The wall has to simply be prepared in order to complete this task properly.
Marble over drywall.
You should not tile over wallpaper glossy surfaces lead paint or plywood.
Using an orbital sander go over all the areas where tile will be applied to smooth out any high spots and create a more tactile surface for applying mortar image 2.
By locating wall studs outside the tile perimeter and cutting through the drywall along the centers of the studs you can then pry the drywall along with the marble tiles away from the studs.
These tape lines will protect paint that will not be tiled over when sanding.
You may tile over existing tile painted or unpainted drywall plaster and textured walls.
If you are tiling an area that is not in a bathroom tiles can be applied directly to the sheetrock simply and easily.
Problems with drywall while it is a reliable building material drywall is not waterproof or water resistant which limits the materials that can be applied directly over the surface.
How to tile over painted drywall.
However tiling over tile can add quite a bit of thickness so make sure your wall can handle the weight.
If you want to update your kitchen or bathroom walls with tiles you don t have to remove existing painted.
Sheetrock or drywall is no different for tiling over than wood plaster cement or other wall materials.
If you re not sure if you have lead paint test kits are available.