You should either strip or bead blast the concrete and thoroughly clean it.
Can you tile a painted concrete floor.
Basement mudroom or ground floor laundry room you need to figure out this step before going to far along.
Sheets of cement backing available from most do it yourself.
Tile cannot be attached directly to painted concrete as the thin set will not adhere well to the paint.
That would have created a big step up for us though so we liked the idea of keeping it as flush as possible.
Lay down more hardibacker over painted concrete and adhere the tile to that.
All paint will need to be removed before you begin installing the tile.
You need not be in this business for long time before the pickle of having to work over a painted concrete surface comes up.
Once the concrete floor is paint free the tiling process is similar to most other floor tiling jobs.
It will help to prevent peeling and flaking of the paint over time.
Priming the tiles is one of the most critical and often overlooked steps.
If tiles are installed over a painted floor the bond strength of the tile adhesive.
I do not know of any product designed to work above or onto of a painted surface concrete.
Can i install ceramic tile over a painted concrete floor without removing the paint.
The house was built in the late fifties and the slab floor has been painted at least once.
Answer 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.
Painted concrete can be made porous with sandblasting or other hard abrasive actions.
I can tell you from working in this area that the paint coating does seem to be well adhered to the concrete.
But there is a solution to the problem.
Unfortunately the tile cannot be adhered directly to the painted surface.
While you can install tile directly on concrete problems erupt when the concrete cracks or shifts.
High adhesion primer will chemically bond to the tile itself while still creating a surface on which you can reliably paint.
Paint used on concrete will not bond with the tile adhesive.
If the paint comes loose so does the tile.
Unless the paint in question is properly applied epoxy paint not the kind that comes in a spray can you shouldn t install ceramic tiles over either paint or paint overspray.
Ceramic tiles will not adhere to an enamel painted floor because the surface is too smooth.
Water should readily absorb in the concrete as an indication that it.