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Tub or shower wall tile preparation: Apply a layer of 1/2â³ thick cement backer board to the wall studs. Tape any seams and corners with fiberglass tape. Apply thin-set adhesive over the fiberglass tape, and allow it to dry. Roll a waterproofing sealer over the walls, and allow the sealer to dry.
I thought I had convinced myself that I can do my own tile tub surround. We currently have a three piece tub surround over a cast iron tub. I am keeping the tub. I have no idea what is under the tub surround - so was planning to likely have to take it down to the studs. If I tile to the ceiling, it will be a little more than 31 sq. ft. total. I've gone over and over the steps and I think I understand what to do.