Re: Squishies coming out of the walls!
With the problem you describe, you already have water infiltrating the wall. If this has been going on for a year, I would say that there is a 99% chance that mold, mildew, and fungus is growing in places you cannot see.
I recommend removing all of the tile, removing the substrate (what the tile is glued to), properly drying, disinfecting, and repairing any affected framing lumber, and reinstalling the whole works properly. You will probably break some of the tiles in the process; plan to purchase all new tiles for the area since the new tiles (even the same brand & color) will be from a different lot and unlikely to match perfectly.
Proper installation is on a substrate of cement board or other material specifically designed for tile; attachment of the tile using thin- or thickset mortar (depending on the tile; never mastic); grouting (with grout, not caluk) and sealing the grout with grout sealer.
Yes, that sounds extreme, but it sounds like it wasn't done right in the first place, and if it's not done right there's no reliable way to fix it without a complete redo. Lipstick on a pig and all that.
Last edited by Fencepost; 06-12-2011 at 11:40 PM.
The "Senior Member" designation under my name doesn't mean I know a lot, it just means I talk a lot.I've been a DIYer since I was 12 (thanks, Dad!). I have read several books on various home improvement topics. I do not have any current code books I can refer to. I was an apprentice plumber for two years.