i jb - wigan · 2019. 12. 18. · jb feb 09 wg no: 1 :50 1 :20 2 of 3 building control ' labc ....
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Purpose made 'Rafter Tray' to ensure cross ventilation
Eaves ventilation: 10mm continuous gap
High level air brick to ---1.i ventilate new cavity
Minimum 50mm cavity ---
Low level air brick to ---M ventilate new cavity
Flo,hlog to b, � -in satisfactory I r : High level vent tile to give equivalent 5mm gap - spacings fixed, and installed
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1 I to manufacturers specification
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Tyvec (or equivalent) breathable membrane
75 x 50mm C16 timber studwork
Minimum 75mm Kingspan (or equivalent)
500 gauge Visqueen DPM (or equivalent)
12.5mm plasterboard and skim
100mm mineral wool insulation laid between joists 170mm mineral wool insulation laid at right angles above joists
Minimum 22mm T&G floor boards - moisture resistant grade to utility, bathroom, kitchen etc.
1200 gauge Visqueen DPM (or equivalent) on existing concrete garage floor (if suitable) 100mm Kingspan
(or equivalent) 50 x 100mm C16 treated timber floor
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Visqueen DPM lapped and taped up and around floor joists held in place by studding sole plate
Detail:
New floor meets new stud
wall sole plate
pro Jee
Building
Control �' LABC
garage conversion detail
JB Jan 09wg no:
1 :20 1: 10 1 of 3
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Cavity construction: 102.5mm facing brickwork
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Walls properly bonded (crocodile or similar wall ties)
85mm fully filled cavity with Dritherm (or equivalent) 100mm Thermalite (or equivalent) internal blockwork Stainless steel wall ties at 900mm horizontal and 450mm vertical centres, maximum 300mm at reveals
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Detail: Detail:
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Ground Floor Plan First Floor Plan
NB Slab thickness to be confirmed on site and deemed satisfactory to build off by LABC Officer
NB The installation of insulation and ventilation to existing flat roofs is difficult, compliance with the regulations may best be achieved by constructing a warm roof. It is accepted that this could cause flashing problems but is probably the only realistic way of achieving compliance. On the plus side, properly constructed warm roofs are far more durable than cold roofs.
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500 gauge Visqueen DPM (or equivalent) trapped between exiting pier and and insulation board
Minimum 25mm Kingspan (or equivalent) to prevent cold bridging on piers
12.5mm plasterboard to run flush
Detail:
Existing garage pier
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Synthaprufe (or equivalent) tanking system with 1200 gauge Visqueen DPM (or equivalent) laid over the top extending minimum half way into new cavity wall and
De ta i l : returned to stud cavity
New cavity construction in
existing garage door opening
NB If no direct external access in available off new extension and where not already present. works wl'll require mains wired smoke detection in all circulation areas, interlinked with battery back-up, manufactured installed and commissioned in accordance with Approved Document Band BS 5446: pt 1: 2000
proJec
garage conversion detail
JB Feb 09 wg no:
1 :50 1 :20 2 of 3
Building
Control �' LABC
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Building
Control �' LABC