A few years ago this happened on another spot (I thought soap scum retained water) and eventually the wall crumbled and had to be rebuilt. Is it a sign the wall behind the tiles are wet? Is it enough toseal the cracks around the tiles?
The way I "rebuilt" the crumbled wall just this November was I got a sheet of PVC about ten by twenty inches, put flashing compund behind it and sealed around with silicon. I can't afford any big projects. I'm freaking out.
- = - Vasos Panagiotopoulos, Columbia'81+, Reagan, Mozart, Pindus, BioStrategist