K
kampc8856
Has anyone had a problem with porcelain tiles fracturing along the join lines of the underlying plywood. A warmfloor solution heating mat was also installed. The floorboards were sound and I used 18mm ply, screwed at 6 inch intervals. A good job I thought but still the tiles cracked. Is it possible that the plywood expanded when heated, causing raised edges on the ply, resulting in the tiles cracking. I have heard that a DITRA uncoupling membrane can be used to prevent the transfer of stresses to the tiles. Any view, thoughts, solutions would be much appreciated.