To do so make sure all of the tiles are intact and secure.
Prep textured wall for tiling.
Get rid of or pre treat wallpaper if present repair any cracks or signs of damage.
Repair any loose or cracked tiles.
Sand the wall with a medium grade sandpaper to create that rough surface for the grout.
If existing tiles are beyond repair remove the tile and install a piece of wallboard in its place.
Drag the wide area of the scraper across the paint in all directions to remove as much paint as you possibly can.
Use either a hand held sander or an electric sander.
Repair or remove unfit plaster.
Sand so that the adhesive can bond.
Vacuum the wall and.
Then fill in the cracks and holes present and use sandpaper to fix any uneven areas.
Start by removing any molding switch plates outlet covers and other hardware attached to the area being tiled.
Previously painted textured drywall prep.
How to prepare painted or textured drywall for tiling however first you should remove any signs of paint not firmly or tightly fixed in place.
Remove old fittings such as pins screws rivets etc.
Wait for it to dry then use a filler to make it an even surface.
How to prepare for tiling a wall.
Get rid of any other paint with paint remover.
Place a wide drywall knife on the wall at a 45 degree angle.
Wash the wall with tsp tri sodium phosphate or an ammonia based cleaner to remove any grease or oil.
Sand the wall with medium grit sandpaper 80 grit to further smooth the texture creating an even surface on which to apply the tile.
Move the knife in upward downward and sideways directions loosening and removing the surface of the texture from the wall.
Make sure there is no dust or heavy particles.