"David" wrote in message
...


As a consequence of Part L, of the regs people give greater consideration
to
the underfloor insualation but the emphasis is not always there that if
you
do this then the vapour barrier is essential, it needs eduction of both
the
building insectors and the builders, who need to ensure that care is taken
to ensure an intact and well sealed membrane.

Question to all - if one is going to put in a membrane, would it be better
on top or underneath the floorboards ?

Obviously underneath is required if you want to show the floorboards but if
you have carpets or some other covering it seems to me that putting it on
top of the floorboards would keep moisture properly out whereas putting it
underneath would still allow condensation on the joists and underside of the
boards - and then keep it there !

Any thoughts ?