I have seen laminate plasterboards (i.e. with insulation attached) with integrated vapour check/barrier. However I have also seen them without the vapour barrier and in fact I can get some of these cheap at the moment.
I have been advised that I can put a poly sheet vapour barrier on the cold side of the insulation (i.e. between timber battens and laminate) but this goes against what I thought was proper - I always thought the vapour barrier should be on the warm side of the insulation.
Assuming I have been ill-advised is there anything I can do to stop moisture penetration? Would using a drywall sealer on top of the plasterboard work? I suppose I could add a poly sheet vapour barrier on top of the plasterboard then add another layer of plasterboard but this will add to the overall thickness which I am reluctant to do.
Won't fixing the whole lot to timber battens with screws mean that the vapour barrier is compromised anyway? It is phenolic insulation which i understand is good at keeping moisture penetration localised. Any comments?
I have been advised that I can put a poly sheet vapour barrier on the cold side of the insulation (i.e. between timber battens and laminate) but this goes against what I thought was proper - I always thought the vapour barrier should be on the warm side of the insulation.
Assuming I have been ill-advised is there anything I can do to stop moisture penetration? Would using a drywall sealer on top of the plasterboard work? I suppose I could add a poly sheet vapour barrier on top of the plasterboard then add another layer of plasterboard but this will add to the overall thickness which I am reluctant to do.
Won't fixing the whole lot to timber battens with screws mean that the vapour barrier is compromised anyway? It is phenolic insulation which i understand is good at keeping moisture penetration localised. Any comments?
