boat21
New Member
I am in the process of building a tile shower from scratch. I planning to build the base myself out of tile and I have researched how to do it and make it water tight. When completed, the shower will be about 32X 48. The shower will open on one of the 32" sides. I plan to use concrete board on the other 32" side and one of the 48" sides. On the second 48" side, I would like to know if there is a way I can use the existing wall (it is an external wall of the house made of cinder blocks, with some mortar on top of the cinderblacks to smooth them out on the inside and then with either finish plaster or maybe some old version of drywall over the mortar. (bear with me, it's an old house) I am concerned that if I take it down to the cinderblock and attempt to hang concrete board, that I will have nothing onto which to screw the concrete board (drywall or plaster is probably hung on wood pieces nailed into cinder blocks but might not be strong enough to hang concrete board )so I would rather not fix it since it aint broke and add a membrane or tar paper (?)or coating to the existing wall and then tile over that. Space is really tight so I dont want to build a fake wall just to hang concrete board. Can I do this and if so what should I use?