Hi all,
I am currently building a custom shower, and have been following the directions from a DIY book, and getting useful information off the web. For the most part, the instructions from all sources are consistent:
- Layer of mortar sloped to the drain
- Felt paper over mortar to protect membrane
- Membrane, with proper seal around drain assembly
- Backerboard on walls, down over membrane, but 1 1/2 inches off the pan floor
- 2 - 2 1/2 inches of mortar with pea gravel around weep holes to prevent cement from getting in the holes
What I haven't seen explained is what happens to the inside of the threshold to prepare it for tile? Should a narrow strip of backboard be screwed to the inside of the threshold (but kept 1 1/2 inches off the floor), and mortar over the top like the other interior walls? It seems like screwing the backerboard on the inside of the threshold would compromise the membrane? I've seen a few pictures of the steps involved, and it seems that everytime they get to the final bed of mortar, the threshold and inside of the threshold appear to be exposed membrane. Can you simply tile over the membrane???
Any help would be greatly appreciated!
Thanks and Best Regards, Todd