Plasterboarding over celotex

Joined
4 May 2011
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Location
Bristol
Country
United Kingdom
Hi

Have just completed a conservatory and am now starting the plasterboarding etc.... I'm wanting to insulate the internal double skin wall as I have a load of 40mm celotex, and then plaserboard over to help keep the ufh in..... which is the best way?? 50mm timber, celotex in between, then board...... or dot and dab celotex, then board..... baton, celotex on top, breathable membrane, then board. Does there have to be a gap btween the celotex and concrete block, does membrane have to be used to stop the sweating..... Totally lost with it all, any info would be great

Cheers
 
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