Isover Solutions Guide

Transcription

1 Isover Solutions Guide Specifying External Masonry Cavity Walls

2 About Saint-Gobain Isover As a world leader in designing, manufacturing and distributing building materials, Saint-Gobain is committed to providing innovative solutions to the most fundamental challenges facing the world today; reducing energy consumption, limiting our impact on the environment and creating a new generation of buildings which are safe, comfortable and energy efficient. Saint-Gobain one of the top 100 Industrial groups in the world and the global leaders in the construction market. The UK is unique in being the only country around the world that has introduced a long-term legally binding framework to tackle the dangers of climate change. At Saint-Gobain Isover we develop sustainable insulation solutions to pr otect both y our built environment and the natural environment. To maintain our focus we have placed environmental responsibility at the heart of our business strategy. Our vision to lead the UK mineral wool market in energy efficiency and ac oustic insulation solutions will be achieved with products that meet the highest thermal, acoustic and fi re safety performance levels. We will meet changing r egulations first and surpass curr ent regulations for those tha t wish to e xcel. Our pr oducts will provide best value solutions f or the r esidential, commercial, RMI and technical building en vironments, be safe to use and help to protect the environment. The UK s current housing stock is responsible for 0% of primary energy used in the UK and 27% of the U K s CO 2 emissions. Masonry construction currently accounts for 75% of all housing star ts in the U K, therefore ensuring these constructions are energy efficient is vital if we are to achieve the commitment of the Clima te Change Act to elimina te carbon emissions fr om our built environment by At Saint-Gobain Isover we ar e committed to working jointly with today s designers and c ontractors to meet these challenges, in making buildings of the futur e as energy efficient as possible. 2 Isover Technical Advice Tel:

3 Achieving high levels of energy efficiency in external masonry cavity walls Benefits of using Isover insulation Excellent thermal performance coupled with unrivalled environmental credentials Isover insulation offers a complete energy efficient solution for external masonry cavity walls. Thermal insulation Thermal conductivity as low as 0.02W/mK Isover insulation helps to meet the requirements of Appr oved Document L 2010 (England & Wales) and the C ode for Sustainable Homes, whilst keeping wall thicknesses to a minimum. Quick and easy on-site installation Isover full-fill cavity wall insulation solutions remove the r equirement for retaining discs and cavity barriers. Isover insulation is manuf actured from high quality glass miner al wool which makes it lightweight and easy to handle, cut and install. Environmental leadership Isover cavity wall insulation has e xcellent environmental credentials and helps towards valuable credits for the C ode for Sustainable Homes. Isover cavity wall insulation achieves the highest BRE Global Gr een Guide online summary r ating. See the Pr oduct Overviews on pages 1, 14 and 15 f or more information. Recycled content of up to 86%. Zero Ozone Depletion Potential (ODP). Global Warming Potential (GWP) of less than 5. Euroclass A1 fire rating Isover cavity wall insulation is totally noncombustible and fi re safe, achieving a Euroclass fire rating of A1. Just One Product on site NEW Our NEW Round The House Roll provides thermal and acoustic performance in external and separating masonry cavity walls, meaning only one product is needed on-site. See page 1 for further details Isover Technical Advice: isover.enquiries@saint-gobain.com

4 Why use Isover s full-fill glass mineral wool solution over rigid foam board alternatives? Reliable on-site performance The flexible properties of Isover full-fill glass mineral wool allow the insula tion to follow the uneven surface of the cavity making it more effective at restricting air movement within the cavity and removing the risk of hea t loss through convection. The thermal performance of Isover full-fill glass mineral wool is not reliant on the reflective properties of foil facings in low emissivity cavities, which can be compromised by dulling of the reflective surface caused by mortar dust. Quick and easy on-site installation No requirement for retaining discs on wall ties Isover full-fill insulation negates the need for retaining discs saving on material costs and installation time. No requirement for cavity fire barriers Isover full-fill insulation helps minimise flanking sound transmission and prevents the spread of fire within the external wall cavity. Cost efficient solution Robust solution Isover full-fill insulation is able to withstand the demands of on-site installa tion, improving in-situ per formance and r educing on-site waste. The following example compares the installed cost of an Isover full-fill glass mineral wool solution and a partial fill system using a rigid foam board. Isover solutions are 51% of the total cost of rigid foam alternatives Isover full-fill glass mineral wool solution 10mm brick, 100mm cavity fully-filled with Isover Cavity Wall Slab (CWS), 100mm medium density block (0.51W/mK), 12.5mm plasterboard on dabs. Component Unit Quantity Price Labour Installed cost Isover Cavity Wall Slab (CWS) 100cm m² Retaining discs on wall ties nr Closing cavities with cavity barriers m Total Installed Cost Rigid foam board partial fill solution 10mm brick, 100mm cavity partial-filled with 50mm Kingspan TW50, 100mm medium density block (0.51W/mK), 12.5mm plasterboard on dabs. Component Unit Quantity Price Labour Installed cost Kingspan TW50 50mm m² Retaining discs on wall ties nr Closing cavities with cavity barriers m Total Installed Cost Note: Based on calculations in SPONS Architects and Builders Price Book 2011 for a 100mm cavity wall with medium density blocks and a U-value of 0.27W/m 2 K. Insulation costs based on an order of 1000m² from a national distributor at time of publication. 4 Isover Technical Advice Tel:

5 Achieving high levels of energy efficiency in external masonry cavity walls Building regulations & standards Approved Document L 2010 Compliance is based on the carbon performance of the whole dwelling, a measure of which is given through the use of the Standard Assessment Procedure (SAP calculation). Compliance is no longer demonstrated by the elemental U-value method, but U-value calculations are required as they form part of the SAP calculation. Although reference is made to Design Limit U-values within Approved Document L, U-values better than the Design Limit are likely to be required to meet the required target emission rate of the building. External Walls Limiting fabric parameter (W/m 2 K) Isover recommended U-value (W/m 2 K) New Build Residential 0.0 < 0.28 New Build Non-Residential 0.5 < 0.0 Section 6 Scotland 2010 The standards and guidance giv en in Sec tion ar e intended to r educe emissions of carbon dio xide by approximately 0% compared to the 2007 standards. The key changes over the 2007 version are: 0% improvement in CO 2 emissions for new buildings Expanded role for the use of low carbon equipment Improved backstops for fabric U-values and service efficiencies for new buildings Section 6 includes a range of measures which can be used in setting the target emission rate for a notional dwelling. Included are guideline notional U-values, as follows: External Walls Limiting fabric parameter (W/m 2 K) Notional U-value (W/m 2 K) New Build Residential New Build Non-Residential BBA approval Isover Cavity Wall Slab (CWS), Isover Hi-Cav 2 and Isover Round The House Roll are endorsed by the British Board of Agrément (BBA) for use in all e xposure zones for buildings up to and including 25m in height. Isover Cavity Wall Slab ( CWS) B BA Certificate 90/2465. Isover Hi-Cav 2 BBA Certificate 90/2465. Isover Round The House Roll - BBA certificate 90/2465. To download a c opy of the cer tificate visit The Code for Sustainable Homes Isover products can be specifi ed to achie ve reduced CO 2 target emission r ates by means of insula tion for improved U-values. Specialist products such as the Isover Vario Membrane System and expert design guidance can also help to achieve improved airtightness performance. For more information or to r equest a C PD, please call Passivhaus Trust Isover is a f ounding member of the P assivhaus Trust. The Passivhaus Trust is an independen t non-profit organisation that willl pr ovide leadership in the U K for adoption of the P assivhaus standard and methodolog y. Its aim is to pr omote the principles of P assivhaus as a highly effective way of reducing energy use and carbon emissions from buildings in the UK. For more information visit Energy Savings Trust Isover cavity wall insulation is approved by the Ener gy Savings Trust. Only the most energy efficient products carry the Ener gy Saving Trust Recommended logo, making it a quick and easy w ay for you to iden tify products that have met the strictest criteria on ener gy efficiency. Isover Technical Advice: isover.enquiries@saint-gobain.com 5

6 Solutions overview All constructions are designed to meet or exceed 2010 Approved Document L Building Regulations and Section 6 (Scotland) as low as Passivhaus standard. The table below provides a snapshot of the U-values that can be achieved by these solutions. Constructions to meet = Approved Document L2A 2010 Approved Document L1A 2010 CfSH - Level 4 Low Carbon - Passivhaus External Wall Solutions (W/m 2 K) Full-fill masonry cavity wall mm Cavity 2 85mm Cavity 100mm Cavity 4 125mm Cavity 5 150mm Cavity 6 200mm Cavity U-value calculation All U-value calculations published within this document have been calculated using the methods and c onventions set out in BR 44 (Conventions for U-value calculations, BRE, 2006). Constructions with cavities 100mm and below are calculated using wall ties at 2.5 per m² with a thermal conductivity of 17W/mK. Constructions with cavities above 100mm are calculated using wall ties at 2.5 per m² with a thermal conductivity of 0.7W/mK. Green Guide A + BRE Green Guide Global online ratings Full-fill masonry cavity wall - 75mm (or 85, 100, 125, 150, 200mm) cavity corresponds to the BRE Green Guide online specification for wall type c onstruction within ca tegory "external walls", sub-category "blockwork ca vity wall", element type "Brick, Stone and Block C avity Wall" ref:- Brickwork outer leaf, insulation, cellular dense blockwork inner leaf, cement:lime mortar, plaster, paint Ref or Brickwork outer leaf, insulation, aircrete blockwork inner leaf, cement mortar, plaster, paint Ref or Brickwork outer leaf, insulation, dense solid blockwork inner leaf, cement mortar, plaster, paint Ref which achie ve a summary r ating of A+ within Domestic, Health, Industrial, Commercial, Retail and education. 6 Isover Technical Advice Tel:

7 Achieving high levels of energy efficiency in external masonry cavity walls Solution overview 1 Full-fill masonry cavity wall 75mm cavity 1 10mm brick 2 75mm cavity fully filled with Isover insulation (see table below) 100mm block (see table below) 4 plasterboard or ThermaLine laminate (see table below) A + Green Guide Please refer to page 6 for the full BRE green guide construction rating specification. U-value W/m²K Isover insulation (75mm) Isover Cavity Wall Slab (CWS) between cavity Block W/mK Wall thickness 0.2 Isover Cavity Wall Slab (CWS) mm WallBoard 0.0 Isover Cavity Wall Slab (CWS) mm WallBoard Isover Hi-Cav 2 (0.02W/mK) between cavity 0.0 Isover Hi-Cav mm WallBoard 0.28 Isover Hi-Cav mm WallBoard Isover Hi-Cav 2 (0.02W/mK) between cavity with ThermaLine laminate 0.26 Isover Hi-Cav mm ThermaLine BASIC 0.25 Isover Hi-Cav mm ThermaLine BASIC 0.24 Isover Hi-Cav mm ThermaLine PLUS 0.2 Isover Hi-Cav mm ThermaLine PLUS 0.22 Isover Hi-Cav mm ThermaLine PLUS 0.18 Isover Hi-Cav mm ThermaLine SUPER Isover insulation Isover CWS Isover Hi-Cav 2 WallBoard ThermaLine BASIC ThermaLine PLUS ThermaLine SUPER NB: Alternative plasterboards from other manufacturers may be used. It is the responsibility of the specifier to ensure equivalent performance. Isover Technical Advice: isover.enquiries@saint-gobain.com 7

8 Solution overview Green Guide A + 2 Please refer to page 6 for the full BRE green guide construction rating specification. Full-fill masonry cavity wall 85mm cavity 1 10mm brick 2 85mm cavity fully filled with Isover insulation (see table below) 100mm block (see table below) 4 plasterboard or ThermaLine laminate (see table below) U-value W/m²K Isover insulation (85mm) Isover Cavity Wall Slab (CWS) between cavity Block W/mK Wall thickness 0.4 Isover Cavity Wall Slab (CWS) mm WallBoard 0. Isover Cavity Wall Slab (CWS) mm WallBoard 0.29 Isover Cavity Wall Slab (CWS) mm WallBoard 0.28 Isover Cavity Wall Slab (CWS) mm WallBoard Isover Hi-Cav 2 (0.02W/mK) between cavity 0.0 Isover Hi-Cav mm WallBoard 0.27 Isover Hi-Cav mm WallBoard 0.26 Isover Hi-Cav mm WallBoard Isover Hi-Cav 2 (0.02W/mK) between cavity with ThermaLine laminate 0.24 Isover Hi-Cav mm ThermaLine BASIC 0.2 Isover Hi-Cav mm ThermaLine BASIC 0.21 Isover Hi-Cav mm ThermaLine PLUS 0.17 Isover Hi-Cav mm ThermaLine SUPER Isover insulation Isover CWS Isover Hi-Cav 2 WallBoard ThermaLine BASIC ThermaLine PLUS ThermaLine SUPER NB: Alternative plasterboards from other manufacturers may be used. It is the responsibility of the specifier to ensure equivalent performance. 8 Isover Technical Advice Tel:

9 Achieving high levels of energy efficiency in external masonry cavity walls Solution overview Full-fill masonry cavity wall 100mm cavity 1 10mm brick 2 100mm cavity fully filled with Isover insulation (see table below) 100mm block (see table below) 4 plasterboard or ThermaLine laminate (see table below) A + Green Guide Please refer to page 6 for the full BRE green guide construction rating specification. U-value W/m²K Isover insulation (100mm) Block W/mK Wall thickness Isover Cavity Wall Slab (CWS) or Isover Round The House Roll (0.06W/mK) between cavity Isover Cavity Wall Slab (CWS) or Isover Round the House Roll Isover Cavity Wall Slab (CWS) or Isover Round the House Roll Isover Cavity Wall Slab (CWS) or Isover Round the House Roll Isover Cavity Wall Slab (CWS) or Isover Round the House Roll mm WallBoard mm WallBoard mm WallBoard mm WallBoard Isover Hi-Cav 2 (0.02W/mK) between cavity 0.27 Isover Hi-Cav mm WallBoard 0.27 Isover Hi-Cav mm WallBoard 0.24 Isover Hi-Cav mm WallBoard 0.2 Isover Hi-Cav mm WallBoard Isover Hi-Cav 2 (0.02W/mK) between cavity with ThermaLine laminate 0.22 Isover Hi-Cav mm ThermaLine BASIC 0.21 Isover Hi-Cav mm ThermaLine BASIC 0.20 Isover Hi-Cav mm ThermaLine PLUS Isover insulation Isover CWS Isover Hi-Cav 2 Isover Round The House Roll WallBoard ThermaLine BASIC ThermaLine PLUS ThermaLine SUPER NB: Alternative plasterboards from other manufacturers may be used. It is the responsibility of the specifier to ensure equivalent performance. Isover Technical Advice: isover.enquiries@saint-gobain.com 9

10 Solution overview Green Guide A + Please refer to page 6 for the full BRE green guide construction rating specification. 4 Full-fill masonry cavity wall 125mm cavity 1 10mm brick 2 125mm cavity fully filled with Isover insulation (see table below) 100mm block (see table below) 4 plasterboard or ThermaLine laminate (see table below) U-value calculations based on thermal efficient wall ties (0.7W/mK) U-value W/m²K Isover insulation (125mm) Isover Cavity Wall Slab (CWS) between cavity Block W/mK Wall thickness 0.25 Isover Cavity Wall Slab (CWS) mm WallBoard 0.24 Isover Cavity Wall Slab (CWS) mm WallBoard 0.22 Isover Cavity Wall Slab (CWS) mm WallBoard 0.21 Isover Cavity Wall Slab (CWS) mm WallBoard Isover Hi-Cav 2 (0.02W/mK) between cavity 0.2 Isover Hi-Cav mm WallBoard 0.22 Isover Hi-Cav mm WallBoard 0.20 Isover Hi-Cav mm WallBoard 0.20 Isover Hi-Cav mm WallBoard Isover Hi-Cav 2 (0.02W/mK) between cavity with ThermaLine laminate 0.18 Isover Hi-Cav mm ThermaLine BASIC 0.17 Isover Hi-Cav mm ThermaLine BASIC 0.16 Isover Hi-Cav mm ThermaLine PLUS Isover insulation Isover CWS Isover Hi-Cav 2 WallBoard ThermaLine BASIC ThermaLine PLUS ThermaLine SUPER NB: Alternative plasterboards from other manufacturers may be used. It is the responsibility of the specifier to ensure equivalent performance Isover Technical Advice Tel:

11 Achieving high levels of energy efficiency in external masonry cavity walls Solution overview 5 Full-fill masonry cavity wall 150mm cavity 1 10mm brick 2 150mm cavity fully filled with Isover insulation (see table below) 100mm block (see table below) 4 plasterboard or ThermaLine laminate (see table below) A + Green Guide Please refer to page 6 for the full BRE green guide construction rating specification. U-value calculations based on thermal efficient wall ties (0.7W/mK) U-value W/m²K Isover insulation (150mm) Isover Cavity Wall Slab (CWS) between cavity Block W/mK Wall thickness 0.21 Isover Cavity Wall Slab (CWS) mm WallBoard 0.21 Isover Cavity Wall Slab (CWS) mm WallBoard 0.19 Isover Cavity Wall Slab (CWS) mm WallBoard 0.19 Isover Cavity Wall Slab (CWS) mm WallBoard Isover Hi-Cav 2 (0.02W/mK) between cavity 0.19 Isover Hi-Cav mm WallBoard 0.19 Isover Hi-Cav mm WallBoard 0.17 Isover Hi-Cav mm WallBoard 0.17 Isover Hi-Cav mm WallBoard Isover Hi-Cav 2 (0.02W/mK) between cavity with ThermaLine laminate 0.16 Isover Hi-Cav mm ThermaLine BASIC 0.15 Isover Hi-Cav mm ThermaLine BASIC 0.14 Isover Hi-Cav mm ThermaLine PLUS Isover insulation Isover CWS Isover Hi-Cav 2 WallBoard ThermaLine BASIC ThermaLine PLUS ThermaLine SUPER NB: Alternative plasterboards from other manufacturers may be used. It is the responsibility of the specifier to ensure equivalent performance. Isover Technical Advice: isover.enquiries@saint-gobain.com 11

12 Solution overview Green Guide A + Please refer to page 6 for the full BRE green guide construction rating specification. 6 Full-fill masonry cavity wall 200mm cavity 1 10mm brick 2 200mm cavity fully filled with Isover insulation (see table below) 100mm block (see table below) 4 plasterboard or ThermaLine laminate (see table below) U-value calculations based on thermal efficient wall ties (0.7W/mK) U-value W/m²K Isover insulation (2 x 100mm) Isover Cavity Wall Slab (CWS) between cavity Block W/mK Wall thickness 0.16 Isover Cavity Wall Slab (CWS) mm WallBoard 0.16 Isover Cavity Wall Slab (CWS) mm WallBoard 0.15 Isover Cavity Wall Slab (CWS) mm WallBoard 0.15 Isover Cavity Wall Slab (CWS) mm WallBoard Isover Hi-Cav 2 (0.02W/mK) between cavity 0.15 Isover Hi-Cav mm WallBoard 0.14 Isover Hi-Cav mm WallBoard 0.14 Isover Hi-Cav mm WallBoard 0.1 Isover Hi-Cav mm WallBoard Isover Hi-Cav 2 (0.02W/mK) between cavity with ThermaLine laminate 0.1 Isover Hi-Cav mm ThermaLine BASIC 0.12 Isover Hi-Cav mm ThermaLine BASIC 0.12 Isover Hi-Cav mm ThermaLine PLUS Isover insulation Isover CWS Isover Hi-Cav 2 WallBoard ThermaLine BASIC ThermaLine PLUS ThermaLine SUPER NB: Alternative plasterboards from other manufacturers may be used. It is the responsibility of the specifier to ensure equivalent performance Isover Technical Advice Tel:

13 Achieving high levels of energy efficiency in external masonry cavity walls Product overview Isover Round The House Roll A glass mineral wool roll providing thermal and acoustic performance in external and separating masonry cavity walls to meet Approved Document L and Appr oved Document E (England and Wales). Only one product required on-site for external and separating walls Thermal bypass solution meets the full-fi ll requirement to help deliv er zero U-value for separating walls as defined in Building Regulations (Approved Document L1A, Table ) BBA approved for use in masonry w alls (England & Wales) Approved for use in se vere exposure zones and in buildings up to and including 25m in heigh t (Certification No: 90/2465) Thermal insulation Thermal Insulation Thermal conductivity of 0.06W/mK. Helps to meet the requirements of Approved Document L 2010 (England & Wales). Acoustic Insulation Full-fill solution helps minimise fl anking sound transmission along the wall cavity and removes the requirement for cavity fire barriers. Easy to install The 2 x 455mm split rolls are compatible with conventional wall tie spacing ensuring ease of installation. Isover Round The House Roll is manufactured from high quality glass miner al wool which makes it lightweight and easy to handle, cut and install. Water resistant Resilient to moisture damage in storage, during transportation and on-site during installation. Euroclass A1 fire rating Totally non-combustible and fire safe. Protected planet Excellent environmental credentials and helps towards valuable credits for the C ode for Sustainable Homes. Isover Round The House R oll corresponds to the BRE Global Gr een Guide online generic specification Glass wool insula tion density 24kg/m³ (ref ) which achie ves a summary rating of A+ within all building types. Recycled content of up to 86%. Zero Ozone Depletion Potential (ODP). Global Warming Potential (GWP) of less than 5. Product Thickness Thermal conductivity (W/mK) Thermal resistance (m²k/w) Width Length Isover Round The House Roll x Roll area (m²) Isover Technical Advice: isover.enquiries@saint-gobain.com 1

14 Product overview Isover Hi-Cav 2 A glass miner al wool full-fi ll cavity slab pr oviding thermal performance in external masonry cavity walls to meet Approved Document L (England and Wales). Enables U-values as low as 0.17W /m 2 K in a single thickness of insulation Full-fill solution helps minimise fl anking sound transmission along the wall cavity and removes the requirement for cavity fire barriers BBA approved for use in masonry w alls (England & Wales) Approved for use in se vere exposure zones and in buildings up to and including 25m in heigh t (Certification No: 90/2465) Thermal insulation Thermal Insulation Thermal conductivity of 0.02 W/mK. Helps to meet the r equirements of Appr oved Document L 2010 (England & Wales). Quick and easy on-site installation The 455mm wide slabs ar e compatible with conventional wall tie spacing ensuring ease of installation. Isover Hi-Cav 2 insulation is manufactured from high quality glass mineral wool which makes it lightweight and easy to handle, cut and install. Water resistant Resilient to moisture damage in storage, during transportation and on-site during installation. Euroclass A1 fire rating Totally non-combustible and fire safe. Environmental Leadership Excellent environmental credentials and helps towards valuable credits for the C ode for Sustainable Homes. Isover Hi-Cav 2 corresponds to the generic specification Glass wool insula tion density 48kg/m³ ref which achieves a summary r ating of A+ within Domestic, Health, Industrial, C ommercial, Retail, Education. Recycled content of up to 86%. Zero Ozone Depletion Potential (ODP). Global Warming Potential (GWP) of less than 5. Product Thickness Thermal conductivity (W/mK) Thermal resistance (m²k/w) Width Length Batts per pack Isover Hi-Cav Isover Hi-Cav Isover Hi-Cav Isover Hi-Cav Isover Hi-Cav Isover Hi-Cav Isover Hi-Cav Pack area (m²) 14 Isover Technical Advice Tel:

15 Achieving high levels of energy efficiency in external masonry cavity walls Product overview Isover Cavity Wall Slab (CWS) A glass miner al wool full-fi ll cavity slab pr oviding thermal performance in external masonry cavity walls to meet Approved Document L (England and Wales). Full-fill solution helps minimise fl anking sound transmission along the e xternal wall cavity and removes the requirement for cavity fire barriers Enables U-values as low as 0.19W /m 2 K in a single thickness of insulation BBA approved for use in masonry w alls (England & Wales). Approved for use in se vere exposure zones and in buildings up to and including 25m in heigh t (Certification No: 90/2465) Thermal insulation Thermal Insulation Thermal conductivity of 0.06W /mk. Helps to meet the r equirements of Appr oved Document L 2010 (England & Wales). Quick and easy on-site installation The 455mm wide slabs ar e compatible with conventional wall tie spacing ensuring ease of installation. Isover Cavity Wall Slab ( CWS) insulation is manufactured from high quality glass mineral wool which mak es it lightweight and easy to handle, cut and install. Water resistant Resilient to moisture damage in storage, during transportation and on-site during installation. Euroclass A1 fire rating Totally non-combustible and fire safe. Environmental Leadership Excellent environmental credentials and helps towards valuable credits for the C ode for Sustainable Homes. Isover Cavity Wall Slab (CWS) corresponds to the generic specifi cation Glass wool insulation density 24k g/m³ ref which achie ves a summary rating of A+ within Domestic, Health, Industrial, Commercial, Retail, Education. Recycled content of up to 86%. Zero Ozone Depletion Potential (ODP). Global Warming Potential (GWP) of less than 5. Product Thickness Thermal conductivity (W/mK) Thermal resistance (m²k/w) Width Length Batts per pack Pack area (m²) Isover Cavity Wall Slab (CWS) Isover Cavity Wall Slab (CWS) Isover Cavity Wall Slab (CWS) Isover Cavity Wall Slab (CWS) Isover Cavity Wall Slab (CWS) Isover Cavity Wall Slab (CWS) Isover Cavity Wall Slab (CWS) Isover Technical Advice: isover.enquiries@saint-gobain.com 15

16 FSC LOGO Isover Order Placement or Order Enquiries: Tel: Fax: Published Date: August 2011 Isover Document Reference: EMWSG2 Isover Technical Advice - Buildings Insulation Technical Enquiries Tel: isover.enquiries@saint-gobain.com Isover UK Commercial Centre Gotham Business Park Leake Road Gotham Nottinghamshire NG11 0LB Tel: Fax: isover@saint-gobain.com Isover reserves the right to revise product specifications without notice. The information in this document was correct to the best of our knowledge at the time of publication. It is the users responsibility to ensure that it remains current prior to use. The information in this document is for guidance only and should not be read in isolation. Users should read and familiarise themselves with all the information contained in this document and ensure that they are fully conversant with the products and systems being used, before subsequent specification or installation. For a comprehensive and up to date library of information visit the Isover website.