We are do-it-yourselfing a new bathroom with the aid of a plumber for the new water supply and fixture installation per local code. We want a ceramic tile shower and have been told we can install the vinyl pan required ourselves. Do you have any information on the Celotex or similar vinyl product and its' installation? We are using a concrete counter top in the room, would a concrete shower base be possible?
One more thing, do you recommend 1/4" or 1/2" cementitious backer board under the floor tile?