concealed bath/shower valve
I have a concealed bath/shower valve. It is vertical and there is a vertical tile joint that runs throught the middile of it (top to bottom). I noticed at first that the grout on the tiles at this joint started to crack, and then the tiles started to protrude out and cracked and the valves face plate is sitting slightly slanted, as though something is forcing the tiles out at the joint. My bathroom fitter has removed the tiles and retiled. After a month I have noticed that the grout is cracking again and the tiles seem to be forcing out at the joint again. When I place a long spirit level on the wall, its not flat any more. Its like where the joint is, it is protruding into a v shape. Hope this makes sense and someone can help.