This is commonly done in the bathroom or kitchen to enhance the decor and make the walls easier to clean but you can make your choice on what room you want it in.
Tiling bumpy walls.
Prime to seal it and let dry.
Sand the area with medium grit sandpaper until even and vacuum up the dust.
Measure the wall where you want to install the tiles.
Prep a wall for tile.
You may also paint this area if only tiling a portion of the wall to minimize cut in work around the tile.
Sand the paint on the wall using 80 grit sandpaper.
Vinyl tiling can be used for a broad variety of applications in your home most commonly your floors.
How to install wall tile over textured paint 1.
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.
You can tile over it but it needs to be smooth to prevent your new tiles from laying crooked.
On dec 17 2019.
If you had to remove pre existing tile or fix holes and cracks there are likely bumps in the wall.
Things you will need measuring tape tile wet saw leveling spacers and wedges trowel thinset mortar rubber mallet grout grout float grout sponge.
Wipe with a damp cloth to remove any remaining dust and allow to dry.
Do not smooth the wall completely.
Look for 100 grit or 80 grit sandpaper and wear a mask to protect your lungs from the particles in the air.
Mark off an area of equal size on the floor nearby.
Place a wide drywall knife on the wall at a 45 degree angle.