It s best to use a v notch trowel to layer and evenly spread the mastic or adhesive for wall tile installations.
Tile over cinder block wall.
First the problem with going right on the block is you might get moisture penetrating the wall and we don t want that.
Start by putting tiles on the bottom of the wall and work your way up.
Make sure the cinderblock surface is clean and free of loose material before applying the mortar.
You need approximately 4 cups 950 ml of water for an 80 lb 36 kg bag of cement mix.
All you have to do is pour the cement into a container such as a wheelbarrow then stir in the water with a shovel.
Fill the trench with 4 inches of gravel and pack it down.
On the fourth wall the tile and mortar are laid directly over cinder blocks this is the wall that is shared with the neighbors.
Spread the mortar over the walls using the flat of a notched trowel pushing the mortar through the lath and onto the painted blocks.
Snap a second chalk line horizontally along the bottom of the wall at the height of one floor tile from the floor.
Allow the mortar to dry overnight.
Hose off your cinder block or pavers to clean off any debris.
Can you tile directly on a block wall.
When the entire wall is finished tap tiles that are slightly raised with a rubber mallet.
The easiest product to use on a cinder block wall is surface bonding cement.
Snap a chalk line vertically down the center of the wall.
No one else seems to want to tackle your question so since i m back from vacation let me bounce this off you and you see if it makes sense.
Spend time prepping a cinder block wall before placing the tiles on the surface.
Because the bathroom is small there is not room to fur out the wall and still allow room for the tub.
Installing tile over a cinder block wall can not only raise the aesthetic of the structure but also increase its water resistance and insulation capabilities.
Cover the lath completely with the mortar creating a new surface for the tile to adhere to.
If the cinderblock wall is stable you may be able to apply tile directly to it with mortar.
2 dig an 8 inch deep and 6 inch wide trench at the base of the wall.