HELP PLEASE - What Loft Insulation
On 26 Jan, 16:41, GMM wrote:
Doesn't the
plastic wrap essentially make a barrier to vapour dispersal compared
with bog-standard fibreglass?
No, it's perfed and porous. The rolls in our local place have a
different barrier on each side, so the lower side is moderately
impermeable, the upper has holes all over it.
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