It is possible to tile over painted drywall as long as the drywall is sufficiently prepared beforehand.
Tile over painted wall.
Score a line and then using a wall paper scraper see if you can lift the paint from the wall before tiling.
You may tile over existing tile painted or unpainted drywall plaster and textured walls.
I would suggest marking just below where the tiles are to finish.
Scrape away any loose or peeling paint or wallpaper.
Remove any remaining dust oil or grease with tsp tri sodium phosphate or an ammonia based cleanser.
Preparing the drywall requires that the surface be roughed up with a sanding sponge prior to applying the mastic to adhere the tiles in place.
Repair chips and cracks step 3.
Spread a small amount of mortar in an arcing fashion onto the wall where the tiles will be laid using the grooved edge of the trowel.
Apply primer step 5.
Sand the old tile step 4.
However this requires careful consideration and extra properties from the adhesive.
Wall preparation is an important step when you in install tile on a painted wall.
Press the tiles into the mortar in the same pattern you.
Things you will need orbital sander 80 120 grit sandpaper safety glasses dust mask rags tape measure pencil 48 inch spirit level mastic or thin set mortar grooved trowel tile spacers tile cutting tool grout grout spreader sponge grout haze remover optional distilled white vinegar optional.
Can you install tile on a painted wall.
Previously painted textured drywall prep.
The moisture in the cement makes the emulsion go soft and it can loose its grip on the wall.
Choose the right materials for the location.
Clean the old tile step 2.
If your paint tests positive call a professional.
However tiling over tile can add quite a bit of thickness so make sure your wall can handle the weight.
Choosing the right tile.
When tiling an area that is already tiled or painted it is often necessary to invest considerable time in stripping and then repairing the substrate.
You should not tile over wallpaper glossy surfaces lead paint or plywood.
Only on the boarder tile mind.
If you re not sure if you have lead paint test kits are available.
Paint with epoxy paint.