You need a shower drain with a Roman tub top. That gives both the drainage and the stopper.
: I want to install a custom tile bathtub about 12 inches deep. I am planning on building it like a
: standard tile shower base - cement board backer, mortar bed, liner, mortar, tile. My problem is
: the drain. Standard bath tub drains don't have the means to drain water that leaks below the tile
: but above the liner, and standard shower drains don't have a stopper and overflow openings.
: What kind of drain do I need? Are there any other problem with a tile tub that I should know about?
: Would it be better to use a copper or lead liner instead of a plastic membrane? What about code
: requirements � anything special I should know? I have the sneaking suspicion that there is something
: wrong with my plan since you see so few tiled tubs.