Tile cannot be attached directly to painted concrete as the thin set will not adhere well to the paint.
Tiling over concrete block wall.
Tiles come in a variety of natural and man made materials and they make durable attractive surfaces for both walls and floors.
Cinder block wall preparation first the cinder or concrete masonry unit block needs to be prepared correctly.
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.
Ventilate and dehumidify the area before during and after the installation because basement walls are usually susceptible to moisture.
Apply commercially made filler that is made specifically for cinder or concrete blocks to create a smooth surface to which the tile can adhere.
You can get this from construction or hardware stores.
A completed tile job is extremely heavy and requires a substrate sturdy enough to support the weight.
Cracks and gaps can be filled with portland cement based fillers.
The key to a long lasting and attractive tile installation is proper substrate preparation.
Id board it mate quicker and you can tile straight away.
The safest way to approach questionable concrete is not to cover it over with cbus but to fix the concrete.
Installing tile over concrete walls is possible but presents some unique challenges.