I have an old tub shower, the walls are made of acrylic 'water resistant' stuff that is breaking down. I want to replace it but I can't find any 'waterproof' fiberglass or acrylic sheets. I can only find 3 piece tub surround kits that do not reach to the ceiling.
I was wondering if I could install one of this kits against some green board and leave the the top 15 inches or so of green board exposed, painted of course. There would be lots of steam, but no high pressure water stream hitting the top.
Strip the wall to the studs if you have something rotting you donít just want to cover up. You can get surrounds that are stud mountable so you only have to screw it in. use some cement board on the top of it and tile it. Iím not sure of what your state code will allow green board.
If your going through all this work while the wall is open replace your shower valve. You should be able to do this in able a day and a half.
most surrounds don't go all the way to the ceiling. greenboard will be fine. if your goal is to rip everything apart then i would take the drywall or whatever is there now. you can get them direct stud or right to the drywall. if there is no mold behind it or the moisture source is eliminated you can cover if you wish to. can get moisture resistant paint also.