After you have a clean concrete slab you can grind down high spots and you can flatten or level the surface by using a patching mortar for tile.
Can you tile on painted concrete.
Can i install ceramic tile over a painted concrete floor without removing the paint.
If the concrete has been sealed better adhesion may be achieved by going over the concrete with a grinder to create a rough surface.
The board is then pressed into place on the wall and adjusted for plumb and level.
Tile cannot be attached directly to painted concrete as the thin set will not adhere well to the paint.
Paint used on concrete will not bond with the tile adhesive.
The surface should be cleaned and allowed to dry.
You need to prepare by removing the paint and scarifying the surface to open up the pores of the concrete.
Painted surface must be checked to ensure it is firmly adhered with no sign of flakiness.
As long as there are not structural cracks in the concrete floor you can install porcelain tile over it.
You want water to readily absorb into it.
Once the concrete floor is paint free the tiling process is similar to most other floor tiling jobs.
Steam off the paint with a steam mop and rough the concrete up a bit.
Installing tile over painted concrete adds a few extra steps to your tiling job.
Existing ceramic tiles must be checked to ensure that they are firmly fixed with no signs of any loose or drummy tiles.
First a surface more textured and solid must be applied over the painted concrete.
A tile consultant michael byrne responds.
All paint will need to be removed before you begin installing the tile.
Omg these are all rediculous suggestions.
The surface must be free from dust dirt grease oil or other contaminating material.
A scratch coat will give the mortar something to hold on to instead of the layer of paint over concrete.
This process will work on painted or bare concrete.
The tile will be fine.
This surface is called a scratch coat.
Suggesting another product over the concrete is overkill.
If you use a stripper to remove the paint be sure to flush it thoroughly to remove any residuals.
Painted concrete can be made porous with sandblasting or other hard abrasive actions.
Tiles can be set over the construction board panels using unmodified.
Unfortunately the tile cannot be adhered directly to the painted surface.