Redbeard Posted Saturday at 14:27 Share Posted Saturday at 14:27 On 30/10/2024 at 14:41, Aldrige63 said: I actually just spoke to the builder and he tells me it's going to be a warm roof. So there's another layer going on top of what is already there. That's reassuring. So currently from bottom up there is timber frame. OSB flat on top of the timber frame. Breathable membrane flat on top of the OSB. And he tells me there will be insulation on top of this and......I'm not sure of the next bits but he said it's a warm roof? But you want a vapour control layer (VCL) on the warm side of the insulation, so where you say 'Breathable membrane flat on top of the OSB' wants to be a VCL, not a breathable membrane, in my view. Link to comment Share on other sites More sharing options...
saveasteading Posted Saturday at 14:34 Share Posted Saturday at 14:34 Builders who are ignorant of their subject do not do research. No chance of the wrong unz being on here. Link to comment Share on other sites More sharing options...
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