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    Fitting DPM when walls are already built

    Thanks oldun I thought screed had to be 65 - 75 mm, but an 8:1 pug/biscuit/dry mix is fine at 25mm. I like the idea because it would warm up and cool down quicker than a full screed. Is that not the case? Related to the pug mix, how wud I put the final flooring on. I'd prefer tiles and...
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    Fitting DPM when walls are already built

    Thanks John I will be putting the concrete slab over the dpm, then the insulation and then a 2 or 3 cm pug mix enclosing the UFH pipes. I'll put 25mm thick celotex upstand around the perimeter to counter thermal bridging.
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    Fitting DPM when walls are already built

    Where do I stick it on the wall? Is it anywhere higher than the DPC, or do I mastic at the DPC level? Should I use tape to join the sheets of DPM with an overlap or is mastic best for that as well? Thanks
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    Fitting DPM when walls are already built

    Hi I am ready to put the DPM down in my extension, but the walls have already been built, so I can't tuck it over the DPC. I know I can tape it to the wall, but I don't know how far up the wall (and what sort of tape). Can anyone help please? Do I need to use double sided tape or tape over...
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