Do not smooth the wall completely.
Tiling bumpy walls.
You can tile over it but it needs to be smooth to prevent your new tiles from laying crooked.
Things you will need measuring tape tile wet saw leveling spacers and wedges trowel thinset mortar rubber mallet grout grout float grout sponge.
Mark off an area of equal size on the floor nearby.
Cut the tiles to.
Move the knife in upward downward and sideways directions loosening and removing the surface of the texture from the wall.
How to install wall tile over textured paint 1.
Just remove the roughest part.
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.
However if you want a more unique approach you can put peel and stick vinyl tiling on your walls.
If you had to remove pre existing tile or fix holes and cracks there are likely bumps in the wall.
Measure the wall where you want to install the tiles.
Prep a wall for tile.
Place a wide drywall knife on the wall at a 45 degree angle.
Sand the paint on the wall using 80 grit sandpaper.
Sand the area with medium grit sandpaper until even and vacuum up the dust.
Wipe with a damp cloth to remove any remaining dust and allow to dry.
You may also paint this area if only tiling a portion of the wall to minimize cut in work around the tile.
Prime to seal it and let dry.
Sand the wall with medium grit sandpaper 80 grit to further smooth the texture creating an even surface on which to apply the tile.