Here's pics of a shower I tore out yesterday. The shower was built 14 years ago when the house was built. I was surprised at how well it had held up, despite the way it was built. You'll see that the liner was laid directly on the floor, and the clamping drain flange is about 1/2" above the level of the liner.


Durock was used to about waist height, and drywal was used the rest of the way up. The seat was built with a piece of liner attached to it. Durock was laid on top of that and nailed on (nails through the liner). This section of liner wasn't attached to the floor liner, so any water that hit the bench ran down and under the floor liner. You can tell because the wood subfloor has seen it's share of water. Of course the slab was saturated. I can only imagine that the shower wasn't really used that much, or there would have definitely been more mold and water damage.




The curb was the only solid part of the whole shower (solid concrete) but the liner was cut off at the inside edge of the curb, which allowed water to penetrate the studs on either end of the curb.


All of the tile (pink, yuck!) was attached with mastic. There was no use of thinset anywhere in the shower. The grout was falling out of the ceiling, and mold was growing near the floor.



My favorite part: For some unknown reason, one solid piece of liner was used directly on the floor, then another piece was put on top of it, with a hole cut out for the drain. The edges of the "upper liner" didn't even reach the walls, and several pieces of liner were laid in the corners. In all, there were four pieces of liner, plus the original liner and the piece that went over the bench.



Anyway, these folks will have a brand new Kerdi shower in by the end of the week.