In areas of high moisture such as walls in a shower for long term durability it is not advised to install tile over drywall even if the drywall is type mr moisture resistant.
Tile over sheetrock walls.
Continue sanding the area until the paint is no longer shiny.
If the paper is green it s greenboard and you shouldn t tile over it.
Peel back the paper and look at it carefully.
You should not tile over wallpaper glossy surfaces lead paint or plywood.
Step 3 apply primer to the sheetrock.
Step 4 place tile adhesive on the sheetrock.
Measure across the wall the length of.
Sand the wall with 80 to 120 grit sandpaper on an orbital sander s pad.
How to tile over painted drywall.
Measure the width of the wall and divide the number by two to find the center.
The tile does add a layer of waterproofing protection but the real heart of the system is in the wedi board behind the tile.
Step 5 grout.
Step 1 obtain materials from home improvement center.
If it s just white or grey tile away to your heart s content.
Compare this to the common practice of tiling over drywall and you get the idea that you have a totally different shower by using a product that is meant to function in the shower.
In areas that are exposed to an abundance of moisture it is better to install a cement board as a backer rather than a gypsum board.
However tiling over tile can add quite a bit of thickness so make sure your wall can handle the weight.
If you re not sure if you have lead paint test kits are available.
How to tile over sheetrock.
You may tile over existing tile painted or unpainted drywall plaster and textured walls.
Use a utility knife to remove a little 1 2 square section of paint paper from the face of the drywall.