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Just a wee update on this. Since my last post I've been talking to a lot of other builders in my area (Northern Ireland) and I haven't come across any who put the dpc at finished floor level. They all do it my way. I've checked with building control as well and they're happy with it. So I will...

I'm not getting through to you at all. Let me try and explain the way I would do it. You build the walls up to subfloor height. Then you lay the subfloor concrete or slabs or block and beam as the case may be. Then you put the dpc down on the outer and inner leaves of the walls so that the dpc...

I can't see how that would work. In order for it to be lapped within the wall the dpm would have to be laid before the wall was built. So you would be walking over it, dropping blocks on it etc the whole time while the house was being built. I don't think I'll be doing that. I found this on a...

I'm not with you Woody. Are you talking about the dpm or the dpc. There's no problem folding the dpm up the walls, but if you have a dpc built into the wall so that it extends inwards 5 or 6 inches then at the corner it's going to stay horizontal unless you cut it surely.

I've seen builders putting the dpc at subfloor height which seemed to make sense to me as it was at the right level to achieve a good overlap with the dpm under the finished floor. Now I've noticed that architects seem to show the dpc at finished floor height which seems a lot more akward as, in...