As you have already cleaned and smoothened the tile covering the area now you need not panic whether your idea of putting wallpaper on the tile area will get appropriately executed or not.
Can you put wallpaper over tiles.
Yes ofcourse you can put wallpapers over tiles in a bathroom for that you need to use sanitary wipeable wallpapers with is excellent in water resistance.
If you are unsure you may have to cut into the wallpaper to see if there is another layer underneath.
You can even wallpaper over slick nonporous surfaces such as tile concrete block or synthetic laminate paneling.
On many of these surfaces you ll first need to apply lining paper which is a blank wall covering that provides a smooth surface for regular wallpaper.
If you have old ceramic wall tiles in your kitchen it can really date the look of the room.
Apply a layer of bridging material or heavy duty lining paper over the now smooth sanded ceramic tile.
You may want to apply a prep coat to the ceramic tile before hanging the lining paper but it should stick if you ve adequately prepared the surface.
The best option is to use vinyl wallpaper.
There are a few reasons why tiling over wallpaper is problematic mostly because you re risking your expensive tiling job on a surface where you re cutting corners to prepare.
No extra preparation is needed on a smooth surface.
This layer will provide a blank slate on which you can hang wallpaper.
Okay now as the primer has dried you have the right to put the wallpaper to your bathroom wall.
If you want to increase the adhesive strength of wallpapers in bathrooms then you can also add some like 20 dispersion adhesive to your regular.
Put over the wallpaper.
Try covering the ceramic tiles with another material to create a new backsplash.
If you want the tiles to stay up for the long haul it s best to put in the hard work to remove the wallpaper according to popular mechanics.
However if there is more than one layer of wallpaper on your wall remove them.