I'm replacing a suspended timber floor with a concrete floor. This is partly because the current floor has rot but mainly because I want to install underfloor heating.
Materials (in order from ground up) will be hardcore, blinding, DP membrane, insulation, concrete, screed with heating pipes embedded in it and ceramic tiles.
I will have insulation around the perimeter, sitting on top of the DP membrane and ending below the tiles.
The walls do NOT have a DPC (it is an old victorian building with solid stone walls).
My question is, how do I detail the joining of the slab DP with the walls?
I plan to carry the slab DP membrane up the walls, behind the perimeter insulation to 50mm aboive the finished tiled surface, hiding it behind the skirting (which will sit on top of the tiles).
Is this the best approach, or should I strip off plaster and carry it much higher (how much)?
There is no evidence of rising damp in the walls.