OT: Shower tile

Yes. But depending on the age and type of mastic, I use an old chisel (like my POS Buck Brothers) or even a box cutter to cut away the mastic. The old mastic should have penetrated the tile backing well enough to make it impossible to get it all off.

The good thing about the DAP is that it is thick enough to make a dandy gap filler behind the tile, allowing you to put a good amount of the DAP onto the tile, and mash it gently into place, stopping when the tile is flush with the surrounding tiles.

After mashing into place, run the appropriate sized bead of DAP around the tile to match the grout joints, wipe away the excess DAP with a wet paper towel and give it a day to dry before use.

Robert

Thanks! You guessed right. I used a box cutter. I even had to put a new blade in it (and it was still "impossible to get it all off", as you wrote below--but I think I got enough of it off). I found that my Crazy Glue was dried-up, so I'll pick up some of that with the DAP adhesive tomorrow. I hope my experience will serve as a good lesson for everyone not to shut their sliding shower doors too hard (and I'm glad I'm not upset at anyone else over it)! : )

Bill