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Thanks for your input. The edges will be well compacted and the 4:1 SBR mix should fill all gaps to provide support. I'm not too concerned as the slab seems fairly stable. Yes all walls were damp. However, the external walls were by far the worst. Because the internal walls have a second DPC...

Hi John, The concrete is about 2" thick. Yes, ideally the floors would all be dug out and replaced. However, that is not currently an option. Cheers

Thanks, yes I plan to do exactly that once the floor to wall detail has been completed. I will be creating a sandwich of Ardex NA screed followed by Ardex 1C DPM (epoxy) and a final Ardex NA screed

Good morning, I am looking for some advice regarding my proposed solution to repair a 1920's concrete floor. The internal concrete floor is about 2 courses above the DPC. Consequently, the DPC was being bridged causing damp. I have dug a 6" trench around the perimeter of the room, to...