I'm in middle of having an inground pool constructed. So far, things have been going well. Currently the tile is being installed. I have noticed that many of the tiles sound hollow when you tap on them. Is this normal?
I know it is usually caused by air pockets in the mortar behind the tile (i.e. they didn't apply enough mortar when setting the tile). In floor tile, this is a major issue because the tiles could eventually crack with use. What about pool tiles? (I know no one should be walking on them, :-) I'm concerned about them cracking from expansion or falling off) If it is a problem, I want to see about having them fixed before construction continues.