Hi all,
My vaulted pitched roof is made up of 200mm rafters. Tiles on top with a breathable membrane, 100mm airgap, then 100mm foil backed GA4000. I was going to put Celotex PL4000 underneath. Do I need to add a vapour control layer in this setup?
Thanks in advance
Paul
My vaulted pitched roof is made up of 200mm rafters. Tiles on top with a breathable membrane, 100mm airgap, then 100mm foil backed GA4000. I was going to put Celotex PL4000 underneath. Do I need to add a vapour control layer in this setup?
Thanks in advance
Paul