Some type of wall board like drywall or backerboard or a mortar bed.
Tile on dry wall.
The tile in your bathroom is likely adhered to one of two materials.
The tile does add a layer of waterproofing protection but the real heart of the system is in the wedi board behind the tile.
The top objective is to create a smooth and uniform surface on the drywall for the tile to be evenly placed.
Spread the adhesive evenly in small in sections since the adhesive can dry before you lay any tile if your work area is too large.
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.
If you want to update your kitchen or bathroom walls with tiles you don t have to remove existing painted drywall to do so.
You may tile over existing tile painted or unpainted drywall plaster and textured walls.
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.
Lumps and bumps lead to misaligned tiles.
If you re not sure if you have lead paint test kits are available.
You should not tile over wallpaper glossy surfaces lead paint or plywood.
However tiling over tile can add quite a bit of thickness so make sure your wall can handle the weight.
It will be fine to tile over drywall in low moisture areas such as tiling around a fireplace.
Next take the tile adhesive thinset mortar and apply it to the drywall with a trowel.
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.
This surface will be the foundation which holds your beautiful backsplash together over the years and a crumbling foundation will shorten the lifespan.
Watch this video to find out more.
As long as your wall is smooth and flat you can install a ceramic tile kitchen backsplash directly over drywall or plaster with no problem.
You can rough up the painted surface which allows the mastic or.
Once you spread the mortar press the tiles into place.
Start by cleaning the wall to remove any grease then apply thin set adhesive and set the tile.