"Andrew Gabriel" andrew@a17 wrote in message
.. .
In article ,
"Brian Reay" writes:

But, the foil will act as a vapour barrier, all be it an imperfect one,
which is a worthwhile reason to do it.

It's not.
The permiability of the plasterboard is very much lower than
the rate moisture escapes from even a poorly ventilated loft.

So why do building regs now specify foil backed plasterboard?

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73
Brian, G8OSN
www.g8osn.org.uk