WWilts Posted February 23, 2022 Share Posted February 23, 2022 (edited) Internal block wall going down to foundations. Junction with floor. (pic). How to damp proof the internal block wall? (circled in pic). Already built: Hardcore / blinding / Polythene DPM lapped to DPC / Concrete slab To be added: DPM on top of slab / Celotex insulation / VCL / Sand cement screed (perimeter insulation) Edited February 23, 2022 by WWilts Link to comment Share on other sites More sharing options...
tonyshouse Posted February 23, 2022 Share Posted February 23, 2022 Black Jack painted on , either oil or waterbased emulsion, careful work with poly and rape, self adhesive dpm, all tricky. I would use folded thick poly 1 Link to comment Share on other sites More sharing options...
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