Tiling Over Painted Concrete Wall

An epoxy based paint requires an epoxy adhesive to bond to it.

Tiling over painted concrete wall.

You can rough up the painted surface which allows the mastic or thin set mortar especially those designed for painted drywall to adhere. Things you ll need ph neutral cleaner sponge scrub brush 3 4 expanded metal lath 1 1 2 or 2 inch concrete nails hammer tin snips thinset mortar bucket notched trowel ceramic tiles tile spacers plywood board carpenter s level silicone caulking grout grout float lint free cloth. Sand the wall with 80 to 120 grit sandpaper on an. For application over an uneven concrete surface a lightweight waterproof construction board.

While you can install tile directly on concrete problems erupt when the concrete cracks or shifts. Ventilate and dehumidify the area before during and after the installation because basement walls are usually susceptible to moisture. If you choose to try to bond the tile to the paint then you need determine what type of paint it is. Inspect the concrete surface.

Painted concrete can be made porous with sandblasting or other hard abrasive actions. Water should readily absorb in the concrete as an indication that it is suitable for bonding the tile to it. A latex based thin set adhesive should be used over the latex based paint. Tile cannot be attached directly to painted concrete as the thin set will not adhere well to the paint.

You can get this from construction or hardware stores. For tiling over tiles in bathroom walls you ll need to set up sheets of waterproof membrane in between the concrete wall and tiles. If the paint comes loose so does the tile.