April 16, 20224 yr Author 18 hours ago, Simplysimon said: scottish building regs, cold deck has lots of issues so it's warm deck up here Interesting. I know some of the pro-warm deck arguments, and they all seem sensible (I'd have gone warm deck myself under different circumstances) but am not familiar with such anti-cold deck arguments that would make the good folk of Scotland ban them. Is it a different reading of the same technical pros and cons, or is it that parts of Scotland literally have a different climate to England that results in such a divergence in the regs? I'm currently getting my head around the apparent conflict between my cold deck and a vapour barrier, by the way!
April 16, 20224 yr vcl on the warm side of the insulation in both cases. with cold deck if the vcl is not intact then moisture will condense in the roof space, with a warm deck the roof space is warm, so less condensation risk and less risk of rot.
April 16, 20224 yr Author 3 hours ago, Simplysimon said: vcl on the warm side of the insulation in both cases. with cold deck if the vcl is not intact then moisture will condense in the roof space, with a warm deck the roof space is warm, so less condensation risk and less risk of rot. Absolutely, the case for warm deck is clear and convincing. However, a cold deck van work perfectly well with adequate ventilation.
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