parkfront
Junior Member
I have figured that Polystyrene would provide a good backing for floated mortar bed shower walls. It won't promote mold growth and is very water resistant (extruded (XPS) more than expanded (EPS)). Either XPS or EPS will allow vapor transmission though.I looked into the Wedi product, which is extruded polystyrene with a cementitious layer on the face for tile, but it is very expensive and I don't need the cement layer for tiling upon.
I need to add 1/2" layer to the studs to bring out flush with the 1/2" ply that backs the shower pan but I want to stay away from gypsum based products....too many mushy rotten tearouts that I've seen.
My plan was to line the walls and ceiling with EPS (could not find XPS in 1/2" sheets) and then add a vapor barrier , durock the ceiling, float the walls, float the floor and tile with stone.
Does anyone see any problems with my plan?
Any suggestions for another non-gypsum based 1/2" sheet material that would work?
Thanks
Gregory
I need to add 1/2" layer to the studs to bring out flush with the 1/2" ply that backs the shower pan but I want to stay away from gypsum based products....too many mushy rotten tearouts that I've seen.
My plan was to line the walls and ceiling with EPS (could not find XPS in 1/2" sheets) and then add a vapor barrier , durock the ceiling, float the walls, float the floor and tile with stone.
Does anyone see any problems with my plan?
Any suggestions for another non-gypsum based 1/2" sheet material that would work?
Thanks
Gregory