Joints on flat surfaces are much safer.

Tile backsplash over plaster wall. Don't try to use the tile setting adhesive or drywall joint compound to patch plaster walls. Holes or cracked plaster requires patching. The wall does not look like plaster, it looks as if you tore off the paper covering on drywall.

My opinion is that people tile over previously finished walls all the time with success, but you need to make sure that you’re doing it right and using the right products. I don't know that mortar would be a good filller. I want to tile the backsplash area of my kitchen (between the countertop and upper cabinets).

Many of the bumps in my wall were smoothed out by the tile adhesive. Here we want to share our thoughts on alternatives to a regular tile backsplash. If you wish to improve the colour of the stones reworking it shiny or matte end, use pure stone colour enhancer proper earlier than.

Which if it was, you should do a better job of a water tight backing. No need to remove the plaster unless you also need to install blocking for the cabinets or alter the electrical. Applying a peel and stick backsplash over tile backsplash is a great way to renovate your kitchen without removing the old tile.

Mastic or some other adhesive. Start by cleaning the wall to remove any grease, then. First of all, removing all the power outlet and light switch wall plates.

Still, i think i would at least apply red guard (or other) waterproofing brush/roll on membrane within range. Swollen may be from water. The most important thing is that the plaster is in fact still solidly attached to the walls.