Kerdi board building panels can be used to create a ready made flat and plumb surface on the cinder block wall.
Tile over cement block.
Used thinset and concrete screws to install the backerboard then redguard over the backerboard before tiling.
Answer it is possible to bond porcelain tile to a painted surface but it isn t recommended because the overall tile attachment is limited to the strength of the bond of the paint to the concrete.
Had to chip off all the thinset with an electric chisel.
Ceramic and porcelain tile are so frequently installed at or above grade level on a cement board underlayment or directly on plywood that it almost seems novel to install tile directly on concrete.
Use a flat scrap of wood to even and smoothen out the surface and let this dry for a few hours or overnight.
Yet this application does make sense since concrete is heavy solid and is typically thought of as an unbending uncompromising material.
Then flush and fill the areas with cement.
The easiest product to use on a cinder block wall is.
They are screwed into the wall and are waterproof and thermally insulating.
First chip the bumps cracks and dents on the concrete wall with a hammer.
Wet a section of the wall again to.
Nail 3 4 expanded metal lath to the blocks with 1 1 2 to 2 inch concrete.
If the paint comes loose so does the tile.
How to install ceramic tile over painted block walls for a shower.
You should either strip or bead blast the concrete and thoroughly clean it.
Clean the surface of any dirt or debris with a ph neutral cleanser and a sponge or scrub brush.
Remove as much debris as possible from the wall so the concrete.
Construction board panels are extremely light and easy to cut but they provide a very strong durable and waterproof surface on which tiles will be installed.
You could set your tile right on the block if it is flat enough some block work i ve seen has convinced me that the masons were drunk on the job and there is no paint or other coatings that thinset would have a hard time bonding to.
But we had to install 1 2 inch tile backerboard to bring the tile up and over the tub lip.
There are quite a few ways to prepare a block wall for tile including direct mortar cement board kerdi board and a layer of liquid membrane.
The backerboard provided a smoother surface to tile on.
Rinse the cleanser away with clean water.
Clean debris off the wall with water and a sprayer.