SOUND SOLUTIONS TO MEET THE APPROVED DOCUMENT E (2003 EDITION) August 2008

Transcription

1 SOUND SOLUTIONS TO MEET THE APPROVED DOCUMENT E (2003 EDITION) August 2008

2 PART E AT A GLANCE The New Approved Document E, (2003 Edition) was implemented on 1st July This applies to houses, flats, schools, hotel and hostel types of accommodation constructed as new build or formed by material change of use. The SoundPro s guide provides examples of constructions including Rockwool and Rockfon products that meet the requirements of the New Approved Document E (ADE). The guide should be used in conjunction with Approved Document E, and due attention be paid to the flanking noise and other requirements outlined therein. Robust Details Compliance with Robust Details will negate the requirement for pre-completion site testing of new build separating structures for dwelling houses and flats. Robust Details are based upon meeting sound test values which are in excess of those required by Approved Document E. This guide will also highlight proposals for Robust Details involving Rockwool products. SUMMARY OF THE MAIN CHANGES IN THE 2003 EDITION OF PART E 1 PROTECTION AGAINST SOUND FROM OTHER PARTS OF THE BUILDING AND ADJOINING BUILDINGS. This requirement now includes rooms for residential purposes in addition to dwelling houses and flats. Rooms for residential purposes covers a room or suite of rooms, which is not a dwelling house or flat and which is used by one or more persons to live and sleep in, including rooms in hotels, hostels, boarding houses, halls of residence and residential homes. This term excludes rooms in hospitals or similar establishments used for patient accommodation. For the first time there is a requirement for pre-completion site testing. The onus is upon the builder to demonstrate that required levels of sound insulation are achieved. 2 PROTECTION AGAINST SOUND WITHIN A DWELLING HOUSE A new requirement setting standards for internal walls and floors in dwelling houses flats and rooms for residential purposes. Precompletion site testing is not required. Compliance is based upon laboratory testing. 3 REVERBERATION IN THE COMMON PARTS OF BUILDINGS CONTAINING FLATS OR ROOMS FOR RESIDENTIAL PURPOSES. A new requirement to control reverberation in the common parts of buildings containing flats and rooms for residential purposes. Precompletion site testing is not required. 4 ACOUSTIC CONDITIONS IN SCHOOLS 2 Rockwool Limited Pencoed, Bridgend CF35 6NY info@rockwool.co.uk New schools are now controlled under the Building Regulations. This includes sound insulation, reverberation time and indoor ambient noise levels. The normal way of satisfying requirement E4 will be to meet the values for sound insulation, reverberation time and internal ambient noise which are given in section 1 of Building Bulletin 93 The Acoustic Design of Schools produced by DfES. (IBSN: ).

3 PART E REQUIRED PERFORMANCE STANDARDS The requirements of E1 may be satisfied by meeting the sound insulation values set out Tables 1a and 1b of Approved Document E, a summary of which are shown in the tables below. Compliance is established by on site pre-completion testing. The requirements of E2 for internal wall and floor constructions will be satisfied by achieving the sound insulation values set out in Table 2. These are based upon laboratory tested values. There is no requirement for pre-completion site testing for compliance with E2. The new performance requirements are considerably more onerous than those set out in the 1991 Edition. This is due to the addition of a low frequency correction factor (Ctr) which must be applied to the precompletion measure of airborne sound. As a consequence, the new values will be more difficult to achieve for many types of construction. Note: Associated flanking constructions should be followed The person carrying out the building work should arrange for sound insulation testing to be carried out by a test body with appropriate third party accreditation Purpose built dwelling houses and flats Walls PART E PERFORMANCE STANDARDS Table 1a Dwelling houses and flats performance standards for separating walls, separating floors and stairs that have a separating function. Airborne Sound Insulation DnT,W + Ctr db (Minimum values) Impact Sound Insulation L nt,w db (Maximum values) 45 - Floors and stairs Dwelling houses and flats formed by material change of use Walls 43 - Floors and stairs Table 1b Rooms for residential purposes performance standards for separating walls, separating floors and stairs that have a separating function. Airborne Sound Insulation DnT,W + Ctr db (Minimum values) Impact Sound Insulation L nt,w db (Maximum values) Purpose built rooms for residential purposes Walls 43 - Floors and stairs Rooms for residential purposes formed by material change of use Walls Floors and stairs Table 2 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 Rw db (Minimum values) Walls 40 Floors 40 3

4 Importance of design and good workmanship In all cases, good design and installation practice should be followed. It is imperative that measures to eliminate or minimise flanking sound transmission are considered at the design stage and that products are installed correctly by the builder. Explanation of terms In an attempt to decipher some of the terms and abbreviations that you will come across in literature relating to acoustics and Part E, the following table may prove useful. Building Element Walls, floors and roofs, etc Failure to do so may lead to limitation of acoustic performance and the requirements of the Building Regulations not being met. Flanking noise When attempting to make any sort of construction compliant to the Part E Regulations it is important to note that sound does not always go straight through the building element. Indeed if the wall/floor/partition concerned has good sound reducing capabilities then the sound will simply find the easiest way to get from A to B. In short, it it can t go through the wall, it will go up and over or around the side. This is called Flanking Transmission and occurs when sound travels along elements shared by adjacent structures. If flanking constructions are not correctly specified or constructed, flanking transmission can exceed direct transmission and damage the overall capabilities of the construction. One way of dealing with this issue is to use isolation strips around the perimeter edges of floors and walls, as well as the use of an acoustic sealant wherever possible. The New Approved Document E provides advice with respect to flanking details, and the appropriate Rockwool Acoustic Intumescent Sealant, fire stopping and cavity closing products to achieve compliance are detailed within this guide. C tr Decibel (db) D nt,w D nt,w + C tr Flanking Transmission Frequency Hertz (Hz) Impact Sound Internal Floor The correction factor applied to a sound insulation quantity (airborne) to take into account low frequency noise. The unit used to indicate the level of sound with respect to a reference level. A single-number quantity (weighted) which characterises the airborne sound insulation between two rooms, (site measurement). As above, but with the low frequency correction factor included. Airborne or impact sound transmittance between two rooms via an indirect path. The number of pressure variations per second that gives a sound its distinctive tone. The unit of the frequency of the sound. Sound resulting from direct impact on a building element. Any floor that is not a separating floor. Part H (Scotland) The Building Regulations Part H (6th Amendment to the Technical Standards) has been in force since 4th March The key variations between Part E and Part H are summarised in the following table and notes. Internal Wall Any wall that does not have a separation function. L nt,w A single-number quantity (weighted) which characterises the impact sound insulation between floors, (site measurement). Airborne Sound Minimum values of weighed standarised level difference (DnT,W) as defined in BS EN ISO 717-1:1997 Airborne Sound Mean Value (db) Individual Value (db) Walls Floors Impact Sound Maximum values of weighed standarised impact sound pressure level (LnT,W) as defined in BS EN ISO 717-2:1997 Impact Sound Mean Value (db) Individual Value (db) Floors The consideration for low frequency sound (Ctr adjustment factor) does not apply. Robust Details do not currently apply although there are specified standard constructions within the Part H document to satisfy requirements. If a specified standard construction is not used then post construction testing applies. This involves taking four sets of measurements, requiring both mean and individual values to be reached. Noise Pre-completion Site Testing Robust Details R w Separating Floors Separating Walls Unwanted sound A new requirement to Part E where structures not adopting Robust Details will be tested prior to completion to check they reach the required standards. A collection of pre-approved constructions that, if used, negate the need for pre-completion site testing, (applies to new build dwelling houses and flats only). A single-number quantity (weighted) which characterises the airborne sound insulation of a material or building element from measurements undertaken in a laboratory Floors that separate flats or rooms for residential purposes. Walls that separate adjoining dwellings, houses, flats or rooms for residential purposes. The information contained in this guide is believed to be correct at the date of publication and Rockwool Limited will endeavour to keep the publication up to date. However, no representation is made about the suitability, for any purpose, of the information contained herein. The information is without warranty of any kind and in no event shall Rockwool Limited be liable for any direct, indirect or consequential damages or any other damages whatsoever, arising out of or in connection with use of information in this document. Neither shall Rockwool Limited be liable, in any way, for the use of its products in applications different from those described above, since applications in this guide do not represent an exhaustive list of solutions/applications. In all cases, readers are recommended to follow the advice offered by Approved Document E 2003 Edition and to ensure all details are built with proper materials in a workmanlike manner, using good construction practice. Expert advice should be sought where different solutions/ applications are contemplated, or where the extent of any listed solution/ application is in doubt. 4

5 robustdetails NEW BUILD SEPARATING WALLS SEPARATING FLOORS Page 8 9 robustdetails SEPARATING WALLS & FLOORS NEW BUILD SEPARATING WALLS SEPARATING FLOORS FLANKING E1 NEW BUILD SEPARATING WALLS & FLOORS FLANKING E1 MATERIAL CHANGE OF USE SEPARATING WALLS SEPARATING FLOORS E1 MATERIAL CHANGE OF USE SEPARATING WALLS & FLOORS ADE E2 INTERNAL PARTITION WALLS AND INTERNAL FLOORS WALLS FLOORS E2 PARTITION WALLS & INTERNAL FLOORS E3 REVERBERATION IN COMMON AREAS 30 E3 REVERBERATION E4 SCHOOLS CEILINGS WALLS, FLOORS & ROOFS E4 SCHOOLS 5

6 i YOUR DIRECT LINE TO THE SOUND EXPERTS robustdetails isoundpro combines the products and unrivalled expertise of both Rockwool and its sister company, Rockfon, to offer a one stop range of solutions to help you meet the stringent requirements set out in the approved Document E (2003 Edition). E1 NEW BUILD FLANKING So, to identify who best to contact for your particular requirements, please follow this flow chart. MATERIAL CHANGE OF USE It will help you quickly establish whether Rockwool or Rockfon should be your first point of contact. And ensure that we deliver you a fast and efficient service. E2 INTERNAL PARTITION WALLS AND INTERNAL FLOORS E3 REVERBERATION IN COMMON AREAS CEILINGS E4 SCHOOLS WALLS, FLOORS AND ROOFS 6

7 robustdetails SEPARATING WALLS & FLOORS Compliance with Robust Details will negate the requirement for pre-completion site testing of new build separating structures for dwelling houses and flats. Robust Details are based upon meeting sound test values which are in excess of those required by Approved Document E. SEPARATING WALLS TIMBER FRAME WITHOUT SHEATHING BOARD TIMBER FRAME WITH SHEATHING BOARD STEEL FRAME Page 8 Page 8 Page robustdetails SEPARATING WALLS & FLOORS E1 NEW BUILD SEPARATING WALLS & FLOORS FLANKING This guide will also highlight proposals for Robust Details involving Rockwool products. CONCRETE PRECAST CONCRETE PLANK Page 9 4 E1 MATERIAL CHANGE OF USE SEPARATING WALLS & FLOORS SEPARATING FLOORS CONCRETE IN-SITU CONCRETE SLAB Page 9 5 E2 PARTITION WALLS & INTERNAL FLOORS CONCRETE STEEL-CONCRETE COMPOSITE Page 9 6 E3 REVERBERATION 7

8 Robust Details robustdetails SEPARATING WALLS AND FLOORS MEETING APPROVED DOCUMENT E Robust Details Ltd (RDL) was formed in response to the house building industry s need for an alternative to Pre-completion Site Testing. Robust details are construction solutions which only apply to separating walls and floors for new build houses and flats. Safety margins built in All robust details have a significant safety margin built into the constructions so that they would be highly unlikely to fail to meet ADE requirements. All robust details must have achieved a minimum requirement (by site testing at least 30 times) a mean airborne of DnTw + Ctr of 50dB (5dB higher than ADE), with no individual value lower than 47dB, and an impact requirement which has achieved a maximum value of L ntw of 57dB (5dB lower than ADE) with no individual value higher than 60dB. Using robust details avoids the need to carry out Pre-completion Site Testing. This eliminates the risk and uncertainty of remedial action being required on completed floor or wall constructions. To design or build robust details you will need to select the walls and floors from the Robust Details Handbook, available from Robust Details Ltd. Rockwool robust detail solutions Each robust detail has its own site work checklist. They are designed to help builders ensure that the building work is carried out to robust detail specifications, they can also be used by Building Control Bodies, new home warranty providers and others. Full details on how the scheme works is available on the website Rockwool Limited has been actively involved with the robust detail process, both with the House Builders Federation, house builders and Robust Details Ltd. Rockwool currently have robust detail solutions for timber and steel separating walls, and concrete separating floors. It is anticipated that more robust details will be added to the handbook showing Rockwool solutions. 1 robustdetails SEPARATING WALLS SOLUTION 1 E-WT-1 Separating wall Timber frame Without sheathing board Twin timber frames Rockwool SoundPro robust detail guidance specification Wall width 240mm min. between inner faces of wall linings. 50mm min. gap between studs. Wall lining 2 or more layers of gypsum-based board (total nominal mass per unit area 22 Kg/m 2 ) both sides. Rockwool Flexi 60mm min. both sides 2 SOLUTION 2 E-WT-2 Separating wall Timber frame With sheathing board Twin timber frames Rockwool SoundPro robust detail guidance specification Wall width 240mm min. between inner faces of wall linings. 50mm min. gap between studs. Wall lining 2 or more layers of gypsum-based board (total nominal mass per unit area 22 Kg/m 2 ) both sides. Sheathing 9mm min. thick board Rockwool Flexi 60mm min. both sides 3 SOLUTION 3 E-WS-1 Separating wall steel frame Twin metal frames for use in lightweight steel frame houses and flats/apartments Rockwool SoundPro robust detail guidance specification Wall width 200mm min. between inner faces of wall linings. Wall lining 2 or more layers of gypsum-based board (total nominal mass per unit area 22 Kg/m 2 ) both sides. Rockwool Flexi 50mm min. 8 Note: The steel frame profiles shown are indicitave only. Other profiles are acceptable. This robust detail is only suitable for use in lightweight steel frame houses and flats/apartments.

9 4 robustdetails SEPARATING FLOORS SOLUTION 4 Separating floor Concrete Precast concrete plank E-FC-1 Rockwool SoundPro robust detail guidance specification Floating floor Choice of SoundPro solution, see options below (FFT5 Rockwool SlimFloor shown) Screed 40mm min. screed directly applied to plank Cement:sand or proprietary screed 80 Kg/m 2 (min.) mass per unit area. Structural floor 150mm min. precast concrete floor plank 300 Kg/m 2 (min.) mass per unit area. Ceiling See Robust Detail handbook for suitable ceiling treatment 5 SOLUTION 5 Separating floor Concrete In-situ concrete slab Use with reinforced concrete frame construction only. E-FC-2 Rockwool SoundPro robust detail guidance specification Floating floor Choice of SoundPro solution, see options below (FFT4 25mm Rockwool Rockfloor shown) Structural floor 250mm min. in-situ concrete floor slab 2400 Kg/m 3 min. density without screed. Ceiling See Robust Detail handbook for suitable ceiling treatment 6 SOLUTION 6 E-FS-1 Separating floor Concrete Steel-concrete composite In-situ concrete slab supported by profiled metal deck. Rockwool SoundPro robust detail guidance specification Floating floor Choice of SoundPro solution, see options below (FFT4 30mm Rockwool Rockfloor shown) Structural floor In-situ concrete slab, min density 2200 Kg/m 3, supported by profiled metal decking. Ceiling See Robust Detail handbook for suitable ceiling treatment SoundPro Floating Floor options 1) FFT4 Resilient overlay platform floor system: 18mm min. t&g flooring board 25mm or 30mm Rockfloor 2) FFT5 Resilient overlay shallow platform floor system Rockwool Slimfloor: 18mm min. t&g chipboard pre-bonded to 10mm Rockwool 9

10 i YOUR DIRECT LINE TO THE SOUND EXPERTS robustdetails isoundpro combines the products and unrivalled expertise of both Rockwool and its sister company, Rockfon, to offer a one stop range of solutions to help you meet the stringent requirements set out in the approved Document E (2003 Edition). E1 NEW BUILD FLANKING So, to identify who best to contact for your particular requirements, please follow this flow chart. MATERIAL CHANGE OF USE It will help you quickly establish whether Rockwool or Rockfon should be your first point of contact. And ensure that we deliver you a fast and efficient service. E2 INTERNAL PARTITION WALLS AND INTERNAL FLOORS E3 REVERBERATION IN COMMON AREAS CEILINGS E4 SCHOOLS WALLS, FLOORS AND ROOFS 10

11 1 E 1 NEW BUILD SEPARATING WALLS & FLOORS Separating Walls The Part E requirement for New Build Separating Walls (ADE Section 2) is subject to Airborne Sound Regulations. Pre-completion site testing is also required. Part E Performance requirement: Airborne Sound D ntw + C tr = 45 db (or greater) Separating Floors The Part E requirement for New Build Separating Floors (ADE Section 3) is subject to both Airborne and Impact Sound Regulations. Pre-completion site testing is also required. Part E Performance requirement: Airborne Sound D ntw + C tr = 45 db (or greater) Impact Sound L ntw = 62 db (or less) TIMBER FRAME SEPARATING WALLS TIMBER FRAME TIMBER JOIST TIMBER JOIST TIMBER JOIST SEPARATING FLOORS TIMBER JOIST CONCRETE FLOOR CONCRETE FLOOR CONCRETE FLOOR min 100mm Page 12 Page 12 Page 13 Page 14 Page 14 Page 14 Page 15 Page 15 Page robustdetails SEPARATING WALLS & FLOORS E1 NEW BUILD SEPARATING WALLS & FLOORS FLANKING E1 MATERIAL CHANGE OF USE SEPARATING WALLS & FLOORS FLANKING Flanking sound is transmitted indirectly via paths such as windows, external walls and internal corridors. It is defined as sound from a source room but not via a common building element. SEPARATING MASONRY WALL TIMBER FRAME SEPARATING WALL CONCRETE FLOOR FLANKING FLOOR PENETRATION CEILING VOID VOID>1M Page 16 Page 17 Page 17 Page 18 Page E2 PARTITION WALLS & INTERNAL FLOORS E3 REVERBERATION CEILING VOID VOID<=1M Page 18 6 E4 SCHOOLS 11

12 1 NEW BUILD SEPARATING WALLS MEETING APPROVED DOCUMENT E (Section 2) Minimum Required performance standard: Airborne Sound D ntw + C tr = 45 db (or greater) A separating wall is defined as a wall that separates adjoining dwelling houses, flats or rooms used for residential purposes. The Part E requirement for separating walls is subject to airborne sound regulations and pre-completion site testing. Flanking Sound A major cause of reduced acoustic performance in separating walls is Flanking paths via the surrounding structure rather than a direct path through the wall. Good practice detailing at the design stage, especially at key junctions, together with good workmanship will minimise this effect and optimise performance levels. Guidelines of good practice detailing at key junctions are provided throughout the new Approved document E. ADE SECTION 2 SEPARATING WALLS SOLUTION 1 ADE Construction guidance specifications for New build Separating Timber wall type 4 Independent timber frames Min. 2 layers of plasterboard each side laid staggered joint, min mass per unit area of each board 10Kg/m 2 Min. distance between inside faces of plasterboard linings 200mm 50mm Rockwool Flexi fitted in one frame Pre-completion site testing is required 200mm 1 SOLUTION 2 ADE Construction guidance specifications for New build Separating Timber wall type 4 Independent timber frames Min. 2 layers of plasterboard each side laid staggered joint, min mass per unit area of each board 10Kg/m 2 Min. distance between inside faces of plasterboard linings 200mm 25mm Rockwool Acoustic Partition Slab fitted in each frame Pre-completion site testing is required 200mm 2 Note: Refer to Rockwool Robust Details section for alternative timber frame and metal frame separating wall solutions. More information 12 ifor further details visit our website at

13 1 NEW BUILD SEPARATING FLOORS MEETING APPROVED DOCUMENT E (Section 3) ADE Performance Standard: Airborne Sound D ntw + C tr = 45 db (or greater) Impact Sound L ntw = 62 db (or less) A separating floor is defined as a floor that separates adjoining dwelling houses, flats or rooms used for residential purposes. The Part E requirement for separating floors is subject to both airborne and impact sound regulations. Pre-completion site testing is also required. Flanking sound A major cause of reduced acoustic performance in separating floors is due to Flanking paths via the surrounding structure rather than a direct path through the floor. Good practice detailing at the design stage, especially at key junctions, together with good workmanship will minimise this effect and optimise performance levels. Guidelines of good practice detailing at key junctions are provided throughout the new Approved document E. Junctions with floor penetrations Pipes and ducts that penetrate a floor separating habitable rooms in different flats should be enclosed for their full height in each flat. The enclosure should be constructed of material having a mass per unit area of at least 15Kg/m 2 (eg 2 x 12.5mm standard plasterboard) Either line the enclosure with 50mm Rockwool Flexi, or wrap the duct or pipe within the enclosure with 25mm Rockwool Techtube. The enclosure may go down to the floor base if isolated from the floating layer. Penetrations through a separating floor by ducts and pipes should have fire protection to satisfy Building Regulation Part B Fire Safety. Fire stopping should be flexible and also prevent rigid contact between the pipe and floor. Rockwool Insulated Fire Sleeve meets these requirements. ADE SECTION 3 SEPARATING FLOORS Points to note: The floating platform floor should be isolated from the perimeter walls Do not bridge between the floating layer and the base floor with services and fixings that penetrate the resilient layer Leave min. 5mm gap between the floating layer and skirtings. Seal gap with Rockwool Acoustic Sealant Ensure all ceiling perimeters are sealed with tape or Rockwool Acoustic Sealant 3 min 100mm SOLUTION 3 ADE Construction guidance specifications for New build Separating Timber floor type 3.1A: Timber based Platform floor with independent ceiling treatment. 18mm t&g flooring grade chipboard spot bonded to 19mm plasterboard plank on Minimum 25mm Rockwool Rockfloor resilient layer on 15mm OSB floor deck on timber joists. Independent joisted ceiling with 100mm Rockwool Flexi between joists. Ceiling finish, comprising of 2 layers of plasterboard, min mass per unit area 20Kg/m 2 (Eg 2 layers of 12.5mm Lafarge dbcheck has overall mass of 22Kg/m 2 ) Pre-completion site testing is required 13

14 ROCKWOOL SOUNDPRO SOLUTION SEPARATING FLOORS The following Rockwool SoundPro solutions have the potential to meet the requirements set out in Part E Section 3 and to provide a minimum fire resistance of 60 mins. 4 SOLUTION 4 Timber platform floor Airborne: Rw 54 db (Rw C tr ) Impact: L nw 54 db Laboratory test Report ref. L & 273 Airborne: Rw 48 db D ntw + C tr Impact: 58 db L ntw Site test Report no Rockwool SoundPro guidance specification 18mm t&g flooring grade chipboard on 15mm Lafarge dbcheck wallboard on 50mm Rockwool Rockfloor resilient layer on 15mm OSB on 200 x 50mm timber 400mm ctrs 100mm Rockwool Flexi between joists Resiliant bars fixed at right angles to 400mm ctrs. Ceiling finish, 2 layers of 15mm Lafarge dbcheck wallboard (26 Kg/m 2 ) Pre-completion site testing is required 5 SOLUTION 5 Timber batten raft floor Airborne: Rw 49 db (Rw C tr ) Impact: L nw 55 db Test Report ref. BTC 12401A Rockwool SoundPro guidance specification 18mm t&g flooring grade chipboard on 15mm Lafarge dbcheck wallboard screw fixed to 45 x 45mm softwood 400mm ctrs. with 6mm Lafarge RAFT60 foam rubber tape bonded to underside laid on 15mm OSB with 50mm Rockwool Flexi between battens laid on 195 x 45mm timber 400mm ctrs 100mm Rockwool Flexi between joists Resiliant bars fixed at right angles to 400mm ctrs. Ceiling finish, 2 layers of 15mm Lafarge dbcheck wallboard (26 Kg/m 2 ) Pre-completion site testing is required 6 SOLUTION 6 Timber platform floor with recessed downlighters Airborne: Rw 53 db (Rw C tr ) Impact: L nw 54 db Test Report ref. L & 275 Rockwool SoundPro guidance specification 18mm t&g flooring grade chipboard on 15mm Lafarge dbcheck wallboard on 50mm Rockwool Rockfloor on 15mm OSB on 200 x 50mm timber 400mm ctrs 100mm Rockwool Flexi between joists Resiliant bars fixed at right angles to 400mm ctrs. Ceiling finish, 2 layers of 15mm Lafrge dbcheck wallboard (26 Kg/m 2 ) Aspect lighting 60mm downlights (1 per 1.8 sqm) with Tenmatt FF 109 downlighter covers Pre-completion site testing is required 14

15 ADE SECTION 3 SEPARATING CONCRETE FLOORS SOLUTION 7 ADE Construction guidance specifications for New build Separating Dense Concrete floor type 2 with floating layer 7 65mm (min) sand cement screed or alternative 40mm (min) proprietary screed Separating layer building paper 25mm Rockwool Rockfloor resilient layer on Dense concrete floor slab (min mass per unit area 300Kg/m 2 ) Ceiling treatment options: a) single layer plasterboard (min mass 10Kgm 2 ) fixed to timber battens or b) proprietary resilient channels filled with 50mm Rockwool Flexi Pre-completion site testing is required SOLUTION 8 ADE Construction guidance specifications for New build Separating Pre-cast Concrete floor type mm (min) sand cement screed or alternative 40mm (min) proprietary screed Separating layer 25mm Rockwool Rockfloor resilient layer on Pre-cast concrete plank floor with all joints fully grouted (min mass per unit area 300Kg/m 2 ) Ceiling treatment: single layer plasterboard (min mass 10Kgm 2 ) fixed to resilient bars which are fixed to timber battens 50mm Rockwool Flexi between battens Pre-completion site testing is required SOUNDPRO SOLUTION NEW BUILD SEPARATING CONCRETE FLOORS 9 Rockwool SP Acoustic Firestop Perimeter Isolation Strip 30mm Rockfloor 50mm Rockwool Flexi in void between battens 50x50mm timber 600mm ctrs. Construction has been put forward as a Robust Detail candidate More information ifor further details visit our website at SOLUTION 9 Concrete beam & block separating floor system A) Using 65mm Sand & Cement screed: Airborne: D nt,w + C tr = 57 db Impact: L ntw = 43 db B) Using 40mm proprietary screed: Airborne: D nt,w + C tr = 61 db Impact: L ntw = 45 db Test Report ref. C/03/5L/0793/1 A new modified Beam & Block floor system has been specifically designed by the Beam & Block Alliance to comply with the new Part E. Rockwool SoundPro guidance specification 65mm (min) sand cement screed or alternative 40mm (min) proprietary screen (Gyvlon) Separating layer (for proprietary screed only) 30mm Rockwool Rockfloor resilient layer Base floor: min 150mm deep standard concrete floor beams at 400mm ctrs. with 100mm thick dense concrete blocks between beams. Blocks topped with 50mm thick insitu concrete between floor beams to seal floor. Ceiling finish: 50x50mm timber 600mm ctrs. 16mm resilient ctrs. fixed to battens 50mm Rockwool Flexi between battens. 1 layer 12.5mm plasterboard min. mass 10Kgm 2 Pre-completion site testing is required 15

16 FLANKING MINIMISING FLANKING SOUND TRANSMISSION Flanking sound is transmitted indirectly via paths such as windows, external walls and internal corridors. It is defined as sound from a source room but not via a common building element. It is imperative that flanking transmission is considered at the design stage and that the construction detailing specified will eliminate or at least minimise any downgrading of the acoustic performance. The importance of good detailing The Part E recognises that the practicalities of construction will mean that acoustic performances measured in the laboratory will be more difficult to achieve on site. To assist the designer, good practice detailing at key junctions is provided throughout the new Approved Document E. s are presented showing the essential gap filling, joint sealing, fire-stopping, cavity closing and continuity of insulation to prevent sound transmission through critical junctions. ROCKWOOL SOUNDPRO SOLUTION SEPARATING MASONRY WALLS Rockwool Acoustic Party Wall dpc meets the requirements of ADE Section 2 Part E, Robust Details and Part B (Fire stopping) SOLUTION 1 External wall flanking detail Rockwool SoundPro solution Satisfying ADE diagrams 2-5, 2-7, 2-9, 2-19, 2-21, 2-22 & 2-23 to junction of separating wall detail. Combined acoustic and fire stopping solution. Integral insulation dpc solution. Separating wall points to note Ensure all perpend joints are fully filled with mortar. Ensure external cavity wall is stopped with Rockwool Acoustic Party Wall dpc at the separating wall junction (unless the external cavity wall is fully filled with Rockwool). Ensure correct wall ties are used, e.g. butterfly ties (or as BUS 1243) Ensure that mortar does not build up on the wall ties to form acoustic bridge. Ensure the ONLY connections between each side of the separating wall are via the wall ties or foundation. Ensure separating walls are taken full height to the underside of the roof structure and fire stopped with Rockwool Flexi or Rockwool Intumescent Expansion Joint. Acoustic Party Wall dpc More information 16 ifor further details visit our website at

17 2 ROCKWOOL SOUNDPRO SOLUTION TIMBER FRAME SEPARATING WALLS SOLUTION 2 External wall flanking detail Rockwool SoundPro guidance specification Satisfying ADE diagram 2-38 Rockwool Fire Barrier (Timber Frame), 50mm fixed at junction of separating wall. Rockwool Flexi, fixed within separating wall and between external wall timber frame studs. Rockwool TCB Cavity barrier applied to both sides of separating wall junction with external wall detail. Two layers of plasterboard (each min 10Kg/m2) to be used on the external flanking walls, where there is a separating floor. Points to note Independent wall frames should not be connected unless necessary for structural reasons. Structural ties should not be more than gauge (50 x 2.5mm). Where kitchen units back onto separating walls an additional lining on straps is required. Sockets and chases should not puncture the main separating wall linings. Isolated sockets should be back boxed, and not positioned back to back. Junction detail with timber separating floor Where the joists are at right angles to the wall, spaces between the floor joists should be sealed with full depth timber blocking. All junctions between the ceiling and wall linings should be sealed with tape or Rockwool Acoustic Sealant. Ensure that the wall linings are isolated from the floor decking using Rockwool Rockfloor perimeter edge insulation. Ensure that the cavity is firestopped using Rockwool TCB cavity barrier or timber frame wired mat. Skirting boards should be kept 5mm above floor finish and gap filled with Rockwool Acoustic Sealant. Flanking transmission due to services in resilient layer Rockwool Rockfloor of thickness 50mm (min) can be recessed to receive services, ensuring a min. thickness of 20mm Rockfloor is maintained between the services and the sub-floor deck. Use Rockwool Shark tool for accurate recess cutting. 3 ROCKWOOL SOUNDPRO SOLUTION SEPARATING CONCRETE FLOORS SOLUTION 3 Cavity closing at floor detail Rockwool SoundPro solution Satisfying ADE diagram 3-5 & Rockwool Rockfloor resilient layer Resilient layer turned up at edges to isolate floor from wall Rockwool SP Acoustic/FireStop, cavity closure. Seal joints with Rockwool Acoustic Sealant Rockwool Flexi between timber battens 17

18 ROCKWOOL SOUNDPRO SOLUTION FLOOR PENETRATIONS TYPICAL OCCURANCE SOLUTION 4 Ceilings and floors Rockwool SoundPro solution Satisfying ADE diagrams 3-6, 3-17, 3-21 & 4-9 Rockfloor resilient layer Resilient layer turned up at edges to isolate floor from wall Rockwool Insulated Fire Sleeve Seal joints with Rockwool Acoustic Sealant 25mm thick Rockwool Techtube surround to service pipe Service enclosure 4 ROCKWOOL SOUNDPRO SOLUTION IMPROVING ACOUSTIC & FIRE PERFORMANCE WITHIN CEILING VOIDS SOLUTION 5 For ceiling voids greater than 1m Total Room to Room Attenuation = Rw 50 db Test Report ref. SE Rockwool SoundPro guidance specification 2 x 50mm thick Rockwool foil faced Firebarrier provides 90 minutes fire integrity and insulation. Rockfon Suspended Ceiling providing min Rw 30 db room to room attenuation. 5 SOLUTION 6 For ceiling voids up to a max of 1m Total Room to Room Attenuation = Rw 50 db Rockwool SoundPro guidance specification 100mm thick Rockwool foil faced Fire Barrier Slab provides 240 minutes Fire integrity and 60 minutes insulation. Rockfon Suspended Ceiling providing min Rw 30 db room to room attenuation. 6 Room to room attenuation Rw db Typical lay-in grid system 30 Two thickness of 50mm Rockwool Fire Barrier both foil faced Rockwool Fire Barrier slab foil faced on both sides More information ifor further details visit our website at 18

19 1 E 1 MATERIAL CHANGE OF USE SEPARATING WALLS & FLOORS SEPARATING WALLS TIMBER FRAME Page 20 1 robustdetails SEPARATING WALLS & FLOORS Separating Walls This section gives guidance on conversion work for dwelling houses and flats formed by material change of use. The Part E requirement for Separating Walls (ADE Section 4) is subject to Airborne Sound Regulations. Pre-completion site testing is also required. Part E Performance requirement: Airborne Sound D ntw + C tr = 43 db (or greater) Separating Floors The Part E requirement for New Build Separating Floors (ADE Section 4) is subject to both Airborne and Impact Sound Regulations. Pre-completion site testing is also required. Part E Performance requirement: Airborne Sound D ntw + C tr = 43 db (or greater) Impact Sound L ntw = 64 db (or less) METAL FRAME INDEPENDENT CEILING PLATFORM FLOOR SEPARATING FLOORS STAIR TREATMENT E1 NEW BUILD SEPARATING WALLS & FLOORS FLANKING E3 REVERBERATION Min 25mm (See note 1 below) Min 125mm (See note 2 below) Page 20 Page 21 Page 22 Page E1 MATERIAL CHANGE OF USE SEPARATING WALLS & FLOORS E2 PARTITION WALLS & INTERNAL FLOORS PLATFORM FLOOR Page 22 6 E4 SCHOOLS 19

20 1 DWELLING HOUSES AND FLATS FORMED BY MATERIAL CHANGE OF USE : SEPARATING WALLS MEETING APPROVED DOCUMENT E (Section 4) Minimum Required performance standard D ntw + C tr = 43 db (or greater) Meeting Approved Document E (ADE) This section gives guidance on conversion work for dwelling-houses and flats formed by material change of use. Special attention needs to be given to situations where flanking walls or floors are continuous across separating walls or floors as a result of the conversion work. In such instances, additional treatments may be required to control flanking transmission along these continuous elements. Corridors walls and doors The separating walls described in this section should be used between dwelling-houses or flats formed by material change of use and corridors in order to control flanking transmission and provide the required sound insulation. However, it is likely that the sound insulation will be reduced by the presence of a door. Ensure that any door has good perimeter sealing and has a minimum mass of 25 kg/m 2 or minimum sound reduction of R w 29 db. The door should also satisfy the Requirements of Building Regulation Part B - Fire Safety. Note: Pre-completion site testing is not required for walls which contain doors. ADE SECTION 4 SEPARATING WALLS SOLUTION 1 ADE Construction guidance specifications for Wall Treatment 1: Existing solid masonry wall with independent panel(s) 1 100mm (min) existing solid masonry wall plastered on both faces Independent timber or steel studs. Min 10mm gap to be maintained between frame & existing wall 50mm Rockwool Flexi between studs (ADE requires min 35mm) 2 layers of plasterboard min 20Kg/m 2 (approx = to 2x15mm std wallboard or 2 x 12.5mm E-check plasterboards) Avoiding flanking transmission: seal perimeter edges of new plasterboard with tape or Rockwool Acoustic Sealant If existing masonry wall is not plastered or less than 100mm thick then independent panels should be applied to both sides Pre-completion site testing is required ROCKWOOL SOUNDPRO SOLUTION SEPARATING WALLS SOLUTION 2 Separating New Build metal frame wall construction Rw 56 db (Rw 63-7 C tr ) Test Report ref. BTC 10187A 2 Rockwool SoundPro guidance specification 70mm Metal C 600mm ctrs. 2 layers of 15mm Lafarge db Check (total 26 Kg/m 2 ) one side. Other side: two layers of 15mm Lafarge db Check (total 26 Kg/m 2 ) fixed to resilient bars (spaced at 600mm ctrs). 67 mm Rockwool Acoustic Partition Slab Wall thickness 143mm nominal 90 min fire resistance Pre-completion site testing is required This Rockwool SoundPro solution has the potential to meet the requirements of Part E Section 4 where new separating wall constructions are required. 20

21 1 DWELLING HOUSES AND FLATS FORMED BY MATERIAL CHANGE OF USE : SEPARATING FLOORS MEETING APPROVED DOCUMENT E (Section 4) ADE performance standard: Airborne Sound D ntw + C tr 43 db (or greater) Impact Sound L ntw 64 db (or less) Work to existing construction New floor treatments will impose additional loads on the existing structure. The existing structure therefore should be assessed to ensure that the additional loading can be carried safely, with appropriate strengthening applied where necessary. Before a new floor treatment is applied, appropriate remedial work to the existing construction should be undertaken: If the existing floor is timber, then any gaps in floor boarding should be sealed by overlaying with hardboard or filled with sealant Where floor boards are to be replaced, boarding should have a minimum thickness of 12mm, and 100mm minimum Rockwool Roll or Flexi should be laid between the joists in the floor cavity. If the existing floor is concrete and the mass per unit area of the concrete floor is less than 300Kg/m 2, or is unknown, then the mass of the floor should be increased to at least 300Kg/m 2. Any air gaps through a concrete floor should be sealed. A regulating screed may also be required. If there is an existing lath and plaster ceiling, it should be retained as long as it satisfies Building Regulation Part B Fire Safety. Where the existing ceiling is not lath and plaster, it should be upgraded as necessary to provide at least two layers of plasterboard with joints staggered, total mass per unit area 20Kg/m 2. Junctions with floor penetrations Pipes and ducts that penetrate a floor separating habitable rooms in different flats should be enclosed for their full height in each flat. The enclosure should be constructed of material having a mass per unit area of at least 15Kg/m 2 (eg 2 x 12.5mm standard plasterboard) The enclosure may go down to the floor base if floor treatment 2 is used, but ensure isolation from the floating layer. Penetrations through a separating floor by ducts and pipes should have fire protection to satisfy Building Regulation Part B Fire Safety. Fire stopping should be flexible and also prevent rigid contact between the pipe and floor. Rockwool Insulated Fire Sleeve meets these requirements. Workmanship To ensure that a soundproof structure is performing to its maximum level, great care must be taken in its construction. Attention to detail is absolutely essential. It must be built as if it needed to be waterproof, as sound, like water, will find the smallest crack and expose it as a weak part of the structure. Remember an acoustic construction is only as good as its weakest link. Points to note Apply appropriate remedial work to existing construction Seal perimeter of any new ceiling with tape or Rockwool Acoustic Sealant Return resilient layer up around all perimeter edges to isolate the floating layer from the wall surface Leave a small gap (approx 5mm) between the skirting & the floating layer. Fill gap with Rockwool Acoustic Sealant Ensure resilient layer is tightly butted Do not penetrate the resilient layer with fixings Either line the enclosure with 50mm Rockwool Flexi, or wrap the duct or pipe within the enclosure with 25mm Rockwool Techtube. ADE SECTION 4 SEPARATING FLOORS SOLUTION 3 ADE Construction guidance specifications for Material change of use Separating Timber floor treatment 1: Independent ceiling with absorbent material 3 Min 25mm (See note 1 below) Min 125mm (See note 2 below) Independent Ceilings Independent ceiling may be supported by one of the following methods: 1) Independent ceiling joists fixed only to surrounding walls. A min clearance of 25mm must be left between the underside of the existing floor structure and top of the new independent joists. 2) Independent ceiling joists fixed to surrounding walls with additional support provided by resilient hangers attached to the existing floor base. A min clearance of 125mm must be left between the undersound of the existing floor structure and the upper surface of the new independent ceiling. Existing floor boards & joists Existing ceiling upgraded to 20Kg/m 2 (where the existing ceiling is not lath & plaster, it should be upgraded to provide at least 2 layers of plasterboard to provide min total mass 20Kg/m 2 ) New independent ceiling joists with 100mm Rockwool Flexi between new joists 2 layers of plasterboard (staggered joints) to provide min total mass 20Kg/m 2 (eg 2x15mm standard plasterboard) Pre-completion site testing is required This construction should only be considered if there is sufficient ceiling height 21

22 SOLUTION 4 ADE Construction guidance specifications for Material change of use Separating Timber floor treatment 2: Platform floor with absorbent material 4 Min 2 layers of board material to provide min total mass 25Kg/m 2 spot bonded together with joints staggered (eg 18mm t&g flooring grade chipboard & 19mm plasterboard plank). The floating layer to be loose laid over the Rockfloor 25mm (min) Rockwool Rockfloor resilient layer laid on Existing floor deck on existing timber floor joists 100mm Rockwool Flexi between joists Existing ceiling upgraded to 20Kg/m 2. If existing ceiling is of lath & plaster it should be retained providing it satisfies Part B Fire Safety. (If in doubt, underdraw with an additional layer of 12.5mm Firecheck board & screw into joists) Pre-completion site testing is required 5 SOLUTION 5 ADE Construction guidance specifications for Material change of use Stair treatment Stairs are subject to the same sound insulation requirements as floors where they form a separating function. Follow detail provided by diagrams 4-1 and 4-8 of ADE Where there is no cupboard under the stairs: An independent ceiling should be constructed below (see floor treatment 1, 3, overleaf). Use Rockwool Flexi slab within the construction Where there is a cupboard under the stairs: Lay soft covering min 6mm thick over treads Line underside of stairs with min 1 layer of plasterboard (mass 10Kg/m 2 ) Fill space above lining with Rockwool Flexi Build cupboard walls using 2 layers of wallboard (each having min mass 10Kg/m 2 ) Use small heavy well fitted cupboard door Pre-completion site testing is required ROCKWOOL SOUNDPRO SOLUTION SEPARATING FLOORS 6 More information ifor further details visit our website at SOLUTION 6 Separating timber platform floor construction Airborne: Rw 48 db (Rw C tr ) Impact: L nw 57 db Laboratory test Report ref. BTC 12397A Airborne: Rw 48 db D ntw + C tr Impact: 58 db L ntw Site test Report no Enhanced solution using resilient bars If the existing ceiling is being replaced, the sound performance of the floor can be further enhanced by fitting resilient bars which isolate the ceiling from the floor structure. Rockwool SoundPro guidance specification 18mm t&g flooring grade chipboard spot bonded to 15mm Lafarge dbcheck board. (total mass 28Kg/m 2 ) 30mm (min) Rockwool Rockfloor resilient layer Min 15mm OSB floor deck on existing timber floor joists (min 195mm x 45mm) 100mm Rockwool Flexi between joists Resilient bars fixed at right angles to 400mm ctrs. Ceiling finish 2 layers of 15mm Lafarge dbcheck board (26Kg/m 2 ) Pre-completion site testing is required 22

23 2 E 2 NEW BUILD INTERNAL PARTITION WALLS & INTERNAL FLOORS TIMBER STUD METAL STUD Rw 40 db Rw 41 db Page 24 Page robustdetails SEPARATING WALLS & FLOORS The Approved Document E 2003 Edition Resistance to the passage of sound, introduced standards for internal walls and floors in dwelling houses, flats and rooms for residential purposes. By adopting the Rockwool SoundPro solutions you can meet and exceed the required ADE standards for internal walls and floors. No pre-completion site testing required. EXCEEDING APPROVED DOCUMENT E SUPERIOR SOLUTIONS FOR ENHANCED PARTITION PERFORMANCE s 3 10 These partition solutions have been laboratory tested to give a superior acoustic performance where a high level of airborne sound insulation is required over and above the minimum regulations of Approved Document E. 50mm STUD 1 LAYER PLASTERBOARD 70mm STUD 1 LAYER PLASTERBOARD 70mm STUD 2 LAYERS PLASTERBOARD INTERNAL PARTITION WALLS 70mm STUD 2 LAYERS PLASTERBOARD 70mm STUD RESILIENT BAR 1 LAYER PLASTERBOARD 70mm STUD RESILIENT BAR 2 LAYERS PLASTERBOARD 146mm STUD 1 LAYER PLASTERBOARD 75x38mm TIMBER STUD 2 LAYERS PLASTERBOARD Rw 43 db Rw 44 db Rw 55 db Rw 57 db Rw 54 db Rw 63 db Rw 53 db Rw 46 db Page 25 Page 25 Page 25 Page 25 Page 26 Page 26 Page 26 Page E1 NEW BUILD SEPARATING WALLS & FLOORS FLANKING E1 MATERIAL CHANGE OF USE SEPARATING WALLS & FLOORS E2 PARTITION WALLS & INTERNAL FLOORS INTERNAL FLOORS METAL JOIST TIMBER JOIST Rw 40 db Rw 40 db Page 27 Page E3 REVERBERATION E4 SCHOOLS 23

24 2 INTERNAL PARTITION WALLS MEETING APPROVED DOCUMENT E (E2) Minimum Required performance standard Rw 40dB Meeting Approved Document E (ADE) The new Approved Document E (2003 edition) introduces, for the first time, performance criteria for internal walls and floors. This is based on laboratory rating (Rw) for which a minimum value for airborne sound insulation of Rw 40dB is required. ADE Section 5 internal wall type B gives examples of timber or metal stud partition constructions which should achieve this value. ADE SECTION 5 INTERNAL WALL TYPE B TIMBER STUD PARTITION ADE Construction guidance specifications Min 75mm deep timber studs Min 25mm mineral wool between studs (25mm Rockwool Acoustic Partition slab) Single layer plasterboard with min mass per unit area 10kg/m 2 (eg 15mm standard wallboard) METAL STUD PARTITION ADE Construction guidance specifications Min 45mm metal studs Min 25mm mineral wool between studs (as 25mm Rockwool Acoustic Partition slab or 50mm Rockwool Flexi in min. 60mm metal studs) Single layer plasterboard with min mass per unit area 10kg/m 2 (eg 15mm standard wallboard) ROCKWOOL SOUNDPRO SOLUTIONS INTERNAL WALL TYPE B SOLUTION 1 Timber stud wall To meet part E2 Rw 40dB NBS Plus Clause P10:230 Test Report ref. PT 63112S RQ SOLUTION 2 Metal stud wall Exceeds part E2 Rw 41dB NBS Plus Clauses K10:115, K10:125 Test Report ref: L Rockwool SoundPro guidance specification 63 x 38 timber 600mm ctrs. 50mm Rockwool Flexi between studs Single layer of 12.5mm Lafarge dbcheck board mass per unit area 11kg/m 2 each side Advantages of Rockwool SoundPro solution: Meets Part E min. sound performance level Only requires 63mm deep timber studs Reduced wall thickness Rockwool SoundPro guidance specification 50mm lightweight metal 600mm ctrs. 25mm Rockwool Acoustic Partition Slab between studs Single layer of 12.5mm Lafarge standard wallboard mass per unit area 8kg/m 2 each side Advantages of Rockwool SoundPro solution: Exceeds Part E sound performance level Only requires 12.5mm standard wallboard Reduced partition weight More information 24 ifor further details visit our website at

25 3 One layer of 12.5mm Lafarge E-check both sides SOLUTION 3 Rw 43dB Studs: 50mm Metal C 600 mm ctrs. Facings: One layer of 12.5 mm Lafarge E-check Wallboard (10 Kg/m 2 ) both sides Insulation: 47 mm Rockwool Acoustic Partition Slab Report No: BTC 10192A Technical Data 75 47mm Acoustic Partition Slab Nominal weight kg/m 2 Maximum height m Nominal thickness mm Fire resistance min 4 One layer of 12.5mm Lafarge E-check both sides SOLUTION 4 Rw 44dB Studs: 70mm Metal C 600mm ctrs. Facings: One layer of 12.5 mm Lafarge E-check Wallboard (10 Kg/m 2 ) both sides Insulation: 67 mm Rockwool Acoustic Partition Slab Report No: BTC 10190A Technical Data 95 67mm Acoustic Partition Slab Nominal weight kg/m 2 Maximum height m Nominal thickness mm Fire resistance min 5 Two layers of 12.5mm Lafarge Standard Wallboard both sides SOLUTION 5 Studs: 70mm Metal C 600mm ctrs. Facings: Two layers of 12.5 mm Lafarge Standard Wallboard (total 16 Kg/m 2 ) both sides Insulation: 67 mm Rockwool Acoustic Partition Slab Report No: BTC 10191A Technical Data Rw 55dB mm Acoustic Partition Slab Nominal weight kg/m 2 Maximum height m Nominal thickness mm Fire resistance min 6 Two layers of 15mm Lafarge db-check Wallboard both sides SOLUTION 6 Studs: 70mm Metal C 600mm ctrs. Facings: Two layers of 15 mm Lafarge db check Wallboard (26 Kg/m 2 ) both sides Insulation: 70 mm Rockwool Flexi Based on Report No: BTC 10183A Technical Data Rw 57dB mm Flexi Nominal weight kg/m 2 Maximum height m Nominal thickness mm Fire resistance min 25

26 7 One layer of 15mm Lafarge db Check both sides SOLUTION 7 Rw 54dB Studs: 70mm Metal C 600mm ctrs. Facings: One layer of 15mm Lafarge db Check (13 Kg/m 2 ) one side. Other side one layer of 15mm Lafarge db Check (13 Kg/m 2 ) fixed to resilient bars (spaced at 600mm ctrs). Insulation: 67mm Rockwool Acoustic Partition Slab Report No: BTC 10189A Technical Data mm Acoustic Partition Slab Lafarge resilient bars Nominal weight kg/m 2 Maximum height m Nominal thickness mm Fire resistance min 8 Two layers 15mm Lafarge db Check both sides SOLUTION 8 Rw 63dB Studs: 70mm Metal C 600mm ctrs. Facings: Two layers of 15mm Lafarge db Check (total 26 Kg/m 2 ) one side. Other side two layers of 15mm Lafarge db Check (total 26 Kg/m 2 ) fixed to resilient bars (spaced at 600mm ctrs). Insulation: 67mm Rockwool Acoustic Partition Slab Report No: BTC 10187A Technical Data mm Acoustic Partition Slab Lafarge resilient bars Nominal weight kg/m 2 Maximum height m Nominal thickness mm Fire resistance min 9 One layer of 15mm Lafarge Firecheck Wallboard both sides SOLUTION 9 Rw 53dB Studs: 146mm Metal C 600mm ctrs. Facings: One layer of 15mm Lafarge Firecheck Wallboard (12 Kg/m 2 ) both sides Insulation: 1 x 140mm or 2 x 70mm Rockwool Flexi between studs Report No: BTC 10193A Technical Data 176 One layer of 140mm or two layers of 70mm Flexi Nominal weight kg/m 2 Maximum height m Nominal thickness mm Fire resistance min mm timber studs at 600 mm centres 50mm Rockwool Flexi SOLUTION 10 Rw 46dB Studs: 75x38mm timber 600mm ctrs. Facings: Two layers of 12.5mm Lafarge Standard Wallboard (16 Kg/m 2 ) both sides Insulation: 50mm Rockwool Flexi between studs Report No: L/2059/E/4 Technical Data Two layers of 12.5mm Lafarge Standard Wallboard both sides Nominal weight kg/m 2 Maximum height m Nominal thickness mm Fire resistance min More information 26 ifor further details visit our website at

27 2 INTERNAL FLOORS MEETING APPROVED DOCUMENT E (E2) Minimum Required performance standard Rw 40dB Meeting Approved Document E (ADE) The new Approved Document E (2003 edition) introduces, for the first time, performance criteria for internal walls and floors. This is based on laboratory rating (Rw) for which a minimum value for airborne sound insulation of Rw 40dB is required. ADE Section 5 internal floor type C gives examples of internal timber or metal joist floor constructions which should achieve this value. ADE SECTION 5 INTERNAL FLOOR TYPE C SOLUTION 11 ADE Construction guidance specifications for Internal Timber or metal joisted floors Rw 40dB Timber or wood based floor of min. mass per unit area 15Kg/m 2 (eg 22mm chipboard) Timber or metal floor 400mm ctrs. Min. 100mm thick mineral wool between joists (Rockwool Flexi) Single layer plasterboard, min. mass per unit area 10Kg/m 2 (eg 15mm Standard wallboard) 11 SOUNDPRO SOLUTION TIMBER JOIST INTERNAL FLOOR TYPE C SOLUTION 12 Timber joist Internal Floor To meet part E2 Rw 40dB NBS Plus Clause P10:240 Test Report ref. L & 265 Rockwool SoundPro guidance specification Standard 18mm t&g flooring grade chipboard, mass per unit area 12.4 Kg/m 2 Timber 400mm ctrs. 100mm thick Rockwool Flexi between joists Single layer of Standard 12.5mm plasterboard ceiling, mass per unit area 8Kg/m 2 12 Advantages of Rockwool SoundPro solution: Permits use of standard 12.5mm plasterboard ceiling Standard 18mm chipboard flooring Reduced floor weight Unlike Roll products, Rockwool Flexi can be friction fitted from below. 27

28 i YOUR DIRECT LINE TO THE SOUND EXPERTS robustdetails isoundpro combines the products and unrivalled expertise of both Rockwool and its sister company, Rockfon, to offer a one stop range of solutions to help you meet the stringent requirements set out in the approved Document E (2003 Edition). E1 NEW BUILD FLANKING So, to identify who best to contact for your particular requirements, please follow this flow chart. MATERIAL CHANGE OF USE It will help you quickly establish whether Rockwool or Rockfon should be your first point of contact. And ensure that we deliver you a fast and efficient service. E2 INTERNAL PARTITION WALLS AND INTERNAL FLOORS E3 REVERBERATION IN COMMON AREAS CEILINGS E4 SCHOOLS WALLS, FLOORS AND ROOFS 28

29 E 3 3 REVERBERATION IN COMMON AREAS SUSPENDED ACOUSTIC CEILINGS SONAR, SCHOLAR & KORAL Category Page 30 1 robustdetails SEPARATING WALLS & FLOORS The Approved Document E 2003 Edition Resistance to the passage of sound, introduced standards for reverberation in flats and rooms for residential purposes. By adopting the Rockfon ceiling or wall absorption solutions you can meet the required ADE standards for reverberation. No pre-completion site testing required. MEETING APPROVED DOCUMENT E SOLUTIONS FOR SOUND ABSORPTION These Rockfon ceilings and sound absorption solutions have been laboratory tested to provide acoustic performance in line with the requirements of Approved Document E (E3). BONDED ACOUSTIC CEILINGS SONAR B TILES DIRECT FIX ACOUSTIC CEILINGS SONAR C & G TILES SEAMLESS ACOUSTIC CEILINGS ROCKFON MONO ACOUSTIC ACOUSTIC WALL ABSORBERS ROCKFON BOXER 40mm Category Page 31 Category Page 31 Category Page 32 Category Page E1 NEW BUILD SEPARATING WALLS & FLOORS FLANKING E1 MATERIAL CHANGE OF USE SEPARATING WALLS & FLOORS E2 PARTITION WALLS & INTERNAL FLOORS ACOUSTIC WALL ABSORBERS SOUND ABSORBING PICTURES Category Page 33 5 E3 REVERBERATION E4 SCHOOLS 29

30 3 REVERBERATION IN COMMON AREAS MEETING APPROVED DOCUMENT E (E3) REVERBERATION IN THE COMMON INTERNAL PARTS OF BUILDINGS CONTAINING FLATS OR ROOMS FOR RESIDENTIAL PURPOSES. Meeting Approved Document E (ADE) There are many options within the Rockwool Rockfon Ceilings and Acoustics s portfolio that you can choose from to comply with the above requirements. An overview of some of the many Rockfon solutions is shown below. For more information contact Rockfon. Rockfon ADE Part E3 sound absorption solutions can be grouped into the following categories: 1. Suspended acoustic ceilings with Classes C, B and A sound absorption (available in a wide variety of finishes, sizes and edge details) 2. Bonded acoustic ceilings with Class C sound absorption 3. Direct fix acoustic ceilings with Class C sound absorption (with no or minimal airspace behind) 4. Seamless acoustic ceilings with Class B sound absorption 5. Acoustic wall absorption solutions with Class B and better sound absorption All, or a combination of these solutions can be used to comply with the sound absorption requirements of E3. CATEGORY 1 SUSPENDED ACOUSTIC CEILINGS ISO CLASS A ACOUSTIC CLASSES A, B & C Sonar, Scholar and Koral Acoustic Ceilings Excellent sound absorption - Up to ISO Class A, α w = 1.0 Made from non combustible stone wool Pleasing smooth white or coloured surfaces & wide range of edge details Easy to fit Large range of sizes from 500mm x 500mm to 2400mm x 600mm Suitable virtually everywhere Minimum suspension depth 100mm Standard module sizes Sound absorption, Scholar A24 (20mm) k 2k 4k Hz Edge details A24 F1024 F1015 D (Monolith) Technical Helpline 30 Technical advice relating to Rockfon s E3 & E4 solutions are available from the Rockfon Technical Helpline on i

31 CATEGORY 2 BONDED ACOUSTIC CEILINGS SONAR B TILES Bond to a horizontal surface Excellent sound absorption - ISO Class C, α w = 0.7 Made from non combustible stone wool Pleasing smooth white surface 600mm x 600mm tiles with bevelled edges 18mm suspension depth Ideally suited where ceiling height is limited Edge detail ISO CLASS C B Sound absorption, Sonar B k 2k 4k Hz CATEGORY 3 DIRECT FIX ACOUSTIC CEILINGS ISO CLASS C SONAR C & G TILES Fix direct to horizontal surface using concealed hooks Excellent sound absorption - ISO Class C, α w = 0.7 Made from non combustible stone wool Pleasing smooth white surface Range of tile sizes with bevelled edges 22mm minimum suspension depth Ideally suited where ceiling height is limited Edge details C G Sound absorption, Sonar C & G k 2k 4k Hz 31

32 CATEGORY 4 SEAMLESS ACOUSTIC CEILINGS ISO CLASS B ROCKFON MONO ACOUSTIC Seamless acoustic alternative to traditional ceiling & wall linings Excellent sound absorption - ISO Class B, α w = 0.85 Made from non combustible stone wool Pleasing white surface special colours installed to order Installed by Rockfon authorized installers Use on ceilings and walls virtually anywhere above 1800mm 85% SOUND ABSORPTION Sound absorption, Rockfon Mono Acoustic Ceiling System, 200mm suspension and 1.0kg render per m k 2k 4k Hz CATEGORY 5 ACOUSTIC WALL ABSORBERS ROCKFON BOXER 40mm ISO CLASS A Excellent sound absorption - ISO Class A, α w = 0.9 Made from non combustible stone wool Pleasing reinforced smooth white cleanable surface Easy to fit using standard RockLink grid components Use virtually anywhere above 1800mm from finished floor level Sound absorption, Boxer A24 (40mm) k 2k 4k Hz Technical Helpline Technical advice relating to Rockfon s E3 & E4 solutions are available from the Rockfon Technical Helpline on i

33 CATEGORY 5 ACOUSTIC WALL ABSORBERS ISO CLASS A SOUND ABSORBING PICTURES Instant sound absorption! Just as easy as hanging ordinary pictures Excellent sound absorption - ISO Class A, α w = 0.9 Made from non combustible stone wool Pleasing smooth white, plain colours, wood, marble effect & choose your own picture surfaces - made to order Individually framed and easy to fit Large range of sizes 600mm x 600mm 1800mm x 1200mm Use virtually anywhere above 1800mm from finished floor level Sound absorption, Rockfon Pictures (35mm) k 2k 4k Hz ACOUSTIC SUMMARY The core quality of Rockwool Rockfon Sound easily passes through the microperforated surface and is efficiently absorbed in the Rockwool core. Smooth, unbroken surfaces provide high light reflection. The 100% Rockwool core is non hygroscopic; it does not burn and is not attacked by rot, fungus and bacteria. Rockfon Limited 26/28 Hammersmith Grove, Hammersmith, London W6 7HA info@rockfon.co.uk 33

34 i YOUR DIRECT LINE TO THE SOUND EXPERTS robustdetails isoundpro combines the products and unrivalled expertise of both Rockwool and its sister company, Rockfon, to offer a one stop range of solutions to help you meet the stringent requirements set out in the approved Document E (2003 Edition). E1 NEW BUILD FLANKING So, to identify who best to contact for your particular requirements, please follow this flow chart. MATERIAL CHANGE OF USE It will help you quickly establish whether Rockwool or Rockfon should be your first point of contact. And ensure that we deliver you a fast and efficient service. E2 INTERNAL PARTITION WALLS AND INTERNAL FLOORS E3 REVERBERATION IN COMMON AREAS CEILINGS E4 SCHOOLS WALLS, FLOORS AND ROOFS 34

35 4 E 4 SCHOOLS CEILINGS & WALL ABSORBERS, WALLS, FLOORS & ROOFS New schools are now controlled under the Building Regulations. This includes sound insulation, reverberation time and indoor ambient noise levels. The normal way of satisfying requirement E4 will be to meet the values for sound insulation, reverberation time and internal ambient noise which are given in section 1 of Building Bulletin 93 The Acoustic Design of Schools produced by DfES. (ISBN: ). MEETING APPROVED DOCUMENT E SOLUTIONS FOR SCHOOLS CEILINGS & WALL ABSORBERS WALLS SUSPENDED ACOUSTIC CEILINGS FLOATING ACOUSTIC CEILING ISLANDS FLOATING ACOUSTIC BAFFLES WALL ABSORPTION SOLUTIONS 50mm STUD 1 LAYER PLASTERBOARD 70mm STUD 1 LAYER PLASTERBOARD 70mm STUD 2 LAYERS PLASTERBOARD 70mm STUD RESILIENT BAR 2 LAYERS PLASTERBOARD 146mm STUD 1 LAYER PLASTERBOARD Rw 41 db Rw 44 db Rw 57 db Rw 63 db Rw 53 db Category 1 Page 36 Category 2a Page 37 Category 2b Page 37 Category 2c Page 37 1 Page 38 2 Page 38 3 Page 39 Page 39 4 Page 39 5 robustdetails SEPARATING WALLS & FLOORS E1 NEW BUILD SEPARATING WALLS & FLOORS FLANKING E1 MATERIAL CHANGE OF USE SEPARATING WALLS & FLOORS The Rockfon acoustic ceilings and sound absorption solutions can be used to meet the Building Bulletin 93 requirements for reverberation time and speech intelligibility. The walls and floors detailed can be used to comply with the airborne and impact sound insulation requirements of Building Bulletin 93. FLOORS TIMBER PLATFORM FLOOR TIMBER PLATFORM FLOOR TIMBER BATTEN RAFT FLOOR CONCRETE FLOOR CONCRETE FLOOR Rw 59 db Rw 66 db Rw 62 db Airborne: Rw 55 db Impact: 55 L nw db Airborne: Rw 57 db Impact: 53 L nw db Page 40 Page 40 Page 40 Page 41 Page E2 PARTITION WALLS & INTERNAL FLOORS E3 REVERBERATION CONCRETE FLOOR Airborne: Rw 59 db Impact: 50 L nw db Page E4 SCHOOLS 35

36 4 ACOUSTIC CONDITIONS IN SCHOOLS MEETING APPROVED DOCUMENT E (E4) SOUND ABSORPTION CEILINGS & ROOM ACOUSTIC SOLUTIONS FOR SCHOOLS. Rockfon ADE Part E4 solutions can be grouped into the following categories: 1. Suspended acoustic ceilings 2. Additional room acoustic solutions which can be used with thermal mass constructions: a) Floating acoustic ceiling islands b) Floating acoustic baffles c) Acoustic wall absorbers CATEGORY 1 SUSPENDED ACOUSTIC CEILINGS SCHOLAR, SONAR & KORAL ACOUSTIC CEILINGS ISO CLASS A, B & C SUMMARY APPLICATION GUIDE Set out in line with the spaces detailed in Building Bulletin 93 Rockfon Ceiling Tile SOLUTION OPTIONS TILE EDGE DETAIL A15/ 24 A24 A24 A24 F815/ F824 A24 D A24 A24 A24 MODULE SIZE (MM) 600 x x , 1800, 2100, 2400 x x x , 1800, 2100, 2400 x x x x x x , 1200, 2400 x x , 1200 x 600 Rockfon Ceiling Grid BB93 Reverberation RT time APPLICATION AREA Tmf(sec s) Nursery school playrooms <0.6 Nursery school quiet rooms <0.6 Primary school: classroms, class bases, general teaching areas, small group rooms <0.6 Secondary school: classroms, general teaching areas, seminar rooms, tutorial rooms, language laboratories <0.8 Open Plan Teaching areas <0.8 Resource areas <1.0 Music Music classrooms <1.0 Small practice/group room <0.8 Ensemble room Performance/recital room Recording Studio Control room for recording <0.5 Lecture rooms Small (fewer than 50 people) <0.8 Large (more than 50 people) <1.0 Classrooms designed specifically for use by hearing impaired pupils <0.4 Study room (individual study, withdrawal, remedial work, teaching preparation) <0.8 Libraries <1.0 Science laboratories <0.8 Drama studios <1.0 Design and Technology areas <0.8 Assembly halls, multi-purpose halls (drama, PE, audio/visual presentations, occasional music) Audio/visual, video conference, art rooms <0.8 Atria, circulation space used by pupils <1.5 Indoor sports hall <1.5 Gymnasium <1.5 Dance studio <1.2 Swimming pool <2.0 Interview/counselling rooms, medical rooms <0.8 Dining rooms <1.0 Ancillary spaces Kitchens* <1.5* Offices*, staff rooms* <1.0* Corridors*, stairwells* see E3 Coats and changing areas* <1.5* Toilets* <1.5 Indicates that this format is ideally suited for this application * See note in Building Bulletin 93 Table 1.5 Koral Koral Planks Scholar Scholar Planks Koral Teg Hygenic Sonar Monolith Boxer 40mm (wall absorber) Koral Tenor Koral 40mm RockLink 15 or 24mm RockLink 24mm FasTrac RockLink ECR (Enhanced Corrosion Resistance) 15 or 24mm

37 CATEGORY 2a FLOATING ACOUSTIC CEILING ISLANDS ISO CLASS A Corridors, entrance halls and stairwells in schools Also see section E3 Many of the solutions in the E3 section could be considered suitable for use in many areas within schools. When using the majority of Rockfon ceiling solutions within corridors, etc. in schools, the use of the following symbols, available from the DfES, will be appropriate as a means of demonstrating compliance with BB 93. CATEGORY 2b FLOATING ACOUSTIC BAFFLES ISO CLASS B & C Excellent sound absorption - ISO Class B, α w = 0.85 Made from non combustible stone wool Minimal impedance to heat transfer from floor slab Pleasing white surface special colours to order Cylindrical sound absorbing baffles sound pipes are also available 100% A Rockfon Scholar For more information 100% B Rockfon Sonar 100% C Rockfon Koral On your school project, just give us a call on to discuss the many added value cost effective Rockfon acoustic solutions that will enable you to comply with Approved Document B Parts E3 and E4 and Building Bulletin 93. More information can be found on the Rockfon web site: Typical sound absorption Standard module sizes 1200 x 300 x 50 mm 1200 x 450 x 50 mm 1200 x 600 x 50 mm CATEGORY 2c ACOUSTIC WALL ABSORPTION SOLUTIONS BOXER 40mm ISO CLASS A Sound absorption, Scholar A24 (20mm) k 2k 4k Hz Technical Helpline Excellent sound absorption - ISO Class A, α w = 0.9 Made from non combustible stone wool Pleasing reinforced smooth white cleanable surface Easy to fit using standard RockLink grid components Use virtually anywhere above 1800mm from finished floor level Technical advice relating to Rockfon s E3 & E4 solutions are available from the Rockfon Technical Helpline on i

38 4 ACOUSTIC SOLUTIONS FOR SCHOOLS MEETING APPROVED DOCUMENT E (E4) Acoustic performance for schools In the Secretary of State s view, the normal way of satisfying Requirements E4 of the Building Regulations is to demonstrate that all the performance sections in Section 1 of Building Bulletin 93 have been met. This bulletin guides architects, acousticians and building control officers through the process of the acoustic design of schools in the context of the various types of spaces and activities. It contains performance standards, calculation procedures, case studies on existing schools and an example submissions to the Building Control Body (BCB). Consult the experts In all but the simplest of projects it is advisable to appoint a qualified acoustic consultant at an early stage of the project, this is needed to check the design details to ensure that all spaces meet the performance standards including sound absorption in corridors, entrance halls and stairwells. This will enable the designer to submit a set of plans, construction details and calculations for each area of the school to the BCB. ROCKWOOL SOUNDPRO SOLUTIONS BETWEEN ROOMS Figures 3.9 (walls) and figures 3.14 and 3.16 (floors) of Bulletin 93 show airborne and impact sound insulation for some typical constructions. The following Rockwool constructions show the weighted sound reduction index Rw for masonry and plasterboard constructions for walls; and timber and concrete constructions for floors. This information will enable the acoustician to determine which constructions are capable of meeting the performance standards of section 1.1 of Bulletin 93. ROCKWOOL SOUNDPRO SOLUTIONS WALLS These solutions are selected to compliment the constructions shown in figure 3.9 of Bulletin 93 1 SOLUTION 1 Rw 41dB Studs: 50mm Metal C 600mm ctrs. Facings: One layer of 12.5mm standard Wallboard (8 Kg/m 2 ) both sides Insulation: 25mm Rockwool Acoustic Partition Slab NBS Plus Clauses: K10:115, K10:125 Report No: L Technical Data Nominal weight kg/m 2 Maximum height m Nominal thickness mm Fire resistance min 2 One layer of 12.5mm Lafarge E-check both sides SOLUTION 2 Rw 44dB Studs: 70mm Metal C 600mm ctrs. Facings: One layer of 12.5mm Lafarge E-check Wallboard (10 Kg/m 2 ) both sides Insulation: 67mm Rockwool Acoustic Partition Slab Report No: BTC 10190A Technical Data 95 67mm Acoustic Partition Slab Nominal weight kg/m 2 Maximum height m Nominal thickness mm Fire resistance min 38

39 3 Two layers of 15mm Lafarge db-check Wallboard both sides SOLUTION 3 Studs: 70mm Metal C 600mm ctrs. Facings: Two layers of 15mm Lafarge db-check Wallboard (26 Kg/m 2 ) both sides Insulation: 70mm Rockwool Flexi Based onreport No: BTC 10183A Technical Data Rw 57dB mm Flexi Nominal weight kg/m 2 Maximum height m Nominal thickness mm Fire resistance min 4 Two layers 15mm Lafarge db Check both sides SOLUTION 4 Rw 63dB Studs: 70mm Metal C 600mm ctrs. Facings: Two layers of 15mm Lafarge db Check (total 26 Kg/m 2 ) one side. Other side two layers of 15mm Lafarge db Check (total 26 Kg/m 2 ) fixed to resilient bars (spaced at 600mm ctrs). Insulation: 67mm Rockwool Acoustic Partition Slab Report No: BTC 10187A Technical Data mm Acoustic Partition Slab Lafarge resilient bars Nominal weight kg/m 2 Maximum height m Nominal thickness mm Fire resistance min 5 One layer of 15mm Lafarge Firecheck Wallboard both sides SOLUTION 5 Rw 53dB Studs: 146mm Metal C 600mm ctrs. Facings: One layer of 15mm Lafarge Firecheck Wallboard (12 Kg/m 2 ) both sides Insulation: 1 x 140mm or 2 x 70mm Rockwool Flexi between studs Report No: BTC 10193A Technical Data 176 One layer of 140mm or two layers of 70mm Flexi Nominal weight kg/m 2 Maximum height m Nominal thickness mm Fire resistance min 39

40 ROCKWOOL SOUNDPRO SOLUTIONS TIMBER FLOORS Constructions for existing timber floors airborne and impact insulation for some typical floor constructions. These solutions are selected to compliment the construction options shown in Fig 3.14 of Bulletin 93 SOLUTION 6 OPTION 4 Timber platform floor Airborne: Rw 59 db Impact: 57 L nw db Test Report ref. BTC 12397A 6 Rockwool SoundPro guidance specification 18mm t&g flooring grade chipboard on 15mm Lafarge dbcheck wallboard on 30mm Rockwool Rockfloor on 15mm OSB on 195 x 45mm timber 450mm ctrs 100mm Rockwool Flexi between joists Resilient bars fixed at right angles to 400mm ctrs. Ceiling finish, 2 layers of 15mm Lafrge dbcheck wallboard (26 Kg/m 2 ) 7 SOLUTION 7 OPTION 5 Timber platform floor Airborne: Rw 66 db Impact: 54 L nw db Laboratory test Report ref. L & 273 Airborne: Rw 48 db D ntw + C tr Impact: 58 db L ntw Site test Report No Rockwool SoundPro guidance specification 18mm t&g flooring grade chipboard on 15mm Lafarge dbcheck wallboard on 50mm Rockwool Rockfloor on 15mm OSB on 200 x 50mm timber 400mm ctrs 100mm Rockwool Flexi between joists Resilient bars fixed at right angles to 400mm ctrs. Ceiling finish, 2 layers of 15mm Lafrge dbcheck wallboard (26 Kg/m 2 ) 8 SOLUTION 8 OPTION 6 Timber batten raft floor Airborne: Rw 62 db Impact: 55 L nw db Test Report ref. BTC 12401A Rockwool SoundPro guidance specification 18mm t&g flooring grade chipboard on 15mm Lafarge dbcheck wallboard screw fixed to 45 x 45mm softwood 400mm ctrs. with 6mm Lafarge RAFT60 foam rubber tape bonded to underside laid on 15mm OSB with 50mm Rockwool Flexi between battens laid on 195 x 45mm timber 400mm ctrs 100mm Rockwool Flexi between joists Resilient bars fixed at right angles to 400mm ctrs. Ceiling finish, 2 layers of 15mm Lafrge dbcheck wallboard (26 Kg/m 2 ) More information 40 ifor further details visit our website at

41 ROCKWOOL SOUNDPRO SOLUTIONS CONCRETE FLOORS Construction heavyweight concrete floors airborne and impact insulation for a typical floor construction. These solutions are selected to compliment option 3 shown in Fig 3.16 of Bulletin SOLUTION 9 Airborne: Rw 55 db Impact: 55 db L nw Test Report ref. Robust Details Appendix D Rockwool SoundPro guidance specification Rockwool Slimfloor (FFT5 10mm Rockwool prebonded to 18mm t&g chipboard) on 10mm screed on 150mm precast hollow cored unit 300 Kg/m 2 SOLUTION 10 Airborne: Rw 57 db Impact: 53 db L nw Test Report ref. Robust Details Appendix D Rockwool SoundPro guidance specification 18mm t&g chipboard on 25mm Rockfloor on 10mm screed on 150mm precast hollow cored unit 300 Kg/m 2 SOLUTION 11 Airborne: Rw 59 db Impact: 50 db L nw Test Report ref. Robust Details Appendix D Rockwool SoundPro guidance specification 18mm t&g chipboard on 50mm Rockfloor on 10mm screed on 150mm precast hollow cored unit 300 Kg/m 2 SOUND INSULATION OF ROOFS Impact noise from rain on roofs Impact of rain on metal roofs can significantly increase the indoor noise level within buildings, resulting in noise radiating into working or habitable space below. Rain noise is therefore a potentially important noise source, which must be considered at an early point in the roof design. Approved Document E requires the construction of new school buildings to meet appropriate acoustic standards. The method of compliance is outlined by Building Bulletin 93 Acoustic Design of Schools produced by DfES (IBSN: ). This includes a requirement to minimise the noise of rainfall on lightweight roofs. Whilst rain noise is presently excluded from Section 1.1 of Building Bulletin 93, methods of control must nevertheless be included and justified to the Building Control Body. The solution is dependent upon the specific roof construction and may be provided by a combination of Rockwool insulation materials. When used within metal lightweight roof constructions the fibrous structure of Rockwool insulation provides very effective sound absorption. The use of Rockwool products within metal roof constructions will additionally reduce the resonance effect created by the impact of rain noise due to the provision of acoustic damping, which significantly enhances acoustic performance. At the time of print, a new laboratory test measurement standard for impact sound from rain on the roof, ISO/CD is under development. BRE Acoustics was commissioned by Rockwool Limited to undertake Rain noise testing on roof constructions using Heavy rain as defined in ISO/CD Flat Roof acoustic improvement The following flat roof constructions were tested By BRE Acoustics to measure sound intensity due to impact noise from rain. Single ply membrane, Mechanically fastened, 1.2mm Rockwool Hardrock Dual Density Roofing Boards, 150mm Vapour Control Layer (polythene) Profiled metal deck, 60mm deep, 0.7mm The same roof construction was tested including 85mm Urethane insulation board in place of Hardrock Dual Density. Results are detailed below. Sound intensity level (db) k 1.25k 1.6k 2k 2.5k 3.15k 4k 5k One-third octave band centre frequency (Hz) Rockwool HRDD Typical Urethane board Above: Comparison of sound intensity measurements of rain noise for Hardrock Dual Density Roofing boards and typical Urethane boards. Note: Lower sound intensity levels represent improved acoustic performance. Acoustic Test Reports No L/904/020 & L/904/021. Testing in accordance with BS EN ISO :2003 & ISO/CD (ISOTC43/SC2 N 0751 Dated ). 41

42 Acoustic control flat roofs Effective sound insulation is an essential requirement where commercial or industrial operations generate noise at levels, which could be harmful to the health or efficiency of the building occupants, or present an environmental nuisance. The control of noise pollution is an ever increasing problem. The solution tends to be specific to each building and is dependent on the type and source of the noise. Hardrock Dual Density Roofing Boards are proven to be the ideal acoustic insulation material for use in warm flat roof constructions. Sound absorption Sound reflection is often a problem experienced in buildings such as manufacturing plants, convention and sports halls. The use of Hardrock Dual Density Roofing Boards and Acoustic Infills in conjunction with perforated steel decking provides sound absorption within the building, thereby improving the environment for work and leisure. Above: Typical installation of Hardrock Dual Density Roofing Board on a profiled steel deck. The measurements indicate a significant acoustic improvement with respect to impact noise from rain using Rockwool Hardrock Dual Density Roofing Boards in comparison with urethane boards on lightweight metal roof constructions. Standing seam metal roofs acoustic improvement The following flat roof constructions were tested By BRE Acoustics to measure sound intensity due to impact noise from rain. Euroseam 400 aluminium standing seam, 0.9mm Rockwool Cladding Roll, 160mm Eurobar bracket & spacer system & Aluminium Halters Rockwool Acoustic Membrane 5 (2 layers) Rockwool RW3 Slab, 30mm (Between top hat system) Euroclad, 33mm deep profiled 0.7mm liner sheet For comparison purposes, a typical composite metal roofing panel including 80mm thickness of urethane insulation was also tested. Sound intensity level (db) k 1.25k 1.6k 2k 2.5k 3.15k 4k 5k One-third octave band centre frequency (Hz) Standing seam, including Rockwool See notes below Urethane composite roofing panel Above: Comparison of sound intensity measurements of rain noise for a standing seam system including Rockwool products and typical urethane composite roofing panel system Note: Lower sound intensity levels represent improved acoustic performance Due to the high level of acoustic performance provided by the Rockwool construction, it was not possible to obtain measurements at octave frequencies above 500 Hz Acoustic Test Reports No L/904/018 & L/904/022. Testing in accordance with BS EN ISO :2003 & ISO/CD (ISOTC43/SC2 N 0751 Dated ). Sound attenuation Noise intrusion from heavy traffic or aircraft can be reduced by using Hardrock Dual Density Roofing Boards as part of the roof system, creating a quieter ambience within the building. The product may alternatively be used to assist containment of the noise source within the same building. For High performance acoustic specifications, the use of a mass layer may be required. The combination of Hardrock Dual Density and Rockwool Acoustic Membrane results in improved sound insulation levels across the frequency range. Rockwool Acoustic Membrane Rockwool Acoustic Membrane consists of a flexible, high-density polymer mass layer with inherent acoustic damping properties. It is used to attain the highest acoustic performance levels for lightweight flat and built up metal roof constructions. Above: Rockwool Acoustic membrane within an aluminum standing seam system More information For further details visit our website at or see the Hardrock Dual Density and Rockwool Acoustic imembrane Data sheets. The measurements indicate a significant acoustic improvement with respect to impact noise from rain using Rockwool RW3 and Cladding Roll together with Rockwool Acoustic Membrane within a metal standing seam system in comparison with a typical urethane composite roofing panel. 42

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44 Rockwool Limited Pencoed. Bridgend. CF35 6NY imore information For further details visit our website at Technical Helpline Rockfon Limited 26/28 Hammersmith Grove, Hammersmith, London W6 7HA Technical advice relating to Rockfon s E3 & E4 solutions are available from the Rockfon Technical Helpline on i