I d assumed he would cut out the wall and put in cement board or something.
Tiling plaster walls shower.
Be careful to cut.
Don t try to use the tile setting adhesive or drywall joint compound to patch plaster walls.
Fresh plaster whether applied as a patch or to the entire wall must dry completely before tile is applied.
How to remove bathroom tile without damaging the plaster walls.
My house was built in 1925 it has plaster walls.
Cut away the grout surrounding the tile or tiles that you want to remove.
The adhesive and tile will block moisture from evaporating.
Holes or cracked plaster requires patching.
You may tile over existing tile painted or unpainted drywall plaster and textured walls.
Work slowly and at about a 45 degree angle.
You should not tile over wallpaper glossy surfaces lead paint or plywood.
Slide a putty knife or plaster spatula behind the tile getting as much of the.
However tiling over tile can add quite a bit of thickness so make sure your wall can handle the weight.