Separating walls. Countryside Properties, Lock 38, Stoke-on-Trent

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1 Separating walls Countryside Properties, ock 8, Stoke-on-Trent

Separating Masonry walls Walls Separating Masonry wallswalls Approved Document E 200 Clause E Approved Document 200 - Requirements Walls >> Separating Walls >> Separating Masonry Walls walls

Clause E of Approved Document E stipulates the following: Dwelling-houses, flats and rooms for residential purposes shall be designed and constructed in such a way that they provide reasonable

Approved Document E 200 Performance standards The following table is adapted from Approved Document E and highlights the minimum performance standards required for separating walls.

Contrary to previous assumptions, Approved Document will no longer treat separating cavity walls as a zero heat loss element, due to the thermal bypass effect The heat loss can be reduced by measures

Table - U-values for party walls Party wall construction U-value (W/m 2 K) Solid 0.0 Unfilled cavity with no effective edge sealing 0.

2 Separating Masonry walls Walls Separating Masonry wallswalls Approved Document E 200 Clause E Approved Document Requirements Walls >> Separating Walls >> Separating Masonry Walls walls Separating wall constructions must be built to comply with Building Regulations Approved Document E clause E and are subject to Pre-Completion Testing unless a Robust Detail construction is used. Clause E of Approved Document E stipulates the following: Dwelling-houses, flats and rooms for residential purposes shall be designed and constructed in such a way that they provide reasonable resistance to sound from other parts of the same building and from adjoining buildings. Approved Document E 200 Performance standards The following table is adapted from Approved Document E and highlights the minimum performance standards required for separating walls. Please note that the requirement is for airborne sound insulation only. Contrary to previous assumptions, Approved Document will no longer treat separating cavity walls as a zero heat loss element, due to the thermal bypass effect The heat loss can be reduced by measures that restrict air movement through the cavity, either by means of fully-filling the cavity and/or by providing effective sealing around the perimeter. Table - U-values for party walls Party wall construction U-value (W/m 2 K) Solid 0.0 Unfilled cavity with no effective edge sealing 0.5 Unfilled cavity with effective edge sealing around all exposed edges and in line with insulation layers in abutting elements 0.2 A fully filled cavity with effective sealing at all exposed edges and in line with insulation layers in abutting elements 0.0 Walls >> Separating Masonry walls Walls Dwelling-houses and flats - performance standards for separating walls that have a separating function Airborne sound insulation D ntw + Ctr db Inpact sound insulation nt, w db New build separating walls 45 - Rooms for residential purposes - performance standards for separating walls that have a separating function Airborne sound insulation D ntw + Ctr db Inpact sound insulation nt, w db New build separating walls 4 - Roof oft Space oft Insulation Roof oft Space oft Insulation What is the thermal bypass effect? Where outside air is able to flow into the separating wall cavity a cold zone is created which results in heat flux through the wall sections on either side. The extent of air flow and heat flux will depend on external conditions such as wind and temperature and also on the setting up of a ventilation stack effect caused by warmed air rising in the cavity to be replaced by cooler air drawn in from outside. The air movements involved can be significant and, if no steps are taken to restrict flows, the resulting heat losses can be large. How to comply Robust Details - All Robust Details have been approved as capable of meeting or exceeding the E performance criteria, providing they are built correctly. Following these specifications means the construction can be exempt from undertaking Pre Completion Testing. The Robust Details scheme applies to new-build houses and apartments only. Plots must be registered with Robust Details imited prior to construction. NB It is important to check the compatibility of the Robust Detail separating walls with the Robust Detail separating floors. Please refer to for more information. Manufacturers Proprietary Systems - These constructions are British Gypsum Approved Systems, which, provided they are built correctly, have the potential to achieve E performance criteria required for new-build houses and apartments separating floor constructions and new-build rooms for residential purposes. Pre-Completion Testing must be executed on a 0% sample (by type) to demonstrate compliance. st Floor Ground Floor st Floor Ground Floor Isover Party Wall Roll Isover Party Wall Roll is a full-fill glass mineral roll for use in 75mm, 00mm, 25mm and mm separating wall cavities. The product meets the full-fill requirement to deliver a zero U-value for separating party walls as defined in Building Regulations (Approved Document A, Table ). See page 56 for Separating Wall Solutions 29 and 0 and also page 97 for further product information The Within category 7 of the, Health and Wellbeing, section states that up to four credits are available for achieving higher standards of sound insulation than those given in Building Regulations Approved Document E and demonstrating it by using either Pre-Completion Testing or Robust Details. This stamp highlights construction details which have the potential to achieve the number of credits stated, provided they are built correctly. Section 5 - Scotland Section 5 (Scotland) stipulates a minimum airbourne sound performance for separating walls of 56 D ntw db. Please be aware that Scottish Regulations do not recognise a correction factor for low frequency sound. Airbourne sound insulation D ntw db Zero U-values Can be used as part of a solution to achieve Zero U-value solutions This stamp highlights construction details which have potential to achieve a zero U-value, provided they are built correctly. Scotland Scottish regulations also recognise that separating walls should no longer be treated as zero heat loss. Section 6 stipulates the following: To limit heat loss, a separating wall cavity should have effective perimeter sealing around all exposed edges and in line with insulation layers in abutting elements which separate the dwelling from another building or from an unheated space. Further reduction in heat loss can be achieved where the cavity separating wall is also fully filled with a material that limits air movement. Separating walls Isover Technical Advice - Tel: Isover technical advice: isover.enquiries@saint-gobain.com 49

3 E-WM-24 E-WM-24 Separating walls Separating walls Walls >> Separating walls Separating wall solutions The separating wall solutions detailed in this section of the guide are Robust Detail or British Gypsum Approved Systems. These constructions have been tested and proved to meet or exceed the sound insulation values given in the table on page 49. Please note that for British Gypsum Approved Systems Pre-Completion Testing must take place to demonstrate compliance. Separating wall solutions (Robust Details) E-WM-8: Masonry ightweight aggregate blockwork (5mm Isover 5 and Gyproc plasterboard) E-WM-4: Masonry ightweight aggregate blockwork with 00mm cavity (5mm Isover 5 and Gyproc plasterboard) E-WM-5: Masonry aircrete blockwork (5mm Isover 5 and Gyproc plasterboard) E-WM-7: Masonry ightweight aggregate blockwork (Isover Party Wall Roll and Gyproc plasterboard) E-WM-20: Masonry ightweight aggregate blockwork (Isover Party Wall Roll and Gyproc plasterboard) E-WM-24: Masonry Masonry aircrete aggregate blockwork (Isover Party Wall Roll and Gyproc plasterboard) E-WT-: Twin Timber without sheathing board E-WT-2: Twin Timber with sheathing board Airborne sound db (D ntw + Ctr) - site test result Separating wall solutions (British Gypsum Approved) GypWall classic With Gypframe 46 AS AcouStuds GypWall classic With Gypframe 46 AS AcouStuds GypWall quiet GypWall quiet with additional service zone created with Gypyner universal Airbourne sound transmission (R w + Ctr db) - lab test result Walls >> Separating 2 E-WS-: Twin Steel E-WS-2: Steel (Non-loadbearing) Isover Products Isover separating wall solutions incorporate the following Isover products Isover Party Wall Roll Isover 5 Isover Acoustic Partition Roll E-WS-: Twin Steel Modular build steel frame 4 E-WS-4: Twin Steel Isover Acoustic Slab Isover Timber Batt Isover Timber Party Wall Roll 5 Masonry Walls Gypyner universal lining 59 Isover technical advice - Tel: Isover technical advice: isover.enquiries@saint-gobain.com 5

4 Separating Masonry masonry Walls walls Separating Masonry masonry Walls walls Walls Walls >> Separating >> Separating Masonry masonry Walls 2 E-WM-8: Masonry ightweight aggregate blockwork (5mm Isover 5 and Gyproc plasterboard) Overall construction nominal width 20mm ightweight aggregate cavity block wall, minimum 00mm blocks (density - 600kg/m³) Minimum 75mm cavity between leaves Isover 5 in the cavity Nominal 8mm (minimum 6mm) Gyproc Soundcoat Plus C 25 E-WM-5: Masonry Aircrete blockwork (5mm Isover 5 and Gyproc plasterboard) Overall construction nominal width 20mm Aircrete cavity block wall, minimum 00mm blocks (density kg/m³) Minimum 75mm cavity between leaves Isover 5 in the cavity Drylined with 2.5mm Gyproc WallBoard ten, 5mm Gyproc WallBoard or 2.5mm Gyproc SoundBloc dot and dabbed (Driyner basic system) B Walls >> Separating Masonry masonry Walls Drylined with 2.5mm Gyproc WallBoard ten, 5mm Gyproc WallBoard or 2.5mm Gyproc SoundBloc dot and dabbed (Driyner basic system) 24 E-WM-4: Masonry ightweight aggregate blockwork with 00mm cavity (5mm Isover 5 and Gyproc plasterboard) Overall construction nominal width 45mm ightweight aggregate cavity block wall, minimum 00mm blocks (density - 600kg/m³) Minimum 00mm cavity between leaves Isover 5 in the cavity Drylined with 2.5mm Gyproc WallBoard ten, 5mm Gyproc WallBoard or 2.5mm Gyproc SoundBloc dot and dabbed (Driyner basic system) C s 26 E-WM-7: Masonry ightweight aggregate blockwork (Isover Party Wall Roll and Gyproc plasterboard) Overall construction nominal width 20mm ightweight aggregate cavity block wall, minimum 00mm blocks (density 600kg/m³) or Plasmor Aglite Ultima 0 kg/m cavity block wall Minimum 75mm cavity between leaves Minimum 75mm Isover Party Wall Roll in the cavity Drylined with dot and dabbed 2.5mm Gyproc WallBoard ten, 5mm Gyproc WallBoard or 2.5mm Gyproc SoundBloc B Zero U-values Can be used as part of a solution to achieve 52 Isover technical advice - Tel: Isover technical advice: isover.enquiries@saint-gobain.com 5

5 E-WM-24 E-WM-24 Separating masonry walls Separating masonry walls Walls >> Separating masonry 27 E-WM-20: Masonry ightweight aggregate blockwork (Isover Party Wall Roll and Gyproc plasterboard) Overall construction nominal width 45mm ightweight aggregate cavity block wall, minimum 00mm blocks (density 600kg/m³) Minimum 00mm cavity between leaves Minimum 00mm Isover Party Wall Roll in the cavity Drylined with dot and dabbed 2.5mm Gyproc WallBoard ten, 5mm Gyproc WallBoard or 2.5mm Gyproc SoundBloc Zero U-values Can be used as part of a solution to achieve B 29 Masonry walls Gypyner universal lining Core masonry element mass per unit area minimum 200Kg/m², e.g. 00mm high density aggregate blocks Gypyner universal wall lining to one side of wall with minimum 85mm cavity (framing at 600mm centres) ined with double layer of 2.5mm Gyproc SoundBloc, mm Isover Acoustic Partition Roll (APR 200) in the cavity Other side lined with either 2.5mm Gyproc WallBoard on the Driyner basic system or mm Thistle plaster finish Nominal width 22mm (drylined) or 22mm (plastered) 59dB R w + Ctr PSR B Rw 66dB Walls >> Separating masonry 28 E-WM-24: Masonry Masonry aircrete blockwork (Isover Party Wall Roll and Gyproc plasterboard) B 0 E-WT-: Timber frame Without sheathing board 60mins BS A+ Aircrete cavity block wall, minimum 00mm blocks (density kg/m ) Minimum 00mm cavity between leaves Minimum 00mm Isover Party Wall Roll in the cavity Overall construction nominal width 00mm Cavity width minimum 240mm, gap of minimum mm between frames 90mm Isover Timber Batt 40 positioned between the studs in each timber frame Drylined with 2.5mm Gyproc WallBoard dot and dabbed (Driyner basic system) - Inner ayer of 9mm Gyproc Plank, outer layer of 2.5mm Gyproc WallBoard each side Double layer of 5mm Gyproc SoundBloc each side, Zero U-values Can be used as part of a solution to achieve Double layer of 5mm Gyproc Fireine each side, Inner layer of 9mm Gyproc Plank, outer layer of 2.5mm Gyproc Fireine each side Isover technical advice - Tel: Isover technical advice: isover.enquiries@saint-gobain.com

6 Separating timber frame walls Separating steel frame walls Walls >> Separating timber frame E-WT-2: Timber frame With sheathing board Overall construction nominal width 00mm Cavity width minimum 240mm, gap of minimum mm between frames Minimum mm gap between sheathing panels 90mm Isover Batt 40 positioned between the studs in each timber frame 60mins BS A+ or A- E-WS-2: Steel frame (non-loadbearing) Overall construction nominal width 2mm Minimum cavity width 90mm Gypframe I Studs minimum 60mm depth (no bracing between leaves) 00mm Isover Acoustic Partition Roll (APR 200) positioned between the frames D - Inner layer of 9mm Gyproc Plank, outer layer of 2.5mm Gyproc WallBoard each side - Double layer of 5mm Gyproc SoundBloc each side, - Double layer of 5mm Gyproc Fireine each side, - Inner layer of 9mm Gyproc Plank, outer layer of 2.5mm Gyproc Fireine each side Depending on sheathing board specified. Please refer to for further information - Double layer of 5mm Gyproc SoundBloc each side (for 90 minutes BS and EN ) - Double layer of 5mm Gyproc SoundBloc each side overboard with one layer of 2.5mm Gyproc Fireine each side (for 20 minutes BS and EN fire resistance) NB: Fully-fill cavity with Isover Timber Party Wall Roll to help achieve a zero U-value wall 2 E-WS-: Steel frame 60mins BS A+ 4 E-WS-: Steel frame Modular build steel frame 60mins BS B or C 2 For use in lightweight steel frame housing or flats / apartments Only for use in lightweight steel frame housing or flats / apartments Minimum cavity width 200mm Overall construction nominal width 264mm oadbearing studs Minimum 72mm or 00mm loadbearing studs Overall construction nominal width 26mm Minimum 40mm gap between sheathing panels mm Isover Batt 2 positioned between the frames 25mm Isover Acoustic Partition Roll (APR 200) between the studs in each frame - Inner layer of 9mm Gyproc Plank, outer layer of 2.5mm Gyproc WallBoard each side - Double layer of 5mm Gyproc SoundBloc each side Subject to manufacturers substantiation based on their loadbearing stud Minimum 75mm minimal Isover TS48 Slab (45Kg/m³) positioned between the studs - 72mm studs - double layer of 5mm Rigidur h - 00mm studs - double layer of 2.5mm Rigidur h Depending on sheathing board specified. Please refer to for further information 56 Isover technical advice - Tel: Isover technical advice: isover.enquiries@saint-gobain.com 57

7 Separating steel frame walls Separating steel frame walls 5 E-WS-4: Steel frame Only for use in lightweight steel frame housing or flats / apartments Minimum cavity width 2mm Overall construction nominal width mm Minimum 75mm loadbearing C studs 60mins BS A s 7 GypWall classic With Gypframe 46 AS AcouStuds Pre-Completion Testing - British Gypsum Approved System Overall construction nominal width 208mm Gypframe 46 AS AcouStuds at 600mm centres mm Isover Acoustic Partition Roll (APR 200) in the cavity ined with a double layer of 5mm Gyproc SoundBloc each side 57dB 90mm Isover Timber Batt 2 positioned between the frames - Inner layer of 9mm Gyproc Plank, outer layer of 2.5mm Gyproc WallBoard each side - Double layer of 5mm Gyproc SoundBloc each side Subject to manufacturers substantiation based on their loadbearing stud ined with a double l ayer of 5mm Gyproc Duraine for 20 minutes PSR A206A255 6 GypWall classic With Gypframe 46 AS AcouStuds 8 GypWall quiet 56dB 5dB Overall construction nominal width 208mm Overall construction nominal width 200mm Gypframe 46 AS AcouStud at 600mm centres mm Isover Acoustic Partition Roll (APR 200) in the cavity ined with a double layer of 5mm Gyproc SoundBloc each side Two frames of 48mm Gypframe C Stud at 600mm centres, cross braced at 200mm centres Cavity width of 40mm mm Isover Acoustic Partition Roll (APR 200) positioned between the frames ined with a double layer of 5mm Gyproc Duraine for 20 minutes PSR A206A24 ined with a double layer of 5mm Gyproc SoundBloc each side ined with a double layer of 5mm Gyproc Fireine for 20 minutes PSR A26009/ Isover technical advice - Tel: Isover technical advice: isover.enquiries@saint-gobain.com 59

Separating steel frame walls Separating steel frame walls 9 GypWall quiet Pre-Completion Testing - British Gypsum Approved System Overall construction nominal width 2mm Two frames of 48mm Gypframe C

8 Separating steel frame walls Separating steel frame walls 9 GypWall quiet Pre-Completion Testing - British Gypsum Approved System Overall construction nominal width 2mm Two frames of 48mm Gypframe C Stud at 600mm centres, cross braced at 200mm centres Cavity width of 90mm 75mm Isover Acoustic Slab positioned between the frames ined with a double layer of 5mm Gyproc SoundBloc each side ined with a double layer of 5mm Gyproc Duraine for 20 minutes 57dB PSR A260 R w 6dB 4 With additional service zone created with Gypyner universal 54dB Base separating wall, A wall lining with: Minimum 70mm cavity Minimum mm Isover Acoustic Partition Roll (APR 200) in the cavity Single layer of 5mm Gyproc SoundBloc installed on one or both sides of the base construction (for base construction refer to ) This solution can be used without lowering the acoustic performance of dB 5dB 20mins BS Overall construction nominal width 48mm Overall construction nominal width 48mm 70mm Gypframe C Studs at 600mm centres with Gypframe RB Resilient Bar at 600mm centres fixed to one side of the studs 70mm Gypframe C Studs at 600mm centres with Gypframe RB Resilient Bar at 600mm centres fixed to one side of the studs mm Isover Acoustic Partition Roll (APR 200) positioned in the cavity mm Isover Acoustic Partition Roll (APR 200) positioned in the cavity ined with a double layer of 5mm Gyproc SoundBloc each side ined with a inner layer of 5mm Gyproc Fireine and an outer layer of 5mm Gyproc Duraine ined with a double layer of 5mm Gyproc Duraine for 20 minutes PSR A6009 PSR Q Isover technical advice - Tel: Isover technical advice: isover.enquiries@saint-gobain.com 6

Separating steel frame walls 4 Pre-Completion Testing - British Gypsum Approved System ( 45 db D ntw + Ctr) Overall construction nominal width 200mm Two frames of Gypframe 48 I I Studs at 600mm

9 Separating steel frame walls 4 Pre-Completion Testing - British Gypsum Approved System ( 45 db D ntw + Ctr) Overall construction nominal width 200mm Two frames of Gypframe 48 I I Studs at 600mm centres Cavity width of 40mm wide mm Isover Acoustic Partition Roll (APR 200) positioned in the cavity 58dB R w 66dB ined with a double layer of 5mm Gyproc SoundBloc each side A26D4 44 Pre-Completion Testing - British Gypsum Approved System 62dB R w 70dB Overall construction nominal width 2mm Two frameworks of Gypframe 60 I I Stud Cavity width of 90mm wide 00mm Isover Acoustic Partition Roll (APR 200) in the cavity ined with a double layer of 5mm Gyproc SoundBloc each side A Isover technical advice - Tel:

WORK, REST AND PLAY ISOVER MAKES IT POSSIBLE.

Quiet Living WORK, REST AND PLAY ISOVER MAKES IT POSSIBLE. Isover s built in sound control. Simply building to the minimum sound standards outlined in the Building Regulations won t provide the comfort