If you put a 48 straight edge up against the most sunken areas there s a gap of almost a 1 2.
Tiling with unlevel walls.
Extra mortar is applied to areas that need it either areas with dips in or areas with thinner tiles.
Believe it or not there are more uneven walls and floors than there are even ones.
The mortar is spread.
The area of the wall to be tiled minus the area of the window is 37 square feet.
It simply involves applying mortar as normal to the substrate but then also applying mortar to the back of the tiles.
Plastering backer boards and self levelling compound are all great options.
Here is an easy way to set your 1st row and the rest going up your wall then lastly the first row is set.
Short answer to how to prepare an uneven wall or floor for tiling.
Things you will need measuring tape tile wet saw leveling spacers and wedges trowel thinset mortar rubber mallet grout grout float grout sponge.
The problem is that the wall is uneven.
Back buttering is a trick used for tiles of uneven thickness like ungauged slate or handmade tiles extremely large tiles or for tiles being installed on an uneven surface.