S
SJPurdy
The best solution is to take out the old floor completely. Then replace with a new floor incorporating insulation and DPC. If the full curing time before tiling is then a problem there are green screed adhesives which allow tiling before the full cure has taken place. If still wanting electric under-tile heating then I'd recommend still using 10mm insulation boards on top of the screed to give better efficiency.
The walls need insulating too otherwise you will always have a condensation problem. I'd start off by looking at e.g. the Celotex website to check out how the suggest to do it.
The walls need insulating too otherwise you will always have a condensation problem. I'd start off by looking at e.g. the Celotex website to check out how the suggest to do it.
