Scrape the paint off the concrete wall or use a blaster.
Tile over painted plaster walls.
If you re not sure if you have lead paint test kits are available.
I know the tcna handbook for ceramic glass and stone tile installation says that paint is not a recommended surface for tile installation but here is the situation.
You should not tile over wallpaper glossy surfaces lead paint or plywood.
Don t try to use the tile setting adhesive or drywall joint compound to patch plaster walls.
Loose paint must be scraped and sanded off to prevent the tile adhesive from failing to adhere.
However tiling over tile can add quite a bit of thickness so make sure your wall can handle the weight.
I am doing a commercial job and did a wall of large subways.
Tiling over a painted surface.
Things you will need orbital sander 80 120 grit sandpaper safety glasses dust mask rags tape measure pencil 48 inch spirit level mastic or thin set mortar grooved trowel tile spacers tile cutting tool grout grout spreader sponge grout haze remover optional distilled white vinegar optional.
Fresh plaster whether applied as a patch or to the entire wall must dry completely before tile is applied.
January 7 2019 mark heinlein.
Both painted and bare plaster allows for the installation of tile.
If the walls you want to tile are concrete walls with paint on them remove the paint before you install tile so the tile adhesive has something to grab onto and hold the tile in the correct place.
Holes or cracked plaster requires patching.
The owner was taken with the installation and.