Revisions log for Answer #566

I don't think anyone here can seriously answer this question since no one knows what the substance is or the construction of the floor.

Does it have a wallboard? Are there floorboards? Is there insulation under the screed? Only a specialized company can tell you that.

If there is a screed, there is the possibility of milling sections of the floor with underfloor heating for pipes. But this will not be cheap.