How to make this area damp proof?

[WWilts]

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

[tonyshouse]

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