Jilly Posted January 20, 2020 Share Posted January 20, 2020 I'm researching options. We are converting a stable with raft and slab foundations. It needs underpinning. A builder we like has suggested cutting out the raft to put insulation/DPC/.UFH etc etc in Structural engineer has suggested (at my behest, because intuitively it looks like a good idea) building over the top, but in that case how do the layers work? Could damp become an issue? Link to comment Share on other sites More sharing options...
ToughButterCup Posted January 20, 2020 Share Posted January 20, 2020 1 hour ago, Jilly said: ... Could damp become an issue? The answer is in the detail. And you don't have that yet. Get a design - publish it here and let the Commentariat masticate it for a while. You'll soon have too much information Link to comment Share on other sites More sharing options...
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