i am currently doing a garage conversion and at present have made up stud work and filled the internals with celotex and filled any gaps with expanding foam and taped up all joints. Now do i need a vappour barrier or am i ready to plasterboard? all gaps in the walls and ceilings were filled fully.what would the benefits be of a extra vapour barrier?
do i need a vapour barrier?
- Thread starter Tedbow
- Start date
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Use foil back plasterboards, water vapour is fairly tenacious stuff.
The celotex is not breathable, but the studs are. Without a VCL the concern is the moisture may be forced through the studs, or any gaps between the insulation and studs (remember the timber may dry and shrink).
Personally I prefer a proper polythene sheet over vapour backed plasterboard, as you can properly lap and seal it with itself, and DPM around openings and floors, and openings such as for sockets.
Taping over the joints may technically be enough, but there is no downside to a proper VCL, and it's inexpensive.
Personally I prefer a proper polythene sheet over vapour backed plasterboard, as you can properly lap and seal it with itself, and DPM around openings and floors, and openings such as for sockets.
Taping over the joints may technically be enough, but there is no downside to a proper VCL, and it's inexpensive.
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