Multi-Occupancy Building Solutions

Transcription

1 Multi-Occupancy Building Solutions

2 b Multi-Occupancy building solutions Multi-Occupancy building solutions 2 Saint-Gobain helps improve daily life by creating great places to live. We offer multi-occupancy building solutions that provide comfort and wellbeing for everyone. INTRODUCING Warranted solutions with fully tested performance Multi-Occupancy building solutions - contents Great places to live by Saint-Gobain 3 6 Multi-Occupancy buildings: regulations & requirements 8 14 Multi-Occupancy buildings: design for compliance & comfort Design for compliance Design for comfort Multi-Occupancy buildings: Saint-Gobain solutions 52 86

3 3 Multi-Occupancy building solutions As the world s largest provider of materials and construction technologies, Saint-Gobain creates and delivers innovative, high-performance solutions that can make multi-occupancy buildings great places to live. We can offer a wealth of solutions to enhance multi-occupancy buildings up to 18m such as apartments, student accomodation and hotels. Recognised as one of the world s top 100 most innovative companies, Saint-Gobain has expertise across an exceptional range of materials and technologies, from flat glass and building materials to high-performance polymers and abrasives. For the more than 350 years, Saint-Gobain has pioneered the development of innovative materials that shape the way we live. Our goal is to contribute this rich experience to building a better, more comfortable, more sustainable future. In the UK andireland, some of the best known and respected companies in the construction sector are part of Saint-Gobain including British Gypsum, Celotex, Ecophon, Glassolutions, Isover, PAM, Pasquill, Weber and of course, Saint-Gobain Glass. Together, the brands of Saint-Gobain offer a range of high performance, energy-saving solutions for multi-occupancy buildings, which make great places to live.

4 5 Multi-Occupancy building solutions Multi-Occupancy building solutions 6 The UK s multi-occupancy building sector needs to design with the occupants in mind, but also to meet the appropriate geographic building regulations in terms of thermal, acoustic and fire requirements. This guide aims to assist designers of multi-occupancy buildings with various solution options. These demonstrate how providing excellent levels of insulation to the building fabric, in addition to paying attention to design detailing and improving airtightness, can not only meet the regulation criteria but will ensure that new multi-occupancy buildings are significantly more energy efficient and will remain so over the life of the building. INTRODUCING Warranted solutions with fully tested performance Fabric First Solutions by Saint-Gobain We have a one-time opportunity with the construction of new multi-occupancy buildings to build great places to live. The Fabric First approach to construction, prioritises improvements to a building s fabric and services that will not only increase the energy performance of that building over its whole lifetime, but more importantly, will provide a multi-occupancy building that is more comfortable to live in, improving people s daily life. Fabric First Solutions by Saint-Gobain demonstrate how trusted Saint-Gobain branded products may be combined to offer Steel Frame Walls, Masonry Walls, Timber Frame Walls, Floors and Roofs that are not only a good route to regulation compliance, but will ensure a comfortable multi-occupancy building experience. Closer to Comfort by Saint-Gobain In addition to meeting the demands of Building Regulations with solutions that use a Fabric First approach to building, the specification of Steel Frame Walls, Masonry Walls, Timber Frame Walls, Floors and Roofs can incorporate higher performing Saint-Gobain branded products to provide additional user comfort. Closer to Comfort by Saint-Gobain gives you options to substitute products from the Fabric First Solutions, instead opting for products that will move the building user Closer to Comfort in the areas of Thermal Comfort, Audio Comfort, Visual Comfort, Indoor Air Comfort or Economic Comfort. My Comfort by Saint-Gobain is our campaign promoting the Multi-Comfort building concept which is designed to deliver the ultimate comfort experience for everyone in any type of building. Incorporating Passive House design, it s a way of designing and building sustainable, comfortable and healthy home and working environments. There are five main considerations that affect people s perception of comfort inside buildings: Thermal Audio Visual Indoor Air Economic Determined by air temperature, humidity, draughts, etc. Determined by parameters such as noise from outdoors, vibrations, clarity of hearing, intelligibility of speech, etc. Determined by factors such as view, light quality, luminosity, glare, etc. Determined by indoor air quality parameters such as fresh air supply, pollutants, odours, etc. Determined by the affordability of constructing, running and maintaining the building The correct balance of these factors in the design of new multi-occupancy buildings, gives places that improve comfort, health and wellbeing. Experience more at

5 Multi-Occupancy buildings: regulations & requirements

6 9 Multi-Occupancy building solutions Multi-Occupancy building solutions 10 Multi-Occupancy buildings: regulations & requirements Building Regulations The Building Regulations are a set of minimum standards to which all multi-occupancy projects must adhere. They are designed to ensure that multi-occupancy buildings are built to the correct standards, as laid out in the Building Regulations. The exact regulations differ between England, Wales and Scotland, but all regions have regulations covering the same areas. England & Wales In addition the Building Regulation breakdown shown in Figure 1 below, most multi-occupancy projects are also subject to other statutory requirements including planning permission, fire precautions, water regulations, licensing/registration and the Party Wall Act An energy performance certificate (EPC) is also required. Scotland The Building (Scotland) Act 2003 gives Scottish Ministers the power to make Building Regulations to: Secure the health, safety, welfare and convenience of persons in or about buildings and of others who may be affected by buildings or matters connected with buildings Further the conservation of fuel and power Further the achievement of sustainable development There are two Technical Handbooks, one covering domestic buildings and the other non-domestic buildings. These Technical Handbooks have been issued by Scottish Ministers for the purpose of providing practical guidance with respect to the requirements of the provisions of the Building Regulations under a notice given in accordance with Section 4 (2) of the Building (Scotland) Act Section 0 is identical in both handbooks covering general issues and sets out how and when the regulations apply to buildings and works. You can either use the building control services of your local authority or an approved inspector to demonstrate compliance with the appropriate Building Regulations. Figure 1 Building Regulations Breakdown: England & Wales Technical Parts England & Wales Structural Safety Part A Fire Safety Part B Resistance to Contaminants & Moisture Part C Toxic Substances Part D Resistance to Sound Part E Ventilation Part F Sanitation, Hot Water & Water Efficiency Part G Drainage & Waste Disposal Part H Sections 1 to 7 give guidance on how to achieve the standards set by the regulations. The seven sections each cover a number of related standards, they are: Section 1 Structure Section 2 Fire Section 3 Environment Section 4 Safety Section 5 Noise Section 6 Energy Section 7 Sustainability Heating & Appliances Protection from Falling Conservation of Fuel & Power Access To & Use of Buildings Glazing Safety (Wales only) Electrical Safety Part J Part K Part L Part M Part N Part P

7 11 Multi-Occupancy building solutions Multi-Occupancy building solutions 12 Multi-Occupancy buildings: regulations & requirements Key regulations affecting the building fabric specification of multi-occupancy buildings There are different Building Regulations for the following geographic regions which are the key regulations affecting the building fabric specification of multi-occupancy buildings, which must be adhered to, as follows: England Use Performance parameter Regulation Compliance route Thermal requirement Part L1A Part L2A SAP SBEM Robust Details Dwellings (flats/apartments) Acoustic requirement Part E Pre-Completion Testing Lab Tests Fire requirement Part B (Vol 2) Lab Tests Thermal requirement Part L2A SBEM Robust Details Wales Use Performance parameter Regulation Compliance route Rooms for residential purposes Acoustic requirement Part E Pre-Completion Testing Lab Tests Thermal requirement Part L1A Part L2A SAP SBEM Fire requirement Part B (Vol 2) Lab Tests Robust Details Dwellings (flats/apartments) Acoustic requirement Part E Pre-Completion Testing Lab Tests Fire requirement Part B (Vol 2) Lab Tests Thermal requirement Part L2A SBEM Robust Details Rooms for residential purposes Acoustic requirement Part E Pre-Completion Testing Lab Tests Fire requirement Part B (Vol 2) Lab Tests

8 13 Multi-Occupancy building solutions Multi-Occupancy building solutions 14 Multi-Occupancy building regulations & requirements Scotland Use Regulation Performance parameter Compliance route Thermal requirement Section 6 Domestic Section 6 Non-Domestic SAP SBEM Robust Details Visit Dwellings (flats/apartments) Acoustic requirement Section 5 Domestic Pre-Completion Testing Lab Tests Fire requirement Section 2 Domestic Lab Tests Thermal requirement Section 6 Non-Domestic SBEM Robust Details Multi-Occupancy Building Solutions Multi-Occupancy Building Solutions Rooms for residential purposes Acoustic requirement Section 5 Non-Domestic Pre-Completion Testing Lab Tests Fire requirement Section 2 Non-Domestic Lab Tests New Housing Solutions New Housing Solutions Multi-Occupancy Building Solutions New Housing Solutions Other specification tools to download are: Case Studies Installation Guide Training Course Information Warranty Details Junction Details

9 15 Multi-Occupancy building solutions Multi-Occupancy buildings: design for compliance & comfort

10 17 Multi-Occupancy building solutions Multi-Occupancy building solutions 18 Multi-Occupancy buildings: design for compliance Performance parameter: Thermal requirements England & Wales Approved Document L1A & L2A Conservation of Fuel and Power: In England and Wales when designing multi-occupancy residential buildings, there is a requirement to comply with performance parameters set out in one or both of the following Building Regulation Approved Documents depending on the type of building being designed: Approved Document L1A (AD L1A), Conservation of fuel and power in new dwellings Approved Document L2A (AD L2A), Conservation of fuel and power in new dwellings other than dwellings The aim of AD L in both cases is as follows: To provide reasonable provision for the conservation of fuel and power in buildings by: A. Limiting heat gains and losses: 1. Through thermal elements and other parts of the building fabric and 2. From pipes, ducts and vessels used for space heating, space cooling and hot water B. Provide fixed building services: 1. Are energy efficient 2. Have effective controls and 3. Are commissioned by testing and adjusting as necessary to ensure they use no more fuel and power than is reasonable in the circumstance For the purpose of this document compliance requirements for A. 1 will be detailed. As with other Approved Documents detailed in this guide there are additional design considerations which need to be considered in addition to those detailed which can be found in AD L1A & L2A. (England: (Wales: When a multi-occupancy building containing a dwelling is being constructed, account should be taken of the guidance given in AD L1A. In most instances use AD L1A for guidance relating to the work on individual dwellings and AD L2A for guidance relating to the parts of the building that are not a dwelling such as heated common areas. A dwelling in the context of this guide includes a dwelling-house and a flat, and means a self-contained unit designed to accommodate a single household. For new boarding houses, hostels and student accommodation that contains rooms for residential use AD L2A. Performance requirements Detailed in this section are the limiting or worst acceptable fabric performance values in terms of elemental U-value and air permeability requirements. These are the worst performance requirements permissible, however it is worth noting that it would be extremely difficult to obtain whole building performance compliance using the limiting values alone. Approved Document L1A (England) Limiting Fabric Parameters: Notes: 1. Limiting fabric parameters For the purposes of checking compliance with the limiting fabric values for roof-lights, the true U-vaue based on Roof 0.20 W/(m 2 K) aperture area can be converted to the U-value based on the developed area of the roof-light. Further guidance Wall 0.30 W/(m 2 K) evaluating the U-value of out-of-plane roof-lights is given in Assessment of thermal performance out-of-plane Floor 0.25 W/(m 2 K) rooflights, NARM Technical Document NTD 2(2010). Party Wall 0.20 W/(m 2 K) Windows, roof windows, glazed roof-lights 1, 2.00 W/(m 2 K) curtain walling and pedestrian doors Air permeability 10.00m 3 /(h.m 2 ) at 50 Pa Approved Document L1A (Wales) Limiting Fabric Parameters: Worst acceptable fabric parameters External walls 0.21 W/(m 2 K) Party walls 0.20 W/(m 2 K) Floor 0.18 W/(m 2 K) Roof 0.15 W/(m 2 K) Windows, roof windows, glazed roof-lights, curtain walling 1 and pedestrian doors Air permeability 1. W/(m 2 K) 10.00m 3 /(h.m 2 ) at 50 Pa Approved Document L2A (England) Limiting Fabric Parameters: Limiting fabric parameters Roof 0.25 W/(m 2 K) Wall 0.35 W/(m 2 K) Floor 0.25 W/(m 2 K) Windows, roof windows, roof-lights 1, curtain walling and pedestrian doors 2, W/(m 2 K) High-usage entrance doors 3.50 W/(m 2 K) Air permeability 10.00m 3 /(h.m 3 ) at 50 Pa Approved Document L2A (Wales) Limiting Fabric Parameters: Worst acceptable fabric parameters Roof 0.25 W/(m 2 K) Wall 0.35 W/(m 2 K) Floor 0.25 W/(m 2 K) Windows, roof windows, roof-lights curtain walling and pedestrian doors 1, W/(m 2 K) High-usage entrance doors 3.50 W/(m 2 K) Air permeability 10.00m 3 /(h.m 3 ) at 50 Pa Notes: 1. The limiting value for curtain walling is an area-weighted average for the whole facade. Notes: 1. For the purposes of checking compliance with the limiting fabric values for roof-lights, the true U-value based on aperture area can be converted to the U-value based on the developed area of the roof-light. Further guidance on evaluating the U-value of out-of-plane root-lights is given in Assessment of thermal performance of out-of-plane rooflights, NARM Technical Document NTD 2 (2010). 2. Excluding display windows and similar glazing. There is no limit on design flexibility for these exclusions but their impact on CO 2 emissions must be taken into account in calculations. 3. In buildings with high internal heat gains, a less demanding area-weighted average U-value for the glazing may be an appropriate way of reducing overall CO 2 emissions and hence the BER. If this case can be made, then the average U-value for windows can be relaxed from the values given above. However, values should be no worse than 2.7 W/m 2 K. Notes: 1. Excluding display windows and similar glazing. There is no limit on design flexibility for these exclusions but their impact on primary energy consumption and CO 2 emissions must be taken into account in the Criterion 1 calculations. 2. In buildings with high internal heat gains, a less demanding area weighted average U-value for the glazing may be an appropriate way of reducing overall primary energy consumption CO 2 emissions and hence the BPEC and BER. If this case can be made, then the average U-value for windows can be relaxed from the values given above. However, values should be no worse than 2.7 W/m2K.

11 19 Multi-Occupancy building solutions Multi-Occupancy building solutions 20 Multi-Occupancy buildings: design for compliance Approved Document L1A (England and Wales) Separating Walls: U-values for party walls Party wall construction U-value W/(m 2 K) Solid 0.0 Unfilled cavity with no effective edge sealing* 0.5 Unfilled cavity with effective sealing around all exposed edges and in line with insulation layers in abutting elements A fully filled cavity with effective sealing at all exposed edges and in line with insulation layers in abutting elements For buildings constructed to AD L1A in England and Wales, party wall thermal bypass needs to be considered for which a thermal performance is assigned based on construction in accordance with the table above. * This party wall construction option applies to England only. Compliance methods Approved Document L1A Compliance Criteria: Compliance needs to be demonstrated in the following areas: The CO 2 emissions from the (As-built) Dwelling Emission Rate (DER), must not be greater than the target emission rate (TER) at design stage The kwh/m 2 /yr (As-built) Dwelling Fabric Energy Efficiency (DFEE) rate must not be greater than the Target Fabric Energy Efficiency (TFEE) rate at design stage It is mandatory to meet the Energy Performance Building Directive (EPBD) objectives, unlike the other criterion which are guidance Use of Standard Assessment Procedure (SAP) software and all parameters detailed in AD L to demonstrate dwelling theoretical compliance and generate an Energy Performance Certificate (EPC) Airtightness The figures generated are not set out to give you actual energy use, they are purely design values Approved Document L2A Compliance Criteria: Compliance needs to be demonstrated in the following areas: The Building Emission Rate (BER) in CO 2 must not be greater than the Target CO 2 Emission Rate (TER) TER is expressed as CO 2 emitted per year per m 2 of the total useful floor area It is mandatory to meet the Energy Performance Building Directive (EPBD) objectives From Simplified Building Energy Model (SBEM) or other approved dynamic simulation software (DSM) like IES, TAS HeaCOMP software figures must be used for the creation of Energy Performance Certificates (EPCs) which are required by the occupants and Building Control Officers Airtightness The figures generated are not set out to give you actual energy use, they are purely design values Scotland Section 6 Domestic and Non-Domestic The intention of Section 6 is to ensure that effective measures for the conservation of fuel and power are incorporated into dwellings and buildings consisting of dwellings. In addition to limiting energy demand, by addressing the performance of the building fabric and fixed building services, a carbon dioxide emissions standard obliges a designer of new dwellings to consider building design in a holistic way. Section 6 is split into two documents as follows: Section 6 Fire Domestic Section 6 Fire Non-Domestic Like England and Wales, when considering the design of multi-occupancy buildings containing a dwelling, account should be taken of the guidance given in Section 6 Domestic. In most instances, use Section 6 Domestic for guidance relating to the work on individual dwellings, and Section 6 Non-Domestic for guidance relating to the parts of the building that are not a dwelling such as heated common areas. A dwelling in the context of this guide includes a dwelling-house and a flat and means a self-contained unit designed to accommodate a single household. For new non-domestic buildings such as hotels and hostels use guidance given in the Section 6 Non-Domestic Technical Handbook. The Section 6 Technical Handbook consists of a number of sub-sections which all need consideration when designing to meet compliance: 6.1: Carbon Dioxide Emissions 6.2: Building Insulation Envelope 6.3: Heating Systems 6.4: Insulation of Pipes, Ducts and Vessels 6.5: Artificial and Display Lighting 6.6: Mechanical Ventilation and Air Conditioning 6.7: Commissioning Building Services 6.8: Written Information 6.9: Energy Performance Certificates 6.10: Metering For the purpose of this document compliance requirements in Section 6.2 will be detailed, however all other sections will need to be consider from the technical hand books for Section 6 Energy Domestic and / or, Section 6 Energy Non-Domestic in order to fully comply. These documents can be found via the following links: (Domestic: /th2016domenergy) (Non-Domestic: th2016ndenergy) Approved Document L1A & L2A (England and Wales), Air Tightness Compliance: The approved procedure for airtightness testing is given in the Air Tightness Testing and Measurement Association (ATTMA) publication Measuring air permeability of building envelopes.

12 21 Multi-Occupancy building solutions Multi-Occupancy building solutions 22 Multi-Occupancy buildings: design for compliance Performance requirements Detailed in this section are limiting or worst acceptable fabric performance in terms of U-value by element and the building airtightness requirements. These are the worse thermal performance requirements permissible, however it is worth noting that it would be extremely difficult to obtain whole building performance parameters using the limiting values alone. Section 6 Domestic Elemental Performance: Type of element Section 6 Non-Domestic Element Performance: Column (a) Is an area weighted average U-value recommendation by element. Weighted average U-values allows localised areas of and elements to have a poorer performance provided it is compensated for by the rest of the elements in order to achieve and avarege element U-value no worse than the value defined. Column (b) Details the worst U-value permissible by a localised area of the same building element. Any non-repeating thermal bridge need to be accounted for and have a U-value no worse than the value detailed. Section 6 Domestic and Non-Domestic Airtightness: (a) Area-weighted average U-value (W/m 2 K) for all elements of the same type (b) Individual element U-value (W/m 2 K) Wall Floor Roof Windows, doors and roof-lights Cavity separating wall 0.2 Type of element (a) Area-weighted average U-value (W/m 2 K) for all elements of the same type 1 (b) Individual element U-value (W/m 2 K) Wall Floor Roof Windows, doors, roof windows and roof-lights U-values for party walls Party wall construction U-value W/(m 2 K) Solid 0.0 Unfilled cavity with effective sealing around all exposed edges and in line with insulation layers in abutting elements A fully filled cavity with effective sealing at all exposed edges and in line with insulation layers in abutting elements Buildings regulated under Section 6 Domestic require a minimum performance for separating wall elements of 0.2 W/m 2 K in line with the element descriptions detailed above. Section 6 Non-Domestic does not detail a performance value which needs to be met but states that consideration needs to be given to the separating wall construction make up to introduce measures that limit heat loss arising from air movement within cavities in the separating structure Section 6 Domestic Elemental Performance: No backstop value is set for uncontrolled infiltration, however it is recommended that buildings are designed to achieve a value of 10m 3 /h.m 50Pa or better to allow a balanced approach to managing building heat loss. Where an infiltration rate is not specified by the designer, a value of 15m 3 /h.m 50Pa will be assigned to the proposed dwelling for the purpose of the DER. This would be detrimental to the design and designers would look to achieve a designed uncontrolled infiltration rate of between 5 to 7m 3 /h.m 2. Compliance methods Section 6 Domestic and Non-Domestic Carbon Dioxide Emissions: Standard Assessment Procedure (SAP) is used to calculate the carbon dioxide emissions, for individual dwellings. The Government s Standard Assessment Procedure for Energy Rating of Dwellings (SAP 2012 [ is the calculation tool which forms part of the UK National Calculation Methodology which conforms with Article 3 of Directive 2010/31/EU [ on the Energy Performance of Buildings. It is approved to calculate the energy performance and the carbon dioxide emissions of an individual dwelling. At all stages, the conventions in the SAP document [ should be read in conjunction with the specific guidance given in the clauses detailed in Section 6 Domestic Section 6.1. Designers should be familiar with the SAP methodology and their chosen software tool and be able to explain the input and calculation process in the context of the information submitted as part of the building warranty. For multi-occupancy buildings which contain more than one dwelling (such as a block of flats) the average carbon dioxide emissions for the proposed block (DER) may be compared to the average target CO 2 emissions (TER) for the notional block. In addition to self-contained flats, communal rooms or other areas in blocks of dwelling (which are exclusively associated with the dwellings) should be assessed either by: a. a Simplified Building Energy Model (SBEM) calculation using the methodology and guidance to Standard 6.1 for Section 6 Non-domestic buildings, or b. ensuring that the glazing does not exceed 25% of the total communal floor area of the building; and the U values, thermal bridging, air infiltration values equal or better than those given for the gas notional dwellings (package 1 in the table to clause of Section 6 Domestic). For multi-occupancy buildings which fall into the bracket of non-domestic buildings such as hotels, hostels, care homes, student accommodation. SBEM or other approved modelling tools can be used to access compliance. The Simplified Building Energy Model (SBEM) is a calculation tool which forms part of the UK National Calculation Methodology conforms with Article 3 of Directive 2010/31/EU [ on the Energy Performance of Buildings. It is approved for use in carbon dioxide emissions calculations. SBEM has a basic user interface, isbem, which includes Scottish compliance parameters for use with Section 6 Non-Domestic guidance and is available on the National Calculation Methodology website ( Other tools may be used with the methodology (such as dynamic simulation modelling), particularly where the building is considered to be a complex design. A list of approved calculation tools can be found on the Section 6 software [ Environment/Building/Building-standards/techbooks/sectsixprg] page of the Building Standards Division website. To comply with the requirements of Standard 6.1 Non-Domestic, designers should demonstrate that the calculated carbon dioxide emissions for the actual building (Building Emissions Rate or BER) do not exceed those which are calculated for a notional building (Target Emissions Rate or TER). The carbon dioxide emissions are measured in kilograms of CO 2 per square metre of floor area per annum. Section 6 Energy Domestic and Non-Domestic, Air Tightness Compliance: Testing should be in accordance with BS EN 13829:2001 Thermal performance of buildings determination of air permeability of buildings fan pressurisation method. Practical advice on procedure for pressure testing is given in the ATTMA publication Measuring Air Permeability of Building Envelopes ( Testing should be carried out by persons who can demonstrate relevant, recognised expertise in measuring the air permeability of buildings. This should include membership of a professional organisation which accredits its members as competent to test and confirm the results of testing. Addition information for compliance and suitable site testing programmes can be found in the following: Scottish Technical Handbook Section 6 Domestic Section Scottish Technical Handbook Section 6 Domestic Section

13 23 Multi-Occupancy building solutions Multi-Occupancy building solutions 24 Multi-Occupancy buildings: design for compliance SAP & SBEM for Multi-Occupancy buildings A building s energy consumption and CO 2 emissions must be assessed against the requirements of Part L (in England and Wales) and Section 6 (in Scotland) at design phase and once the building is complete. Building Regulations compliance can be demonstrated by carrying out either a SAP or SBEM assessment on the building. The assessment required depends on whether the building contains individual dwellings (flats/apartments) or rooms for residential purposes and whether there are unconditioned spaces in the building. For dwellings (flats/apartments), where Part L1A applies, a SAP assessment is required. A dwelling (flats/apartments) refers to a self-contained unit designed to accommodate a single household. In multi-occupancy buildings containing dwellings (flats/apartments) with unheated common circulation spaces, a SAP assessment will be sufficient. However where common areas are heated, two assessments will be required, a SAP assessment for each dwelling (flats/apartments) and a SBEM assessment for the common heated areas. For buildings that exclusively contain rooms for residential purposes (e.g. nursing homes or student accommodation etc.) an SBEM assessment is required as the rooms are not considered to be dwellings (flats/apartments) and Part L2A applies. The following sketches show an illustration of how this is applied: Assessment criteria Both SAP and SBEM assessments require compliance with five Criterion to be demonstrated: Criterion SAP Assessments for dwellings (flats/apartments) 1 Dwelling CO 2 Emission Rate (DER) must not be greater than the Target CO 2 Emission Rate (TER). AND Dwelling Fabric Energy Efficiency (DFEE) rate must not be greater than the Target Fabric Energy Efficiency (TFEE) rate Fabric performance (e.g. U-values) and the fixed building services should achieve reasonable levels of energy efficiency. The dwelling should include sufficient passive control measure to avoid overheating during the summer. The performance of the As Built building should be consistent with the DER and DFEE. The necessary provisions for enabling energy-efficient operation of the dwelling should be put in place. SBEM Assessments for heated common areas & rooms for residential purposes Building CO 2 Emission Rate (BER) must not be greater than the Target CO 2 Emission Rate (TER). Fabric performance (e.g. U-values) and the fixed building services should achieve reasonable levels of energy efficiency. The building should include sufficient passive control measure to avoid overheating during the summer. The performance of the As Built building should be consistent with the BER. The necessary provisions for enabling energy-efficient operation of the dwelling should be put in place. Target Emission Rates (and Fabric Energy Efficiency Rates) are calculated during the assessments and represent the performance of a building of the same size, shape, orientation and usage, but with fabric performance and system efficiencies as defined for the National Building in the National Calculation Methodology (NCM). Energy usage is based on national average usage data for the type of building being assessed. As each apartment is self-contained they are considered to be dwellings and SAP assessments are required. The unconditioned circulation space is not assessed. If the same two apartments are accessed via a heated circulation space, two assessments are required. Each apartment is a self-contained unit and SAP assessments are required. In addition to the SAP assessments the circulation space is now conditioned and therefore needs to be assessed using SBEM. For a building which contains rooms for residential purposes, Part L2A applies, as the rooms and associated common areas are all assessed under a single SBEM assessment. When carrying out a SAP assessment on an apartment block it is sometimes difficult to demonstrate compliance, particularly for mid-floor apartments. Therefore it is permitted to calculate an average apartment DER, based on all the ground floor, mid floor and top floor apartments. Assessments & information required Accredited assessors are required to carry out both SAP and SBEM assessments. It is advised that assessors are engaged early in the design process to advise on the best way for concept buildings to achieve compliance, rather than trying to adjust designs or rework designs at a later stage. This will also give the assessor an opportunity to advise where the greatest energy savings can be achieved to inform other elements of the design.

14 25 Multi-Occupancy building solutions Multi-Occupancy building solutions 26 Multi-Occupancy buildings: design for compliance Performance parameter: Acoustic requirements England & Wales Approved Document E Resistance to the passage of sound: Approved Document E came into force in 2003 and was last amended in It details regulatory performance requirements and application advice to restrict the passage of sound between adjoining dwellings (flats/apartments) and within multi-occupancy buildings containing rooms for residential purposes. Approved Document E covers three primary areas: E1 Protection against sound from other parts of the building and adjoining buildings E2 Protection against sound within a dwelling-house etc E3 Reverberation in the common internal parts of buildings containing flats/apartments or rooms for residential purposes E1 Protection against sound from other parts of the building and adjoining buildings E1 states: Dwellings-houses, flats and rooms for residential purpose shall be designed in such a way that they provide reasonable resistance to sound from other parts of the same building and from adjoining buildings Diagram 0.1 detailed in Approved Document E and shown below, list acoustic performance parameters which require consideration. Levels of airborne and/or impact sound insulation performance, need consideration as follows: Diagram 0.1 Requirement E1 Flat or room for residential purposes: Other parts of the same building Performance requirements The minimum acoustic attenuation level required for airborne sound by separating walls and floors, and maximum permissible transmitted impact sound performance provided by separating floors for both flats and rooms for residential purposes are as follows: Table 0.1a Dwelling-houses and flats performance standards for separating walls, separating floors and stairs that have a separating function Purpose built dwelling-houses and flats Table 0.1b Airborne sound insulation sound insulation D n tw + C 2 db (Minimum values) Impact sound insulation L n tw + C 2 db (Minimum values) Walls 45 - Floors and stairs Rooms for residential purposes performance standards for separating walls, separating floors and stairs that have a separating function Purpose built rooms for residential purposes Airborne sould insulation sound insulation D n tw + C 2 db (Minimum values) Impact sound insulation L n tw + C 2 db (Minimum values) Walls 43 - Floors and stairs Compliance methods Separating floor There are two methods by which compliance of separating elements with Approved Document E can be demonstrated: 1. Build to a pre-approved scheme for which the only current example is Robust Details Ltd Any dewlling-house, flat or room for residential purposes to which Requirement E1 applies Separating floor Separating wall Adjoining dwelling-house, flat or room for residential purposes: Other parts of the same building: Adjoining building: Refuse chutes 2. Build deemed to satisfy or bespoke separating elements and test in accordance with guidance detailed in Approved Document E Flat or room for residential purposes Other parts of the same building Key: Impact sound insulation Airborne sound insulation

15 27 Multi-Occupancy building solutions Multi-Occupancy building solutions 28 Multi-Occupancy buildings: design for compliance E2 Protection against sound within a dwelling-house etc E2 states: Dwellings-houses, flats and rooms for residential purpose shall be designed and constructed in such a way that: a) internal walls between a bedroom or a room containing a water closet, and other rooms; and b) internal floors provide reasonable resistance to sound. Diagrams detailed in Approved Document E and shown below list acoustic performance parameters which require consideration. Levels of airborne and/or impact sound insulation performance, needs consideration as follows: Diagram 0.2 Requirement E2(a) Performance requirements When considering sound transmission within a dwelling there is only a requirement to consider minimum acoustic attenuation of partition floors and walls within the dwelling for airborne sound insulation as follows: Laboratory values for new internal walls and floors within dwelling-houses, flats and rooms for residential purposes, whether purpose built or formed by material change of use Airborne sound insulation R w db (Minimum values) Walls 40 Floors 40 Compliance methods Any room to which requirement E2(a) applies Internal wall Bedroom or a room containing a water closet When considering sound within a dwelling E2 applies to all internal separating elements which do not have doors or openings, or separate en suite from the associated bedroom. Onsite compliance and testing of these elements is deemed unsuitable because of the number of potential variables, therefore AD E requires laboratory testing of construction build ups in accordance with BE EN ISO 140-3:1995, and rated in accordance with BS EN ISO 717-1:1997 to determine the weighted sound reduction index, R w. Dwelling-house, flat or room for residential purposes Key: Airborne sound insulation Diagram 0.3 Requirement E2(b) Any room to which requirement E2(b) applies Internal floor Any room to which requirement E2(b) applies Dwelling-house, flat or room for residential purposes Key: Airborne sound insulation

16 29 Multi-Occupancy building solutions Multi-Occupancy building solutions 30 Multi-Occupancy buildings: design for compliance E3 Reverberation in the common internal parts of buildings containing flats or rooms for residential purpose E3 states: the common internal parts of buildings which contain flats or rooms for residential purpose shall be designed in such a way as to prevent more reverberation around common parts than is reasonable Design criteria to create common areas with reasonable reverberation properties required in E3 requires knowledge of common areas and material absorption class in order to design in compliance. Performance requirements Whilst there is no detailed maximum reverberation time required for common areas, there is a requirement to prevent reverberation based on volume and material absorption class. Please refer to Compliance methods below. Compliance methods Section 7 of AD E describes how to determine the amount of additional absorption required in corridors, hallways, stairwells and entrance halls of flats and rooms for residential purposes to control levels of reverberation. Two methods of compliance are detailed: Method A: Cover a specified area with an absorber of an appropriate class that has been rated in accordance with BS EN ISO 11654:1997 Acoustics Sound absorbers for use in buildings Rating of Sound absorbers. Further details of Method A can be seen in Section Method B: Determine the minimum amount of absorptive material required using a calculation procedure in octave bands. This method is intended for applications in corridors, hallways and entrance halls (defined in Section 7, ). The process is detailed in AD E Section 7, and allows design flexibility and use of materials with higher absorption properties. Scotland Section 5: Noise Domestic The purpose of Section 5 Domestic is to limit the transmission of sound between and within dwellings/flats so as not to threaten the health of occupants. Section 5 Domestic considers both airborne and impact sound acoustic parameters as follows: Airborne sound insulation should be provided where any separating wall or separating floor is formed between areas in different occupation. For example: between dwellings between a dwelling and a non-domestic building between a dwelling and other parts of the same building, e.g. common stair or corridor, communal lounge, or car parking garage Impact sound insulation should be provided where any separating floor is formed between areas in different occupation. For example: between dwellings between a dwelling and a non-domestic building with rooms intended to be used for sleeping between a dwelling, and other parts of the same building directly above e.g. common stair or corridor, communal lounge, or car parking garage between a dwelling and a non-domestic building a roof, walkway or access deck located directly above a dwelling and to which there is access Section 5 Domestic also considers noise nuisance and design requirements for the control of noise from services and performance requirements required from internal partition elements within dwellings. Scotland Section 5: Noise Non-Domestic The purpose of Section 5 Non-Domestic is to limit the transmission of sound between and within rooms intended for sleeping so not to threaten the health of occupants. Section 5 Non-Domestic considers both airborne and impact sound acoustic parameters as follows: Airborne sound insulation should be provided where any separating wall or separating floor is formed between areas in different occupation. For example: between rooms that are intended to be used for sleeping and other buildings between rooms that are intended to be used for sleeping and other parts of the same building, such as bedrooms and a communal hall Impact sound insulation should be provided where any separating floor is formed between areas in different occupation. For example: between rooms intended to be used for sleeping. The lower room should be protected from sound emanating from the upper room between rooms intended to be used for sleeping and other parts of the same building. The room below should be protected from sound emanating from other parts of the building above between rooms intended to be used for sleeping and other parts of the same building directly above e.g. common stair or corridor, communal lounge, or car parking garage a roof, walkway or access deck located directly above rooms intended to be used for sleeping and to which there is access

17 31 Multi-Occupancy building solutions Multi-Occupancy building solutions 32 Multi-Occupancy buildings: design for compliance Performance requirements: Separating elements The minimum acoustic attenuation level required for airborne sound by separating walls and floors, and maximum permissible transmitted impact sound performance provided by separating floors for both domestic and non-domestic applications under Section 5 of the Scottish Building Regulations are: Design performance New build and conversions not including traditional buildings Minimum airborne sound insulation 56 D nt,w Maximum impact sound transmission 56 D nt,w The Ctr correction factor is not applied to airborne performance under Scottish Regulations Performance requirements: Internal/Partition elements Internal elements in domestic applications require airborne performance levels as detailed: Domestic design performance Internal walls Intermediate floors Non-Domestic design performance Internal walls Intermediate floors Impact sound is not applicable to internal elements. Performance requirements: Noise From Services Minimum airborne insulation level 40 db R w 43 db R w Minimum airborne insulation level 43 db R w 43 db R w In non-domestic, noise attenuation needs to be designed into service provisions within buildings containing multiple residential units. Common plant, heating, ventilation, air conditioning and other service risers have the potential to provide acoustic flanking pathways within buildings. Section Noise from services, Technical Handbook Domestic Noise offers design considerations in this area. Compliance methods: Domestic separating elements Section 5 Domestic Compliance Methods Separating elements: There are 3 methods available to demonstrate compliance: a) Example details: Example Constructions are available on the BSD website ( b) Other Constructions: It may be necessary, preferable or desirable, to include new or innovative constructions into a proposed design. If this is the case then the following post-completion performance test programme should be applied: At least 1 test should be carried out on each separating wall and separating floor of different construction within the completed buildings, where there is a room intended for sleeping. Testing should be carried out in accordance with BS EN ISO 140-4: 1998 and BS EN ISO 717-1: 1997, for airborne sound transmission and BS EN ISO 140-7: 1998 and BS EN ISO 717-2: 1997, for impact sound transmission. c) Robust Details Scotland: Robust Details Scotland provides a compliance route without the need for pre-completion testing for new build flats. Through a rigorous approvals process, separating details are tested to demonstrate robust compliance to Section 5 and require a minimum of 3dB excess performance over the minimum requirement. When detailing Robust Details in flats care must be taken to ensure separating walls and floors are compatible. Section 5 Non-Domestic Compliance Methods Separating elements: Two methods are available to demonstrate compliance. They are by the use of: a. Example Constructions or b. Other Constructions a) Example Constructions: Example Constructions are available on the BSD website ( b) Other Constructions: It may be necessary, preferable or desirable, to include new or innovative constructions into a proposed design. If this is the case then the following post-completion performance test programme should be applied. Section 5 Domestic and Non-Domestic Compliance Methods Internal/Partition elements: Examples of Generic Internal Constructions available on the BSD website: ( Alternatively, systems and solutions tested in accordance with BS EN ISO 717-1: 1997 and detailed as a single number quantity (weighted) R w value will be acceptable. Section 5 Domestic and Non-Domestic Compliance Methods Noise from Services: Whilst no specific guidance is given in Section 5, additional guidance can be found in the following documents: Limit noise transmission to dwellings from services includes several useful design guide annexes. ( topics/built-environment/building/building-standards). Annex H of BS EN : 2009 provides more detailed guidance on the reduction of service noise transmittance through separating walls and separating floors. Design guides covering low carbon equipment, such as air source heat pumps, contain advice on sound reduction measures and are available at (

18 33 Multi-Occupancy building solutions Multi-Occupancy building solutions 34 Multi-Occupancy buildings: design for compliance Performance parameter: Fire requirements England Approved Document B Volume 1 & 2 Fire Safety: Whether designing dwellings (flats/apartments) or rooms for residential purposes, consideration for fire in all aspects of design is very important. In England, fire safety is covered in Approved Document (AD) B for which there is two volumes: Approved Document B Volume 1 Dwelling-houses Approved Document B Volume 2 Buildings other than dwelling-houses Whilst AD B Vol 1 covers dwelling-houses which includes houses in multiple occupation, for the purpose of this guide AD B Vol 2 is most applicable when considering flats/apartments and rooms for residential purposes and will be the reference when performance requirements are detailed. AD B Vol 2 covers the following areas: B1: Means of warning and escape B2: Internal fire spread (linings) B3: Internal fire spread (structure) B4: External fire spread B5: Access and facilities for the fire service The intention of this guide is to advise on suitable passive products and systems to achieve regulated fire performance in sections B2 and B3 with detail performance requirements of materials, products and structures. Compliance guidance for all other aspect of regulated building design for fire in England and can be found in full in AD B Vol 1 & 2: ( Whilst guidance appropriate to each of these aspects is set out separately in AD B Vol 1 & 2, many of the provisions are closely interlinked. Interaction between these different requirements should be recognized where variations in the standard of provision are being considered. A higher standard under one of the requirements may be of benefit in respect of one or more of the other requirements. The guidance in AD B Vol 1 & 2 as a whole should be considered as a package aimed at achieving an acceptable standard of fire safety. Performance requirements When considering performance of materials, products and structures, AD B Vol 2 Appendix A contains a number of tables detailing performance requirements. Detailed are Tables A1 and A2 which consider a number of factors which have a bearing on fire resistance of materials, products and structures including fire severity, building height and occupancy. Table A8 has also been included to give guidance on typical product fire classifications.

19 35 Multi-Occupancy building solutions Multi-Occupancy building solutions 36 Multi-Occupancy buildings: design for compliance Table A1 Specific provisions of test for fire resistance of elements of structure etc. Part of building Minimum provisions when tested to the relevant part of BS 476 (1) (minutes) Loadbearing Integrity Insulation capacity (2) Minimum provisions when tested to the relevant European standard (minutes) (9) Method of exposure 1. Structural frame, beam or column See Table A2 Not applicable Not applicable R see Table A2 Exposed faces 2. Loadbearing wall Which is not also a wall described in any of the following items) 3. Floors (3) a. Between a shop and a flat above; b. Any other floor including compartment floors 4. Roofs a. Any part forming an escape route; b. Any roof that performs the function of a floor 5. External walls a. Any part less then 1000mm from any point on the relevant boundary; (5) b. Any part 1000mm or more from the relevant boundary; (5) c. Any part adjacent to an external escape route (see Section 5, Diagram 25) 6. Compartment walls Separating a. A flat from any other part of the building (see 8.13) b. Occupancies (see 8.18f) See Table A2 Not applicable Not applicable R see Table A2 or see Table A2 (whichever is greater) or see Table A2 (whichever is greater) or see Table A2 (whichever is greater) REI or see Table A2 (whichever is greater) See Table A2 See Table A2 See Table A2 REI see Table A REI 30 See Table A2 See Table A2 See Table A2 REI see Table A2 See Table A2 See Table A2 See Table A2 REI see Table A2 See Table A2 See Table A No provision (6) (7) or see Table A2 (whichever is less) or see Table A2 (whichever is less) or see Table A2 (whichever is less) RE see Table A2 and REI 15 RE 30 REI or see Table A2 (whichever is less) Each side separately From underside (4) From underside (4) Each side separately From inside the building From inside the building Each side separately Notes: 1. Part 21 for loadbearing elements, Part 22 for non-loadbearing elements, Part 23 for fire-protecting suspended ceilings, and Part 24 for ventilation ducts. BS results are acceptable for items tested before 1 January Applies to loadbearing elements only (see B3.ii and Appendix E). 3. Guidance on increasing the fire resistance of existing timber floors is given in BRE Digest 208 Increasing the fire resistance of existing timber floors (BRE 1988). 4. A suspended ceiling should only be relied on to contribute to the fire resistance of the floor if the ceiling meets the appropriate provisions given in Table A3. 5. The guidance in Section 12 allows such walls to contain areas which need not be fire-resisting (unprotected areas). 6. Unless needed as part of a wall in item 5a or 5b. 7. Except for any limitations on glazed elements given in Table A4. 8. See Table A4 for permitted extent of uninsulated glazed elements. 9. The National classifications do not automatically equate with the equivalent classifications in the European column, therefore cannot typically assume a European class unless they have been tested accordingly. R is the European classification of the resistance to fire performance in respect of loadbearing capacity; E is the European classification of the resistance to fire performance in respect of integrity; and I is the European classification of the resistance to fire performance in respect of insulation. Table A2 Minimum periods of fire resistance Purpose group of building 1. Residential: a. Block of flats not sprinklered sprinklered b. Institutional c. Other residential 2. Shop and commercial: not sprinklered sprinklered (2) 3. Storage and other non-residential: a. Any other building or part not described elsewhere: not sprinklered sprinklered (2) b. Car park for light vehicles: i. open sided car park (3) ii. any other car park 120 Minimum provisions when tested to the relevant part of BS 476 (1) (minutes) Basement storey ($) including floor over Depth (m) of a lowest basement More than 10 (2) Not more than 10 Not applicable Not applicable Not more than 5 Ground or upper storey Height (m) of top floor above ground, in a building or separated part of a building Not more than 18 Not more than 30 More than 30 Single storey buildings are subject to the periods under the heading not more than 5. If they have basements, the basement storeys are subject to the period appropriate to their depth. $ The floor over a basement if there is more than 1 basement, the floor over the topmost basements, the basement storeys are subject to the period appropriate to their depth. * Increased to a minimum of minutes for compartment walls separating buildings. ** Reduced to 30 minutes for any floor within a flat with more than one storey, but not if the floor contributes to the support of the building. # Reduced to minutes for elements not forming part of the structural frame. + Increased to 30 minutes for elements protecting the means of escape. Refer to paragraph 7.9 regarding the acceptability of 30 minutes in flat conversions in Approved Document B Vol 2. Notes: 1. Refer to Table A1 for the specific provisions of test. 2. Sprinklered means that the building is fitted throughout with an automatic sprinkler system in accordance with paragraph The car park should comply with the relevant provisions in the guidance on requirement B3, Section For the purpose of meeting the Building Regulations, the following types of steel elements are deemed to have satisfied the minimum period of fire resistance of 15 minutes when tested to the European test method; i) Beams supporting concrete floors maximum Hp/A=230m-1 operating under full design load. ii) Free standing columns, maximum Hp/A=180m-1 operating under full design load. iii) Wind bracing and struts, maximum Hp/A~210m-1 operating under full design load. Guidance is also available in BS 5950 Structral use of steelwork in building. Part 8 Code of practice for fire resistant design. 30* 30* 30* 30* 30* 30* 15*+ 30* ** ** 15*+ (4) ** ** *+ (4) Not permitted 120** 120# 120# Not permitted 120# Not permitted 120# 120#

20 37 Multi-Occupancy building solutions Multi-Occupancy building solutions 38 Multi-Occupancy buildings: design for compliance Table A8 Typical performance ratings of some generic materials and products Rating Class O (National) Material or product 1. Any non-combustible material or limited combustibility. (Composite products listed in Table A7 must meet test requirements given in Appendix A, paragraph 13(b)). In Approved Document B Volume 2 2. Brickwork, blockwork, concrete and ceramic tiles 3. Plasterboard (painted or not with a PVC facing not more than 0.5mm thick) with or without an air gap or fibrous or cellular insulating material behind 4. Woodwool cement slabs 5. Mineral fibre tiles or sheets with cement or resin binding Wales Approved Document B Volume 1 & 2 Fire Safety: Whether designing flats or rooms for residential purpose consideration for fire in all aspects of design is very important. In Wales, fire safety is covered in Approved Document (AD) B for which there is two volumes: Approved Document B Volume 1 Dwelling-houses Approved Document B Volume 2 Buildings other than dwelling houses Whilst AD B Vol 1 covers dwelling-houses which includes houses in multiple occupation for the purpose of this guide AD B Vol 2 is most applicable when considering flats and rooms for residential purpose and will be the reference when performance requirements are detailed. The provisions set out in AB B Vol 2 covers the following areas: B1: To ensure satisfactory provision of means of giving an alarm of fire and a satisfactory standard of means of escape for persons in the event of fire in a building. B2: To ensure fire spread over the internal linings of buildings is inhibited. B3: To ensure the stability of buildings in the event of fire; to ensure that there is a sufficient degree of fire separation within buildings and between adjoining buildings; to provide automatic fire suppression where necessary; and to inhibit the unseen spread of fire and smoke in concealed spaces in buildings. B4: To ensure external walls and roofs have adequate resistance to the spread of fire over the external envelope, and that spread of fire from one building to another is restricted. B5: To ensure satisfactory access for fire appliances to buildings and the provision of facilities in buildings to assist firefighters in the saving of life of people in and around buildings. The intention of this guide is to advise on suitable passive products and systems to achieve regulated fire performance in sections B2 and B3 with detail performance requirements of materials, products and structures. Compliance guidance for all other aspect of regulated building design for fire in Wales and can be found in full in AB B Vol 1 & 2: ( planning/buildingregs/approved-documents/part-b-fire). Whilst guidance appropriate to each of these aspects is set out separately in AD B Volume 1 & 2, many of the provisions are closely interlinked. Interaction between these different requirements should be recognized where variations in the standard of provision are being considered. A higher standard under one of the requirements may be of benefit in respect of one or more of the other requirements. The guidance in AB B Vol 1 & 2 as a whole should be considered as a package aimed at achieving an acceptable standard of fire safety. Performance requirements When considering performance of materials, products and structures AD B Vol 2 Appendix A contains a number of tables detailing performance requirements in the following areas: A1: Specific provisions of test for fire resistance of elements of structure etc A2: Minimum periods of fire resistance A3: Limitations on fire-protecting suspended ceilings A4: Limitations on the use of uninsulated glazed elements on escape routes A5: Notional designations of roof coverings A6: Use and definition of non-combustible materials A7: Use and definition of materials of limited combustibility A8: Typical performance ratings of some generic materials and products For the purpose of this document Tables A1, A2 and A8 have been detailed because of the requirements which can be met by Saint-Gobain products and systems. Table A1 gives the specific requirements for each element in terms of one or more of the following performance criteria: a. Resistance to collapse (loadbearing capacity), which applies to loadbearing elements only, denoted R in the European classification of the resistance to fire performance b. Resistance to fire penetration (integrity), denoted E in the European classification of the resistance to fire performance c. Resistance to the transfer of excessive heat (insulation), denoted I in the European classification of the resistance to fire performance Table A2 sets out the minimum periods of fire resistance for elements of structure. Table A8 details British and European fire ratings and gives example of typical materials which comply with various categories.

21 39 Multi-Occupancy building solutions Multi-Occupancy building solutions 40 Multi-Occupancy buildings: design for compliance Table A1 Specific provisions of test for fire resistance of elements of structure etc. Table A2 Minimum periods of fire resistance Part of building Minimum provisions when tested to the relevant part of BS 476 (1) (minutes) Loadbearing Integrity Insulation capacity (2) Minimum provisions when tested to the relevant European standard (minutes) (9) Method of exposure Purpose group of building Minimum provisions when tested to the relevant part of BS 476 (1) (minutes) Basement storey ($) including floor over Depth (m) of a lowest basement Ground or upper storey Height (m) of top floor above ground, in a building or separated part of a building 1. Structural frame, beam or column See Table A2 Not applicable Not applicable R see Table A2 Exposed faces More than 10 (2) Not more than 10 Not more than 5 Not more than 18 Not more than 30 More than Loadbearing wall Which is not also a wall described in any of the following items) 3. Roofs a. Any part forming an escape route; b. Any roof that performs the function of a floor 4. External walls See Table A2 Not applicable Not applicable R see Table A2 Each side separately REI 30 See Table A2 See Table A2 See Table A2 REI see Table A2 From underside (4) 1. Residential: a. Block of flats not sprinklered sprinklered b. Institutional c. Other residential 2. Shop and commercial: not sprinklered sprinklered (2) 30* 30* 30* 30* 30* ** ** ** ** Not permitted 120** 120# 120# Not permitted 120# a. Any part less then 1000mm from any point on the relevant boundary; (5) b. Any part 1000mm or more from the relevant boundary; (5) c. Any part adjacent to an external escape route (see Section 5, Diagram 25) 5. Compartment walls Separating a. A flat from any other part of the building (see 8.13) b. Occupancies (see 8.18f) 6. Compartment walls (Other than in item 5) See Table A2 See Table A2 See Table A2 REI see Table A2 Each side separately See Table A2 See Table A2 See Table A2 RE see Table A2 and REI No provision (6) (7) or see Table A2 (whichever is less) or see Table A2 (whichever is less) or see Table A2 (whichever is less) RE 30 REI or see Table A2 (whichever is less) From inside the building From inside the building Each side separately See Table A2 See Table A2 See Table A2 REI see Table A2 Each side separately 7. Cavity barrier Not applicable E 30 and E1 15 Each side separately Notes: 1. Part 21 for loadbearing elements, Part 22 for non-loadbearing elements, Part 23 for fire-protecting suspended ceilings, and Part 24 for ventilation ducts. BS results are acceptable for items tested or assessed before 1 January Applies to loadbearing elements only (see B3.ii and Appendix E, AD B Vol2 Wales). 3. Guidance on increasing the fire resistance of existing timber floors is given in BRE Digest 208 Increasing the fire resistance of existing timber floors (BRE 1988). 3. Storage and other non-residential: a. Any other building or part not described elsewhere: not sprinklered sprinklered (2) b. Car park for light vehicles: i. Open sided car park (3) ii. Any other car park 120 Not applicable Not applicable 30* 15*+ 30* 15*+ (4) *+ (4) Not permitted 120# $ The floor over a basement of if there is more than 1 basement, the floor over the topmost basements, the basement storeys are subject to the period appropriate to their depth. * Increased to a minimum of minutes for compartment walls separating buildings. ** Reduced to 30 minutes for any floor within a flat with more than one storey, but not if the floor contributes to the support of the building. # Reduced to minutes for elements not forming part of the structural frame. + Increased to 30 minutes for elements protecting the means of escape. Refer to paragraph 7.9 regarding the acceptability of 30 minutes in flat conversions in Approved Document B Vol 2. Notes: 1. Refer to Table A1 for the specific provisions of test. 2. Sprinklered means that the building is fitted throughout with an automatic sprinkler system in accordance with paragraph The car park should comply with the relevant provisions in the guidance on requirement B3, Section For the purpose of meeting the Building Regulations, the following types of steel elements are deemed to have satisfied the minimum period of fire resistance of 15 minutes when tested to the European test method; i) Beams supporting concrete floors maximum Hp/A=230m-1 operating under full design load. ii) Free standing columns, maximum Hp/A=180m-1 operating under full design load. iii) Wind bracing and struts, maximum Hp/A~210m-1 operating under full design load. Guidance is also available in BS 5950 Structral use of steelwork in building. Part 8 Code of practice for fire resistant design. 120# 4. A suspended ceiling should only be relied on to contribute to the fire resistance of the floor if the ceiling meets the appropriate provisions given in Table A3, AD B Vol 2 Wales, Appendix A. 5. The guidance in Section 13 allows such walls to contain areas which need not be fire-resisting (unprotected areas). 6. Unless needed as part of a wall in item 5a or 5b. 7. Except for any limitations on glazed elements given in Table A4, AD B Vol 2 Wales, Appendix A. 8. See Table A4, AD B Vol 2 Wales, Appendix A for permitted extent of uninsulated glazed elements. 9. The National classifications do not automatically equate with the equivalent classifications in the European column, therefore products cannot typically assume a European class unless they have been tested accordingly. R is the European classification of the resistance to fire performance in respect of loadbearing capacity; E is the European classification of the resistance to fire performance in respect of integrity; and I is the European classification of the resistance to fire performance in respect of insulation.

22 41 Multi-Occupancy building solutions Multi-Occupancy building solutions 42 Multi-Occupancy buildings: design for compliance Table A8 Typical performance ratings of some generic materials and products Rating Class O (National) Material or product Compliance methods: Fire Resistance 1. Any non-combustible material or limited combustibility. (Composite products listed in Table A7 must meet test requirements given in Appendix A, paragraph 13(b)). In Approved Document B Volume 2 2. Brickwork, blockwork, concrete and ceramic tiles 3. Plasterboard (painted or not with a PVC facing not more than 0.5mm thick) with or without an air gap or fibrous or cellular insulating material behind 4. Woodwool cement slabs 5. Mineral fibre tiles or sheets with cement or resin binding Standards detailing requirements to be met in order to determine fire resistance of various elements of the structure are detailed in AB B Vol 2 Wales, Appendix A, Page , Section 5. Compliance methods: Reaction to fire Standards detailing requirements to be met in order to determine reaction to fire of construction products are detailed in AB B Vol 2 Wales, Appendix A, Page , Section 7. ( Scotland Section 2 Fire: The Scottish regulations are detailed in two volumes under Section 2 of the Building Standards as follows: Section 2 Fire Domestic Section 2 Fire Non-Domestic Both documents contain regulatory compliance requirements relevant to the residential multi-occupancy sector depending on the sub category (flats/apartments and/or rooms intended to be used for sleeping). A full spectrum of regulatory fire requirements are detailed in all aspects of fire design, however for the purpose of this document, fire resistance for common building elements and material reaction to fire will be detailed. A number of additional areas pertaining to fire regulation compliance are detailed in both documents in addition to resistance or reaction to fire of common building elements and materials which need to be considered in any building design. Resistance to Fire Section 2 Fire Non-Domestic, Annex 2.D Resistance to fire, details a table containing minimum fire resistance requirements for building elements as follows: Fire resistance duration for common building elements of components: Construction 1. Structural frame, column or beam 2. Compartment floor, separating floor or a floor, flat roof or access deck protecting routes of escape (see clause 2.0.6) 3. Floor other than a floor in 2 4. Fire shutter in a compartment floor (see clause ) 5. Compartment wall, subcompartment wall, separating wall, or an internal wall or screen used as a protected route of escape (see clause 2.0.6) 6. Loadbearing wall, other than a wall in 5 Fire resistance duration British Standards Loadbearing capacity (mins) British Standards Integrity (mins) British Standards Insulation (mins) European Standards Test exposure Short 30 None None R 30 Faces Medium None None R 30 exposed on the Long 120 None None R 120 inside Short R 30 From the underside Medium REI Long REI 120 Short 30 None None R 30 From the Medium None None R underside Long 120 None None R 120 Short R 30 From the Medium REI underside when fitted Long REI 120 in frame Short 30 (4) (5) R 30 (4,5) Each side separately Medium REI (4) Long REI 120 (4) Short 30 None None R 30 Each side Medium None None R separately Long 120 None None R 120

23 43 Multi-Occupancy building solutions Multi-Occupancy building solutions 44 Multi-Occupancy buildings: design for compliance Construction 7. Fire door in a wall in 5 8. Fire shutter in a compartment wall (see clause ) or in a wall or screen protecting routes of escape (see clause 2.0.6) 9. External short wall more than 1m from a boundary (1,2) 10. External wall not more than 1 m from a boundary (1,2) Fire resistance duration British Standards Loadbearing capacity (mins) British Standards Integrity (mins) British Standards Insulation (mins) European Standards Test exposure Short None 30 (6) None R 30 Each side Medium None (6) None E Sa (8) separately, when fitted in Long None 120 (6,7) None E 120 Sa (6,7) frame (8) Short None (8) EI 30 (8) separately, Each side when fitted in frame (8) Medium None (8) EI (8) Long None (8) EI 120 (8) From the Short 30 (4) 30 None REI 30 (4) inside only REI & Medium (4) 30 I 30 (4) Short 30 (4) REI 30 (4) From the inside only Medium (4) REI (4) 11. Horizontal From the cavity barrier (3) Short None 30 None E 30 underside 12. Vertical cavity barrier (3) Short None 30 None E Ceiling dispensing with a cavity barrier (see clauses 2.4.2b, 2.4.2c, and 2.4.4) 14. Roof against an external wall (see annex 2.A.1) From the underside Short None EI 30 From the underside Medium None EI From the inside Reaction to Fire Risk British Standards European Standards (1) Non-combustible The material is certified non-combustible according to the test specified in BS 476: Part 4: 1970 (1984) throughout; or The material does not flame or cause any rise in temperature on either the centre (specimen) or furnace thermocouples according to the test specified in BS 476: Part 11: 1982 (1988). The material has achieved a classification of A1 when tested in accordance with BS EN ISO: 1182: 2002 and BS EN ISO: 1716: 2002 or The material has achieved a classification of A2-s3, d2 when tested in accordance with BS EN: 13823: 2002 and BS EN ISO: 1182: 2002 or BS EN ISO: 1716: 2002, or Products made from only 1 or more of the materials considered as Class A1 without the need for testing, as defined in Commission Decision 96/3/EC of October 1996 establishing the list of products belonging to Class A1 No contribution to fire provided for in the Decision 94/611/EC implementing Article 20 of the Council Directive 89/106/EEC on the construction products. None of the materials contain more than 1.0% by weight or volume (whichever is the lower) of homogeneously distributed organic material. Additional information: 1. When a classification includes s3, d2 this means that there is no limit set for smoke production and/or flaming droplets/particles.fety. Compliance methods: Resistance to Fire Testing criteria and standards required to demonstrate compliance are detailed in the following section of the Scottish Technical Handbook: Non-Domestic Fire: 2.D.4 British Standards and associated specifications, pages D.5 Harmonised European Standards, pages ( Compliance methods: Reaction to fire Column 2 of the table sets out the performance criteria for reaction to fire, as required by British Standards. The materials or components should be tested to the BS 476 series of test standards which are deemed to satisfy the level of risk set throughout the Scottish Fire Technical Handbooks. The European classification of the reaction to fire of materials and components detailed in column 3 of the table sets out the European performance criteria. Materials or components should be tested to the European Harmonised Tests listed in column 3 of the table which are deemed to satisfy the level of risk set throughout the Scottish Technical Handbook guidance documents for Fire. BS EN : 2007 provides the reaction to fire classification procedure for all construction products and building elements within the scope of the Construction Products Directive. Notes: 1. An external wall includes an external wall used to protect routes of escape (see clause 2.0.6) but excludes an unprotected area calculated in accordance with clauses to 2.6.4, Technical Handbook: Non-Domestic Fire. 2. Any shutter or door in an external wall, which is not included in the calculation of unprotected area, should have the same fire resistance duration and test exposure as the external wall. 3. In a timber or metal stud wall or partition the following will also be deemed to have a short fire resistance duration: a. polythene sleeved mineral wool, or mineral wool slab, in either case under compression when installed, or b. calcium silicate, cement based or gypsum based board at least 12mm thick, or c. steel at least 0.5mm thick, or d. timber at least 38mm thick. 4. If the construction is non loadbearing, none in the case of column 3 and no loadbearing (R) in the case of column None in the case of column 5 and E30 in the case of column 6 for a single openable window not more than 1m 2 in a room in a protected zone as described in clause , Technical Handbook: Non-Domestic Fire. 6. Unless the fire door is in an external wall or a lift door or pressurisation techniques following the guidance in BS EN Part 6: 2005 are used, the fire door should also either: a. in the case of column 4, have smoke seals fitted unless the leakage rate does not exceed 3m3/m/hour, head and jambs only, when tested at 25Pa according to BS 476: Part 31: 1983 (section 31.1) with AMD 8366/ November 1994, or b. in the case of column 6, attain the additional classification of Sa when tested to BS EN Medium fire resistance duration is sufficient for a fire door in the enclosing structure of a fire-fighting shaft (see clause 2.1.9, Technical Handbook: Non-Domestic Fire). 8. None in the case of column 5, and no insulation (I) in the case of column 6, where: a. the width of the fire shutter or the aggregate width of any fire shutters in the wall or part of the wall is not more than one-quarter of the length of the relevant part of the wall, or b. people or vehicle circulation routes are clearly marked and will prevent any fire load adjacent to the shutter (e.g. at stairs, escalators, lifts and corridors).

24 45 Multi-Occupancy building solutions Multi-Occupancy building solutions 46 Multi-Occupancy buildings: design for comfort Design for comfort In addition to designing to meeting the Thermal, Fire and Acoustic regulatory requirements of multi-occupancy buildings, there are additional opportunities to design in additional comfort as suggested below: 3. Choice of structure Typically, masonry multi-occupancy building solutions above 3 or 4 storeys will require metal elements to resist expansion and contraction or for bracing against strong wind forces. Introducing such metal elements will cause greater instances of thermal bridging. 1. Continuous insulation layer Insulating the building envelope, both opaque and glazed, reduces heat loss in Winter and heat gain in Summer by conduction through the envelope. It also reduces the cold wall effect that can be experienced radiating from walls and windows, as well as potential for surface condensation. Insulating the building envelope in a continuous way means that all external walls become warm to the touch, meaning they are more usable in day-to-day life. When framing elements are required this should be considered and where possible the best thermally decoupled solution should be used. 2. Thermal bridging A thermal bridge or cold bridge is an area of the building fabric which has a higher thermal transmission than the adjacent parts of the building fabric, causing a reduction in the overall thermal insulation of the building. Thermal bridging can have a major effect on both the thermal and overall energy performance of the building fabric. Traditionally, when buildings were comparatively poorly insulated, thermal bridging had little impact on the overall thermal performance. However, as buildings become better insulated, the relative importance of thermal bridging multiplies. In very well insulated buildings, the relative effect that thermal bridging can have on the thermal performance of a building can be significant. In addition to diminishing the overall thermal insulation of the building, thermal bridging can also result in: A growth in solar heat gains during the Summer A reduction in internal surface temperatures Cold spots arising within the building A greater risk of surface and interstitial condensation that could result in mould growth A decrease in indoor air quality, due to condensation and mould growth Damage to the building s structure Steel angle bracket holding brickwork up Wall ties Concrete floor SFS system

25 47 Multi-Occupancy building solutions Multi-Occupancy building solutions 48 Multi-Occupancy buildings: design for comfort 4. Air gaps in construction Free or forced air movement within constructions can cause a significant loss of thermal performance. It is very important to understand where and why cavities should exist within construction elements in order for them to work within the overall building design without causing any loss of thermal performance. Consideration is also required when specifying materials to ensure that gaps between components are minimised in order to reduce airflow. Where possible cavities within constructions should be outside the thermal envelope and spaces should be minimised by specifying materials which are suitable for the application. 5. Airtightness & ventilation In order to control the indoor thermal environment, we need to manage the air exchanges with the outdoor environment. We do this by creating an airtight envelope and ventilating it properly. Natural or mechanical ventilation will influence the evacuation of heat during Summer or the need for heating during Winter. Air-currents caused by infiltration or by ventilation systems may also alter the perception of heat in a space. (a) (b) (c) (d) (e) (f) (g) To improve the airtightness of the house, using parge coat type products such as Gyproc SoundCoat Plus, then consideration needs to be given to the design details for the first floor junction. In addition, the sequencing needs to be considered at design stage for the staircase is the parge coat installed before the staircase or is the staircase designed to become part of the airtightness barrier? In either case the joists should no longer be built into the inner leaf as this will then penetrate and make it extremely difficult to achieve increased airtightness. Instead it is recommended that they should be either on pattresses or joist hangers. (h) (i) (j) (k) (l) (j) Common air flow patterns within insulated and un-insulated cavities: (a) air leakage through gaps (b) infiltration of internal air by natural convection (c) diffuse air leakage (d) infiltration of external air by natural or forced (wind) convection (e) wind washing at a corner/edge (f) ventilation or venting (g) air rotation by natural convection within insulation (h) air rotation by natural convection in an uninsulated cavity (i) air rotation by natural convection around insulation (j) air rotation by natural convection through insulation (k) infiltration of external air by natural or forced (wind) convection through insulation (l) mixed pattern (m) air rotation by natural convection between two regions (Source: Siddal, M Green Building Magazine, Vol 19 No 1, The Impact of Thermal Bypass ) Choosing the right product for the correct application is also very important. For example, if fitting insulation within stud work it can be more difficult to cut and fit rigid insulation and gain good contact between the insulation and the structure. It can be easier to install a flexible insulation into this scenario. Both types of material will, if fitted correctly, reduce airflow through and within the studwork cavity compared to an empty cavity. This increases the thermal properties of the element and also enhances the acoustic performance by filling possible acoustic flanking paths and restricting airflow where unwanted sound can travel. However, in both scenarios when using rigid insulation board, consideration needs to be given to the control of any potential moisture issues. Using flexible insulation needs to be in conjunction with a suitable vapour control and airtightness membrane in order to control airflow and enhance airtightness. In the case of framed external walls, it is a common design detail for the services to be located within the insulation layer. This can sometimes cause the pipework to freeze as the position of the pipework is too close to the external leaf. In addition, this makes it difficult to get to the electrical services in the future for upgrades. It is therefore recommended that that a service void is created before the finishing layer to accommodate all services. This also makes it easier to seal all service junctions, ensuring the airtightness.

26 49 Multi-Occupancy building solutions Multi-Occupancy building solutions 50 Multi-Occupancy buildings: design for comfort 6. Heat gains from services A significant challenge with multi-occupancy buildings is the need to limit heat gains from services and also between different heated spaces. If heat transfer between occupied apartments is not controlled then internal temperature gains across the building can make certain spaces uncomfortable. If this is not controlled a typical situation could occur where external and top floor apartments could lose more heat energy than the centrally located apartments, and the centrally located apartments may not lose enough heat and could therefore overheat. Another primary consideration is the route of any incoming and communal services (e.g. communal heating/hot water systems). These are often located in communal zones, and so, can increase the internal temperature of these zones leading to overheating. By using localised small electricity or gas boilers, with renewable solutions, this can be avoided. 8. Audio comfort in Multi-Occupancy buildings It is very important for occupant comfort to ensure a high degree of acoustic isolation between adjoining apartments, and between apartments and common areas. Design consideration is needed for (a) the control of airborne and (b) the control of impact sound. Thought also has to be given to transmission paths: either directly through a separating element or flanking around the element of a building. Designing separating constructions which have higher levels of acoustic isolation will provide occupants with an improved audio environment. Examples of enhanced acoustic design: Cast iron drainage systems are the quietest on the market fully supported by testing in accordance with BS EN 14366:2004. The Ensign system installed with ductile iron fixing brackets incorporating an acoustic dampener has been tested to be more than 10dB quieter than HDPE Silent and greater than 6dB quieter than twin wall PVC. Using Isover Ultimate Cavity Barriers within the external building fabric not only offers a high-performance fire barrier but also minimises airborne sound flanking around separating elements within construction cavities. Using plasterboard linings specifically designed to deliver enhanced acoustic performance can significantly improve audio comfort for occupants. 7. Moisture transfer The control of moisture in apartments must also be considered to ensure good thermal performance. Moisture build up from occupants can be controlled through a good ventilation strategy, but it is also worthwhile to consider solutions that can control moisture migration into the building fabric. Over time, moisture can degrades thermal performance, so applying a parge coat to masonry building fabrics, or using a barrier with framed fabric systems can help prevent such moisture migration. With steel framed solutions it is essential to wrap the frame in insulation to reduce the potential of moisture formation on the cold framing elements. Moisture formation can degrade thermal performance and reduce the longevity of structural omponents. Weather penetration also needs to be controlled for by including a weather-tight layer to prevent a reduction in thermal performance. Weather protection layer Wind proof layer Taped OSB Continuous Insulation Service void Continuous air tight layer Using Isover RD Party Wall Roll, a full fill mineral wool product within masonry cavity separating walls absorbs sound as it passes through the cavity. It also restricts air movement helping to control heat loss too. Using products such as Weber.floor 4955 db mat in conjunction with beam and block floors after the insulation but prior to the screed finish can significantly reduce impact sound.

27 51 Multi-Occupancy building solutions Multi-Occupancy buildings: Saint-Gobain solutions

28 53 Multi-Occupancy building solutions Multi-Occupancy buildings: Saint-Gobain solutions Together, the brands of Saint-Gobain offer a range of high performance energy-saving solutions for multi-occupancy buildings, which make great places to live, improving daily life. The solutions from Saint-Gobain are presented in two ways: Fabric First Solutions by Saint-Gobain We have a one-time opportunity with the construction of new multi-occupancy buildings to build great places to live. The Fabric First approach to construction, prioritises improvements to a building s fabric and services that will not only increase the energy performance of that building over its whole lifetime, but more importantly, will provide a multi-occupancy building that is more comfortable to live in, improving people s daily life. Fabric First Solutions by Saint-Gobain demonstrate how trusted Saint-Gobain branded products may be combined to offer Steel Frame Walls, Masonry Walls, Timber Frame Walls, Floors and Roofs that are not only a good route to regulation compliance, but will ensure a comfortable multi-occupancy building experience. INTRODUCING Warranted solutions with fully tested performance Multi-Occupancy buildings: Saint-Gobain solutions in this section External Steel Frame Walls 55 Closer to Comfort by Saint-Gobain In addition to meeting the demands of Building Regulations with solutions that use a Fabric First approach to building, the specification of Steel Frame Walls, Masonry Walls, Timber Frame Walls, Floors and Roofs can incorporate higher performing Saint-Gobain branded products to provide additional, improved comfort for users. Closer to Comfort by Saint-Gobain gives you options to substitute products from the Fabric First Solutions, instead opting for products that will move the building user Closer to Comfort in the areas of Thermal Comfort, Audio Comfort, Visual Comfort, Indoor Air Comfort or Economic Comfort. External Masonry Walls External Timber Frame Walls Roofs Communal Areas Floors Glazing solutions Soil drainage solutions 84 Contact details 85

29 55 Multi-Occupancy building solutions Multi-Occupancy building solutions 56 INTRODUCING Warranted solutions with fully tested performance Rainscreen See page 57 Choice of finishes Your choice of facades Direct Applied Insulated Render from Weber See page 58 Masonry See page 57 Rail Applied Insulated Render from Weber See page 58 Saint-Gobain Frame System SGFS * year structural warranty applies when Hadley Steel Framing is used with any combination of products from the Saint-Gobain range, tested as either Saint-Gobain Framing System SGFS or Saint-Gobain Infill System SGIS ** 12 year Saint-Gobain product performance warranty covers any combination of products from the Saint-Gobain range, tested as either Saint-Gobain Framing System SGFS or Saint-Gobain Infill System SGIS Saint-Gobain Frame System SGFS is a warranted, pre-panelised structural steel frame system, ideal for medium rise, multi-occupancy residential buildings. SGFS provides complete loadbearing external and internal wall panels, comprising lightweight Hadley Steel Framing sections, which can be ready enveloped in market-leading products from the innovative brands of Saint-Gobain giving a total warranted through the wall solution. Flat Roof See page 68 Cold Roof See page 68 Roof options Your choice of roof options Warm Roof Insulated underside See page 70 Warm Roof Insulated over See page 70 Loadbearing panels together, delivered and fixed into place with concrete or pre-panelised steel joist floors providing the complete superstructure Open Panel Saint-Gobain Infill System SGIS Flexibility To suit your design through bespoke solutions Saint-Gobain Infill System SGIS provides a secondary structure to be fixed on-site to the primary super-structure of medium rise, multi-occupancy residential buildings. SGIS uses Hadley Steel Framing cold-rolled sections fixed to the primary frame providing secondary support for Saint-Gobain insulation and external wall finishes giving total warranted through the wall performance. Closed Panel Loadbearing panels bolted together with insulation and external sheathing board ready-assembled, creating a weather-tight shell in less time Certainty Assessed by the Steel Construction Institute Training 1 day Contractor training courses Efficiency Complete loadbearing solutions for rapid construction with less waste Buildability 26 thought-through design interfaces, with certified SAP details Support One partner from design through construction to completion

30 57 Multi-Occupancy building solutions Multi-Occupancy building solutions 58 External Steel Frame Walls Masonry Minimum 100mm Masonry external façade (Brick, Block or Masonry), over a 50mm low emissive cavity 80mm Celotex FR mm Isover Acoustic Partition Roll (APR 1200) Between Studs = 0.16W/m 2 K 50mm Celotex FR mm Isover Acoustic Partition Roll (APR 1200) Between Studs = 0.20W/m 2 K 50mm Celotex FR mm Isover Acoustic Partition Roll (APR 1200) Between Studs = 0.25W/m 2 K 100mm Hadley Steel Framing Studs 1.2mm gauge with sheathing board to meet fire requirement. External Finish Insulation Options Steel Frame Rainscreen Rainscreen facade on a suitable carrier system over a well ventilated 50mm cavity 170mm Celotex FR5000 ( + 80mm) + 100mm Isover Acoustic Partition Roll (APR 1200) Between Studs = 0.16W/m 2 K 110mm Celotex FR5000 (50 + mm) + 100mm Isover Acoustic Partition Roll (APR 1200) Between Studs = 0.20W/m 2 K mm Celotex FR mm Isover Acoustic Partition Roll (APR 1200) Between Studs = 0.27W/m 2 K 100mm Hadley Steel Framing Studs 1.2mm gauge with sheathing board to meet fire requirement. Masonry Direct Applied Insulated Render Rail Applied Insulated Render Weber.therm XM EWI System External Finish Weber.therm FT EWI System 140mm weber.therm EPS + 100mm Isover Acoustic Partition Roll (APR 1200) Between Studs = 0.16W/m 2 K mm weber.therm EPS + 100mm Isover Acoustic Partition Roll (APR 1200) Between Studs = 0.20W/m 2 K 50mm weber.therm EPS + 100mm Isover Acoustic Partition Roll (APR 1200) Between Studs = 0.27W/m 2 K 100mm Hadley Steel Framing Studs 1.2mm gauge with sheathing board to meet requirements. Insulation Options Steel Frame 130mm weber.therm EPS + 100mm Isover Acoustic Partition Roll (APR 1200) Between Studs = 0.16W/m 2 K mm weber.therm EPS + 100mm Isover Acoustic Partition Roll (APR 1200) Between Studs = 0.20W/m 2 K 100mm Hadley Steel Framing Studs 1.2mm gauge with sheathing board to meet requirements. Direct Applied Insulated Render Suitable vapour control layer: Isover VARIO KM Duplex/ Isover VARIO XtraSafe/ British Gypsum Duplex Board Internal Board Finish: 2 x mm Gyproc FireLine Internal Finish Suitable vapour control layer: Isover VARIO KM Duplex/ Isover VARIO XtraSafe/ British Gypsum Duplex Board Internal Board Finish: 2 x mm Gyproc FireLine Rainscreen Suitable vapour control layer: Isover VARIO KM Duplex/ Isover VARIO XtraSafe/ British Gypsum Duplex Board Internal Board Finish: 2 x mm Gyproc FireLine Internal Finish Suitable vapour control layer: Isover VARIO KM Duplex/ Isover VARIO XtraSafe/ British Gypsum Duplex Board Internal Board Finish: 2 x mm Gyproc FireLine Rail Applied Insulated Render N.B. The thermal bridging associated with masonry tie systems and rainscreen helping hand brackets vary. U-value calculations should be carried out on a case by case basis.

31 59 Multi-Occupancy building solutions Multi-Occupancy building solutions Options to get you Closer to Comfort Using Gyproc Habito, provides enhanced impact resistance and for the first time, fixing capability Adding a final layer internal layer of Gyproc Habito means that walls are reassuringly solid and dependably strong A high strength engineered board core provides enhanced levels of strength, durability and flexibility Hang up to 15kg on a single number 10 screw Simply screw directly into the wall surface, making DIY easy, giving homeowners freedom to have their home just the way they want it Thistle Magnetic Plaster contains properties to attract magnets Turn any wall in any room into an inspiring interactive gallery or notice board that can be changed as often as you like, no fuss, no mess Brings rooms to life by adding an inspiring, interactive, design feature Provides a smooth, inert, high-quality surface which attracts magnets and a durable base for the application of decorative finishes A minimum thickness of 3mm is required to enable magnetic attraction Thistle PureFinish contains ACTIVair technology Our specialist technology that removes formaldehyde from the air to improve indoor air quality and therefore Indoor Air Comfort A gypsum finish plaster for use on a wide range of backgrounds. It provides a smooth, inert, high quality surface to internal walls and ceilings Creates healthier living spaces Finishing the wall with two coats of Thistle Plasters and sealing non-plastered areas of the building envelope with Isover VARIO XtraSafe Membrane will improve airtightness Improving Thermal Comfort reduces draughts and heat loss. Airtightness can be further improved if Isover VARIO XtraSafe Membrane is used throughout the entire building envelope offering even greater Thermal Comfort Provides the desired decorative finish whilst also enabling efficient heat transfer between the air and the fabric of the building Thistle two-coat plasters are highly durable and resistant to damage, reducing whole life costs and potentially extending maintenance cycles Fully-filling the cavity fully with Isover Acoustic Partition Roll (APR 1200) can improve both acoustic comfort and thermal comfort Filling the cavity fully with Isover Acoustic Partition Roll (APR 1200), rather than just a partial fill within the cavity of the steel-frame external wall will absorb sound as it passes through the cavity. It also restricts air movement helping to control heat loss A glass mineral wool roll providing high levels of acoustic insulation in partitions, walls and floors to meet acoustic requirements in domestic and non-residential applications. The rolls push-fit between 0mm stud centres making it easy to install

32 61 Multi-Occupancy building solutions Multi-Occupancy building solutions 62 External Masonry Walls Medium Dense Blockwork Aircrete Blockwork Options to get you Closer to Comfort Medium dense aggregate block manufactured to BS EN (0.40 W/ mk typically 7.3N/mm 2 )* Finished with Weber Monocouche Render (or brickwork) 150mm Isover CWS mm Gyproc ThermaLine Plus = 0.17 W/m 2 K ( thermal ties) 150mm Isover CWS34 = 0.21 W/m 2 K (Stainless Steel Ties) 125mm Isover CWS34 = 0.23 W/m 2 K (Thermal Ties) 100mm Isover CWS34 = 0.26W/m 2 K (Stainless Steel Ties) Min 50mm cavity 100mm Celotex CG5000 = 0.17 W/m 2 K (Thermal ties) 75mm Celotex CG5000 = 0.21 W/m 2 K (Thermal ties) 50mm Celotex CG5000 = 0.28 W/m 2 K (Stainless steel ties) Medium dense aggregate block manufactured to BS EN (0.40 W/mK typically 7.3N/mm 2 ) DryLyner BASIC wall lining incorporating 12.5mm Gyproc WallBoard and Gyproc DriWall Adhesive dabs Finished with Thistle MultiFinish or Thistle BoardFinish Outerleaf Fully-filled cavity options Partial-filled cavity options Inner Leaf Internal Finish Medium dense aggregate block manufactured to BS EN (0.40 W/mK typically 7.3N/mm 2 )* Finished with Weber Monocouche Render (or brickwork) 150mm Isover CWS34 = 0.17 W/m 2 K (Thermal ties) 125mm Isover CWS34 = 0.21 W/m 2 K (Thermal ties) 125mm Isover CWS34 = 0.21 W/m 2 K (Stainless steel ties) 75mm Isover CWS34 = 0.28 W/m 2 K (Stainless steel ties) Min 50mm cavity 100mm Celotex CG5000 = W/m 2 K (Stainless steel ties) 85mm Celotex CG5000 = 0.17 W/m 2 K (Thermal ties) 50mm Celotex CG5000 = 0.25 W/m 2 K (Stainless steel ties) Aircrete block manufactured to BS EN (0.11 W/mK) DryLyner BASIC wall lining incorporating 12.5mm Gyproc WallBoard and Gyproc DriWall Adhesive dabs Finished with Thistle MultiFinish or Thistle BoardFinish N.B. U-values are based on standard stainless steel wall ties unless stated otherwise. Alternative ties (e.g. basalt resin ties) can improve the thermal conductivity. *Ensure the correct compressive strength block is used for the construction required. Fully-filled cavity Partial-filled cavity Apply Gyproc SoundCoat Plus to the block work prior to the plasterboard to improve airtightness Reduces the amount of noise permeating through the walls improving Audio Comfort Less external pollutants permeate the building improving Indoor Air Comfort Using Gyproc Habito, provides enhanced impact resistance and for the first time, fixing capability Reduces draughts and heat loss offering greater Thermal Comfort with a constant internal temperature Replacing standard plasterboard from the Fabric First specification with Gyproc Habito means that walls are reassuringly solid and dependably strong Thistle Magnetic Plaster contains properties to attract magnets Turn any wall in any room into an inspiring interactive gallery or notice board that can be changed as often as you like, no fuss, no mess Our specialist technology that removes formaldehyde from the air to improve indoor air quality and therefore Indoor Air Comfort A parge coat for increased airtightness to optimise sound and thermal performance Formulated to enable application onto aircrete blocks, as well as aggregate Gyproc SoundCoat Plus is now part of nine Robust Detail Masonry wall specifications A high strength engineered board core provides enhanced levels of strength, durability and flexibility Hang up to 15kg on a single number 10 screw Simply screw directly into the wall surface, making DIY easy, giving homeowners freedom to have their home just the way they want it Brings rooms to life by adding an inspiring, interactive, design feature Provides a smooth, inert, high-quality surface which attracts magnets and a durable base for the application of decorative finishes A minimum thickness of 3mm is required to enable magnetic attraction Thistle PureFinish contains ACTIVair technology A gypsum finish plaster for use on a wide range of backgrounds. It provides a smooth, inert, high quality surface to internal walls and ceilings Creates healthier living spaces

33 Multi-Occupancy building solutions 64 External Masonry Walls Options to get you Closer to Comfort Using Celotex CF5000 full-fill cavity insulation in the construction optimises performance through the wall Achieving a lower U-value without widening the cavity, enables a higher internal surface temperature, and gives greater Thermal Comfort Thermal conductivity of W/mK offering enhanced thermal performance and better U-values Achieves an A+ rating when compared to the BRE Green Guide Class O fire performance Finishing the wall with Celotex GD5000 high performance plasterboard thermal laminate will improve the U-value performance This could help to future-proof the home in terms of future energy performance and offers greater Thermal Comfort Suitable for achieving thinner solutions in plaster dab bonded and direct mechanically fixed dry-lining applications Thermal conductivity of W/mK offering enhanced thermal performance and better U-values Broad range of thicknesses delivering reliable long term energy savings Finishing the wall with two coats of Thistle Plasters and sealing non-plastered areas of the building envelope with Isover VARIO XtraSafe Membrane will improve airtightness Improving Thermal Comfort reduces draughts and heat loss. Airtightness can be further improved if Isover VARIO XtraSafe Membrane is used throughout the entire building envelope offering even greater Thermal Comfort Provides the desired decorative finish whilst also enabling efficient heat transfer between the air and the fabric of the building Thistle two-coat plasters are highly durable and resistant to damage, reducing whole life costs and potentially extending maintenance cycles Gyproc SoundCoat Plus A parge coat for increased airtightness to optimise sound and thermal performance Parging of masonry walls, prior to drylining, is a commonly used method of improving the thermal and acoustic performance by minimising air leakage through cracks, unfilled joints and block porosity. Buildings that are well constructed, with a good standard of airtightness, will benefit from improved energy and acoustic performance, lower heating costs and greater comfort for its occupants. Rendering the external façade of the block work solution with weber.pral M provides improved airtightness This can reduce wind washing and external air migration into the fabric giving greater Thermal Comfort Different textured finishes in a variety of colours enhances aesthetics and therefore gives greater Visual Comfort One-coat for fast application Through-colour for low maintenance Weather resistant Suitable for most block types A+ Green Guide rating BBA approved british-gypsum.com

34 65 Multi-Occupancy building solutions External Timber Frame Walls Timber Frame (mm stud) Brick Outer Leaf (Fixed to timber frame with Staifix-Thor Helical Timber Tie, TIM6 BS by Ancon or similar wall tie) 50mm Low-E Cavity Celotex FR5000 Standard breather membrane 1 layer of minimum 9mm OSB (joints taped) mm x 38mm Timber Stud with Isover Timber Frame Batt Insulation between the studs Isover VARIO membrane* 25mm batten/service void** mm Celotex FR mm Isover Timber Frame Batt 032 = 0.17 W/m 2 K 50mm Celotex FR mm Isover Timber Frame Batt 032 = 0.22 W/m 2 K 25mm Celotex TB mm Isover Timber Frame Batt 043 = 0.26 W/m 2 K 15mm Gyproc FireLine or 15mm Gyproc SoundBloc, finished with Thistle MultiFinish or Thistle BoardFinish Outer leaf Cavity options Internal Finish Timber Frame (140mm stud) Brick Outer Leaf (Fixed to timber frame with Staifix-Thor Helical Timber Tie, TIM6 BS by Ancon or similar wall tie) 50mm Low-E Cavity Celotex FR5000 Standard breather membrane 1 layer of minimum 9mm OSB (joints taped) 140mm x 38mm Timber Stud with Isover Timber Frame Batt Insulation between the studs Isover VARIO membrane* 25mm batten/service void** 50mm Celotex FR mm Isover Timber Frame Batt 043 = 0.17 W/m 2 K 25mm Celotex TB mm Isover Timber Frame Batt 043 = 0.20 W/m 2 K 140mm Isover Timber Frame Batt Standard breather membrane = 0.27 W/m 2 K 15mm Gyproc FireLine and 3mm Thistle MultiFnish Timber Frame (mm stud) The Vario complete system Air tightness and moisture management protection * It should be noted that the use of Isover VARIO should only occur in certain areas of the UK if interstitial condensation is to be limited. The WUFI moisture analysis shows that various regions have differing vapor diffusions characteristics. Vapour diffusions is the process by which water vapor spreads or moves through permeable materials caused by a difference in water vapor pressure (RH of air). ** Service void can be removed and services installed within insulation, but it should be noted that electrical cabling should be replaced after 25 years in accordance with the IEEE regulations. It should also be noted that any pipework included within the insulation layer could result in the pipework freezing if incorrectly located, and reduces the overall performance of the thermal envelope at the service positioning. Timber Frame (140mm stud)

35 67 Multi-Occupancy building solutions Multi-Occupancy building solutions 68 External Timber Frame Walls Roofs Options to get you Closer to Comfort Flat Roof Cold Roof Rigidur H provides increased rigidity and durability Rigidur H can be used in partition and ceiling systems to give increased rigidity and durability, with excellent acoustic performance, fire resistance and tolerance to moisture. Designed for timber or steel frame and pre-fabricated applications, Rigidur H characteristics are particularly suited to off-site manufacturing, where strength and durability of factory-made panels are of high importance Using Gyproc Habito, provides enhanced impact resistance and for the first time, fixing capability Replacing standard plasterboard with Gyproc Habito means that walls are reassuringly solid and dependably strong High impact resistant gypsum fibre board Gives high levels of sound insulation, Class A2 and Class O reaction to fire performance and excellent fixing strength The mechanical strength of Rigidur H makes it approved for use in racking-resistant applications in timber frame construction according to the German Institute for Construction Technology in Berlin A high strength engineered board core provides enhanced levels of strength, durability and flexibility Hang up to 15kg on a single number 10 screw Simply screw directly into the wall surface, making DIY easy, giving homeowners freedom to have their home just the way they want it EDPM Membrane (or similar) adhered to 240mm Celotex Crown-Bond (140mm + 100mm) = 0.09 W/m 2 K 200mm Celotex Crown-Bond (100mm + 100mm) = 0.11 W/m 2 K 140mm Celotex Crown-Bond = 0.15 W/m 2 K Vapour Control layer to BS 6229: 2003 on 18mm Marine quality ply on Firrings cut to 1: falls on Pasquill Posi Joist/I-joists or standard timbers (size dependent on spanning) 50mm Isover Acoustic Partition Roll (APR 1200) between joists Finished with 15mm Gyproc WallBoard and Thistle MultiFinish or Gyproc Jointing Compounds External Finish Insulation Options Structure Underside Tiles on 25mm Battens on 25mm counter battens on external quality breather membrane on 100mm Isover Spacesaver plus between joists + 350mm SpaceSaver plus cross-laid = 0.09 W/m 2 K 100mm Isover Spacesaver Between Joists + 250mm SpaceSaver cross-laid = 0.12 W/m 2 K 100mm Isover Spacesaver Between Joists + 200mm SpaceSaver cross-laid = 0.14 W/m 2 K Isover VARIO membrane installed to underside of truss to create airtightness of the fabric Minimum 25mm batten/ service void* Finished with 12.5mm Gyproc WallBoard and Thistle MultiFinish or Gyproc Jointing Compounds Flat Roof Cold Roof To improve the thermal performance I-Joists can be used Reduced thermal bridging will provide a more even distribution of temperature on the internal wall face improving Thermal Comfort I-joists are extensively used for floors but also ideally suited for wall studs Available in depths up to 450mm allows designers to insulate to unprecedented levels Dimensionally stable * Larger void maybe required if recessed lighting is adopted. Isover VARIO XtraSafe Membrane is an innovative membrane system designed to manage moisture within the timber frame The innovative Isover VARIO XtraSafe Membrane intelligently reacts to enhance airtightness whilst protecting the timber structure against dynamic moisture movement, improving Indoor Air Comfort Improves airtightness, reduces draughts and heat loss, improving Thermal Comfort Greatest protection from moisture build up and damage Unique fleece backing, and accompanying applicator tape for quick, effortless installation, and easy repositioning to minimise wastage

36 69 Flat is back Multi-Occupancy building solutions Multi-Occupancy building solutions Warm Roof (Insulated over) Warm Roof (Insulated underside) Tiles on 25mm Battens on 25mm counter battens on external quality breather membrane on Pasquill panelised system with Posi-Joist / I-Joist / Timber Stud 280mm Isover Timber Frame Batt 32 between the rafters with the underside lined in 93mm Gyproc ThermaLine PIR = 0.09 W/m2K Stuart Digital Team Clever solutions on-site. Helpful tools online. Our new flat roofing solutions meet the standards of integrity and performance you ve been demanding. And you can do your U-value calculations on our website. Thanks to Stuart and our digital team, you can find a whole host of handy tools and helpful stuff online. Plus, like all Celotex products, they come with personal support and aftercare. #flatisback celotex.co.uk Flat Roofing by Celotex External Finish Tiles on 25mm Battens on 25mm counter battens on external quality breather membrane on Insulation Options 150mm Celotex FR mm Isover Timber Frame Batt 35 = 0.09 W/m2K 75mm Celotex FR mm Isover Timber Frame Batt 35 = 0.12 W/m2K 200mm Isover Timber Frame Batt 35 between the rafters with the underside lined in 93mm Gyproc ThermaLine PIR = 0.12 W/m2K 200mm Isover Timber Frame Batt 35 between the rafters with the underside lined in 53mm Gyproc ThermaLine PIR = 0.15 W/m2K 75mm Celotex FR mm Isover Timber Frame Batt 35 = 0.15 W/m2K Finish underside of truss with Isover VARIO XrtaSafe breather Membrane 12.5mm Gyproc WallBoard finished with Thistle MultiFinish or BoardFinish Structure 140mm Isover Timber Frame Batt 32 between the rafters with the underside lined in 78mm Gyproc ThermaLine PIR = 0.15 W/m2K Finish underside of truss with SD50 Membrane (polythene 1200 gauge) to EN 13984:2013 Warm Roof Insulated underside Underside N.B. In Scotland there is an external sarking board used for the extreme wind loads on roofs. This would typically be positioned over the trusses. It can be insulating and in this instance the U-values provided may alter. Warm Roof Insulated over 70

37 71 Multi-Occupancy building solutions Multi-Occupancy building solutions 72 Roofs Options to get you Closer to Comfort Rigidur H provides increased rigidity and durability Rigidur H can be used in partition and ceiling systems to give increased rigidity and durability, with excellent acoustic performance, fire resistance and tolerance to moisture. Designed for timber or steel frame and pre-fabricated applications, Rigidur H characteristics are particularly suited to off-site manufacturing, where strength and durability of factory-made panels are of high importance To improve the thermal performance I-Joists can be used Reduced thermal bridging will provide a more even distribution of temperature on the internal wall face improving Thermal Comfort High impact resistant gypsum fibre board Gives high levels of sound insulation, Class A2 and Class O reaction to fire performance and excellent fixing strength The mechanical strength of Rigidur H makes it approved for use in racking-resistant applications in timber frame construction according to the German Institute for Construction Technology in Berlin Excellent spanning capability for flat roof joists or pitched roof rafters Available in depths up to 450mm allows designers to insulate to unprecedented levels Dimensionally stable Can be supplied as loose joists or assettes 1 hour fire rated, for superior fire protection Offers 0.3 u-value thermal resistance Includes EPDM gasket for draft protection Picture frame for seamless look Perfect for retro fit without the mess Posi-joists allow significantly larger spans than traditional timber or I-joists Larger spans without intervention allow for continuous insulation and improve overall thermal performance and Thermal Comfort Isover VARIO XtraSafe Membrane is an innovative membrane system designed to manage moisture within the timber frame The innovative Isover VARIO XtraSafe Membrane intelligently reacts to enhance airtightness but allow moisture vapour to pass through improving indoor air quality and Indoor Air Comfort Allows greater spanning distances for flat roof joists or pitched roof rafters Open web design allows easy installation and access to services eg MVHR Various end fixing details to suit construction detailing Can be supplied as loose joists or cassettes Greatest protection from moisture build up and damage Unique fleece backing, and accompanying applicator tape for quick, effortless installation, and easy repositioning to minimise wastage White gloss finish for seamless look Profilex 1 hour Loft Panels are manufactured in 2 standard dimensions, complying with NHBC Standards 2011 regarding minimum opening: 535 x 535 and 535 x 750 Further sizes available on request. Profilex Access Panels offer a broad range of steel and plastic access panels for both commercial and residential applications. Broad range for next day delivery Non-standard and bespoke panels to suit any specification Variety of frames and locks Fire rated, acoustic sealed panels available

38 73 Multi-Occupancy building solutions Multi-Occupancy building solutions 74 Communal Areas Acoustic Ceilings Create a sound environment Reaching desired levels of acoustic performance, whilst still achieving the creative vision of an interior design may be one of the main challenges faced when planning an interior space. British Gypsum s range of acoustic ceilings, wall linings and sound absorbent surfaces give you the options and flexibility required to combine acoustic performance and aesthetics. Gyprex lay-in tiles provide smooth, wipeable ceiling surface in either black or white. Also available in an antibacterial version (Gyprex BIO) for enhanced hygiene performance. Gyprex is used extensively in retail and healthcare sectors. The Eurocoustic range of stone wool tiles offer the highest possible levels of sound absorption, fire resistance and moisture resistance, with a range of options for education, office and healthcare sectors. The Gyptone is a complete acoustic system solution for creative walls and ceilings. The range includes boards, planks and lay-in tiles. ACTIVair technology comes as standard in the majority of Gyptone products. The Rigitone system offers a range of eight distinctive eye-catching patterns, all with a seamless, joint less appearance. Widely used in the education, office, entertainment and retail sectors. A good sound environment makes for sustainable buildings and happy, healthy people. The control of sound reverberation within communal areas of multi-occupancy buildings is key to ensuring the audio comfort of residents. Ecophon offers acoustic ceiling systems that will help you create good room acoustics for the key communal areas of multi-occupancy buildings Ecophon develops, manufactures and markets acoustic products and systems that contribute to a good sound environment by enhancing peoples wellbeing. Summary by application and absorption class Summary by application and absorption class Application Application % Corridor floor area Absorption Class Tiles Demountable ceiling tiles in exposed lay-in grid system Class C Gyptone POINT 11 Gyptone QUATTRO 50 Gyptone LINE 4 Class B Gyptone SIXTO Gyptone QUATTRO 20 Class A Eurocoustic TONGA Eurocoustic MINERVAL Eurocoustic AREA Eurocoustic ERMES Boards Acoustic panels with fully concealed MF FRAME Gyptone QUATTRO 41 Gyptone SIXTO Rigitone 8/18 Rigitone 12/25 Rigitone 8/18 Q Rigitone 12/25 Q N/A N/A Planks Plank format modules in lengths up to 2400mm Gyptone QUATTRO 55 Gyptone POINT 15 Gyptone LINE 8 Eurocoustic TONGA LS N.B. Where possible it is advisable to apply absorption measure evenly throughout the application area to achieve even acoustic properties. Absorption Class Class C Class A Ceilings Demountable ceiling tiles in grid system Focus A edge Focus E edge Focus Ds edge (Concealed grid) Focus Dg edge (Semi-concealed grid) Focus Lp edge (Semi- concealed grid) Master A edge Master E edge Master Ds edge (Concealed grid) Gedina A edge Gedina E edge Advantage A edge Advantage E edge Super G A edge 35mm or 20mm Sombra A edge Sombra Ds edge (Concealed grid) Ceilings Direct fix no grid system required Focus B edge Focus SQ edge, Focus F edge Master B edge Master SQ edge Master F edge Raft Suspended absorbers Solo Squares Solo Rectangles Solo Circles Solo Freedom Wall panels Wall mounted absorbers Akusto Wall A edge Akusto Wall C edge Akusto One SQ Akusto One Rectangle Akusto One Circle N.B. Where extra absorption is required in areas like communal areas and stairwells suspended raft absorbers or wall mounted panels can be used.

39 75 Multi-Occupancy building solutions Multi-Occupancy building solutions 76 Floors Ground Bearing Slab Beam and Block Suspended Slab Options to get you Closer to Comfort 30mm of weber.floor 4310 levelling screed reinforced with weber.floor 4945 fibre mesh on Weber separating membrane on 200mm Celotex FI5000 (100mm + 100mm) = 0.09 W/m 2 K 150mm Celotex FI5000 (75mm + 75mm) = 0.11 W/m 2 K 125mm Celotex FI5000 (75mm + 50mm) = 0.13 W/m 2 K High guage DPM or radon barrier (designed to BRE guidance) on Perimeter insulation should be minimum 150mm overlap with wall insulation on a concrete floor for compliance with Accredited Construction Details Floor Finish 30mm weber.floor 4310 screed on Weber Separating membrane on Insulation Options 200mm Celotex FI5000 (100mm + 100mm) = 0.09 W/m 2 K 150mm Celotex FI5000 (75mm + 75mm) = 0.11 W/m 2 K 125mm Celotex FI5000 (75mm + 50mm) = 0.13 W/m 2 K High gauge DPM or randon barrier (design to BRE guidance) on Suspended insulated blocks and concrete beam floor (0.19 lambda value) Perimeter insulation should be minimum 150mm overlap with wall insulation on a concrete floor for compliance with Accredited Construction Details Ground Bearing Slab Beam and Block Suspended Slab Using the floor screed weber.floor 4310, a pump-applied, fibre-modified floor screed for depths between 5-50mm Designed for use in conjunction with underfloor heating systems, improving Thermal Comfort weber.floor 4955 db Mat is a thin mat to reduce impact sound in multi-occupancy buildings reducing sound transfer through the floor Used in conjunction with Beam and Block floors, applied after the insulation before the screed finish this can significantly increase Audio Comfort Easy to apply via a pump Suitable for heated and for wooden floors Excellent spreading and smoothing characteristics Low alkalinity Casein-free Easy to install 30m x 1m rolls Reduces impact sound Self adhesive strips for speed of installation N.B. Values and thickness above are based on a P/A calculation of 0.5. To improve the PSI value of the wall to floor interface, consider higher resistance products.

40 77 Multi-Occupancy building solutions Floors Timber Suspended Floor Isover VARIO Membrane 200mm Pasquill joists Perimeter insulation should be 200mm overlap with wall insulation on a suspended timber floors for compliance with Accredited Construction Detail 18mm / 22mm TGV Timber floor boards or 18mm Chipboard (Moisture grade in bathrooms etc.) Celotex FI mm (75mm + 100mm) = 0.15 W/m 2 K 200mm Isover Timber Frame Batt 32 = 0.14 W/m 2 K Isover Renovation Roll Thermal 200mm = 0.15 W/m 2 K Isover SpaceSaver 170mm = 0.20 W/m 2 K Celotex FI mm (100mm + 125mm) = 0.12 W/m 2 K (Note joists would need to be 225mm minimum) Structure Insulation Options Timber Suspended Floor Professional Flooring Solut ions Fast Innovative Proven N.B. Values and thickness above are based on a P/A calculation of 0.5. It should be noted that the use of Isover VARIO should only occur in certain areas of the UK if interstitial condensation is to be limited. The WU-FI moisture analysis shows that various regions have differing vapor diffusion characteristics (Vapour diffusion is the process by which water vapor spreads or moves through permeable materials caused by a difference in water vapor pressure (RH of air). In the current fast moving and dynamic environment, time is money. Weber s comprehensive flooring products range consisting of Industrial and Commercial screeds have been developed for optimum speed, durability, strength, smoothness and are the most technically advanced products on the market. All products are manufactured under the BSI Quality Assurance Schemes ISO 01 and ISO enquiries@netweber.co.uk

41 79 Multi-Occupancy building solutions Multi-Occupancy building solutions 80 Glazing solutions Windows have a key role to play in designing the fabric of multi-occupancy buildings. They let in light, fresh air, and can offer views that connect indoor spaces with the outdoors. However, windows can also be a significant source of excess heat gain in Summer and heat loss in Winter. Carefully considered and designed glazing solutions can make places more comfortable, reduce energy consumption and costs and help to create a brighter, healthier environment. Designing for comfort Careful choice of glazing can greatly improve thermal comfort for people when they are close to windows, especially large windows and doors. Thermal comfort is not only determined by air temperature, the temperatures of the surfaces that surround us also have a great impact. The objective of glazing design is to achieve an inside surface temperature as close as possible to the desired room air temperature. This means glazing that is not cold in winter or hot in summer. When designing homes that are South facing, glazing may require a lower g-value, reducing solar gains entering the building, to reduce overheating potential of the building during peak Summer weather. Whilst on the North facing façade, a higher g-value will be required to facilitate solar energy entering the home. Glazing Solution options to get you closer to comfort: ort: 26% of all heat from homes is lost through windows, so one of the easiest ways to make homes warmer is to upgrade to the right window with the right glass inside. The U-value of a window (Uw) is determined by the U-value of the glass and glass sealed-unit combined with the U-value of the window frame (Uf). Clear double glazing lets in 73% of the sun s heat into a building. Rooms on the West and South of a building can be affected by overheating from the sun s heat if you think this will be a problem we have glasses that give excellent thermal benefits and reduce the heat from the sun, giving additional solar control benefits. Our environment is becoming more congested and generating more noise. Noise impacts our wellbeing and how we live our lives more than we sometimes think affecting one of the most important parts of our day: sleep. How we can help SGG PLANITHERM TOTAL+ is designed to keep the heat in your home, making sure you maximise your heating costs SGG PLANITHERM ONE and 4S are ideal to control the amount of the sun s heat entering the room, whilst still keeping it warm. Reducing the heat from the sun by 20% compared to SGG PLANITHERM TOTAL+ SGG STADIP SILENCE is our range of noise control glass designed to stop unwanted noise entering or leaving your home By using SGG STADIP or SGG STADIP SILENCE in your windows you get the benefit of our high security glass whilst still enabling you to have good visual comfort. Our SGG STADIP range has a transparent film glued in between two layers of thin glass known as laminated glass, this film is much stronger to break through, so anyone trying to break the glass will find it much harder to break through and enter the house. SGG STADIP and SGG STADIP SILENCE offer security protection. When incorporated with the right window frame can meet the Police endorsed Secured by Design standards and the standards within Document Q. Combining these solutions into options for your home: Outer Pane Spacer Inner Pane Benefits 4mm Toughened SGG PLANICLEAR 16mm % argon-filled SGG SWISSPACER Ultimate 4mm toughened SGG PLANITHERM TOTAL+ 4mm Toughened SGG PLANICLEAR 16mm % argon-filled SGG SWISSPACER Ultimate 4mm toughened SGG PLANITHERM ONE T Solar control ideal for South/West elevations 4mm Toughened SGG PLANICLEAR 16mm % argon-filled SGG SWISSPACER Ultimate 6.8mm SGG STADIP and SGG PLANITHERM TOTAL+ Offers additional security 4mm Toughened SGG PLANICLEAR 16mm % argon-filled SGG SWISSPACER Ultimate 6.8mm SGG STADIP and SGG PLANITHERM ONE T Solar control ideal for South/West elevations Offers additional security 4mm Toughened SGG PLANICLEAR 16mm % argon-filled SGG SWISSPACER Ultimate 6.8mm SGG STADIP SILENCE and SGG PLANITHERM TOTAL+ Offers additional security

42 81 Multi-Occupancy building solutions Multi-Occupancy building solutions 82 Glazing solutions: performance table PVCu / Timber Acoustic performance 1.6Uf 1.4Uf 1.2Uf 1.0Uf 0.8Uf Inner pane* Spacer Outer pane** Light transmission Interlayer Weighted, Rw Pink noise, Rw+C Traffic noise, Rw+Ctr Uglass g-glass (std) g-glass (alt)* Uwindow 6.8 SGG PLANITHERM TOTAL+ 16mm % argon-filled SGG SWISSPACER Ultimate 4mm Toughened SGG PLANICLEAR 80% SGG STADIP SGG STADIP SILENCE mm toughened SGG PLANITHERM TOTAL+ 16mm % argon-filled SGG SWISSPACER Ultimate 4mm Toughened SGG PLANICLEAR 81% N/A mm SGG PLANITHERM ONE T 16mm % argon-filled SGG SWISSPACER Ultimate 4mm Toughened SGG PLANICLEAR 69% SGG STADIP SGG STADIP SILENCE mm toughened SGG PLANITHERM ONE T 16mm % argon-filled SGG SWISSPACER Ultimate 4mm Toughened SGG PLANICLEAR 70% N/A NB Window modelled on single sash window W1.23 x H1.48 and assumes a glazing ratio (glazing to frame area, Ag/Aw ) of 0.7. * Low-E coating can be switched to surface 2 for even lower solar gains without impacting U or LT values g-glass (alt) ** Outer pane could be upgraded to SGG DIAMANT low-iron glass for higher light and solar energy transmittance, resulting in an increased g-value and WER rating. All units are 28mm with % argon filling and SGG SWISSPACER Ultimate (psl 0.034)

43 83 Multi-Occupancy building solutions Multi-Occupancy building solutions 84 Soil drainage solutions EEZI-FIT cast iron sanitary pipe system the ideal choice for the residential market The PAM EEZI-FIT cast iron sanitary soil drainage system offers developers who are looking to build high quality homes a premium solution that is sustainable, durable and cost effective. Cast iron is an ideal material to cope with the demands of modern residential construction, in particular for flats and apartments and other buildings for residential purpose. Where cast iron stands out considerably over other materials is: Acoustic performance Residents of high quality flats and apartments, demand a level of acoustic comfort and not to hear plumbing drainage noises such as toilet flushes from their neighbours. EEZI-FIT is more than twice as effective attenuating sound as the best acoustic plastic system by up to 7dB (A) based on BS EN 14366:2004 test results Fire Safety Residents demand the highest level of fire safety. EEZI-FIT Cast iron is CE mark classified to the highest rating possible non-combustible A1 More importantly A1 means minimal smoke generated when exposed to fire widely acknowledged as the biggest killer in any fire. Long Life Cast iron used for the main soil risers and rainwater systems has a life expectancy in line with the years NHBC building life particularly for the structural elements Cast iron is not sensitive to thermal aging with its mechanical strength remaining the same over time. Developers and landlords can only benefit by installing longer life solutions In Multi-Comfort buildings you can make noise without disturbing others. Multi-Comfort buildings provide the highest level of audio comfort by protecting you from outside or neighbour noise, and mean you can make noise without disturbing others inside. Multi-Comfort buildings are a sound place to live, work or learn. Sustainable solution PAM cast iron is made from up to 97% recycled materials and so saves natural resources. It can be completely and systematically 100% recycled at the end of its long life indefinitely without deterioration of its properties. Simple, high quality drainage performance without extras No allowance required for expansion No requirement for fire protection / acoustic insulation EEZI-FIT offers installers: All the benefits of cast iron with speed and simplicity of push-fit assembly, backed by BSI Kitemark third party certification The PAM EEZI-FIT and Ensign ranges BIM library is available to download from the website The BIM library has been designed up to LOD specification level 350, Compatibility: from 2012 Autodesk Revit (.rvt) Experience more at

44 85 Multi-Occupancy building solutions Multi-Occupancy building solutions 86 Multi-Occupancy Building Solutions Version 2, Published September 2016 Together, the brands of Saint-Gobain offer a range of high performance energy-saving solutions for multi-occupancy buildings, which make great places to live, improving daily life. Fabric First Solutions based on the following regulations: England: Part L1A: Conservation of Fuel and Power 2013 (Took effect 6th April 2014) Wales: Part L1A: Conservation of Fuel and Power 2014 (Took effect 31st July 2014) Scotland: Section 6 Domestic Energy (Took effect 1st October 2015) For more information on the solutions featured, visit or the individual brands of Saint-Gobain for specific product information www. glassolutions.co.uk