Hi, question about wall tiling in my shower/bath.
Is the waterproofing done underneath the tiles, or
is it done over the surface of tiles?
The reason I ask -- the wall tiles in my shower
seems to have lost its seal. I'm trying to figure
out if I must tear out all the tile, apply a seal,
then retile, or do I simply apply some type of
sealant on top of the existing tile?
I'm open to any suggestions... simpler the better.