It is better if you focus most of your attention on the paint that is loose.
How to prepare an uneven wall for tile.
To do so make sure all of the tiles are intact and secure.
If existing tiles are beyond repair remove the tile and install a piece of wallboard in its place.
Wash the wall with tsp tri sodium phosphate or an ammonia based cleaner to remove any grease or oil.
Sand so that the adhesive can bond.
Apply the last layer of skim coat and use a medium sized sandpaper to achieve a rough texture.
Plastering backer boards and self levelling compound are all great options.
Get the chisel into one of the tile s edges and hammer the end to force it under and the tile away from the wall.
Use tile spacers if necessary to keep the tile lines straight in the layout.
Short answer to how to prepare an uneven wall or floor for tiling.
The mortar is spread.
Believe it or not there are more uneven walls and floors than there are even ones.
There are numerous ways to make a bumpy uneven or unlevel surface ready for tiling.
Repair or remove unfit plaster.
How to prepare for tiling a wall.
Remove the tile and prepare the wall according to the corresponding instructions above or tile over the existing tile.
How to prepare drywall for tiling fresh plaster needs up to a month for the material to set in and fasten.
Spread the mortar with the flat edge of the trowel then groove.
If you want to keep the old tiles then make sure you re careful and make the floor padded for when they fall off.
Spread thinset mortar on the bottom center of the wall.
Get rid of or pre treat wallpaper if present repair any cracks or signs of damage.
Cut into the grout between the tiles with a sharp utility knife and then get to work with a hammer and chisel.
Remove old fittings such as pins screws rivets etc.
Repair any loose or cracked tiles.