Just had another enquiry, Cracked tiles on underfloor heating...no membrane. floor has only been laid for 7 months. Asked customer if floor screed was dry, he said the builder tiled it one week after the screed was laid!! Was the underfloor heating commissioned before tiling...No it wasn't connected!! Mentioned membrane...he said builder never mention it. Floor is 70sqm...wants cracked tiles replaced, tiles cleaned and re-sealed and want new conservatory laid with the same tiles. But not cracked ones!! :lol: