Advice on insulating ceiling of extension.....

[Owain]

Perhaps B-i-L could get you another one next week? I'm sure the site will be "throwing out" some more "spares". ;-)

Owain

[fred]

In article , [e-mail] writes

You don't want airflow under the insulation, PB should be in direct contact with the Celotex.

[marvelous]

You are an idiot!

Water vapour passes through plasterboard like its not there. Then it condenses into liquid on cold surfaces like rafters and wooden sarkin and causes rot.