The house I live in is quite old and the renovations made ~ 15 years ago by the previous owners are of extremely(!) poor quality. It's like the people who plastered it did it with their toes. In some spots, the plastering work is lower, higher or unevenly layed on the wall, etc. The walls are made of bricks, except one which is a drywall.
I really don't like plaster or plastering, and I want to avoid it. I don't want to sand the wall once it is done. I was thinking to apply a layer of mortar over the walls to get an even texture everywhere, and then paint it with wall paint. Would the mortar stick to the plaster wall, provided I use a primer? Would it be strong?
I know that after releveling the wall will not be completely straight, and that is fine, I don't mind it as long as there is an even structure. This video describes what I would aim for, but with a different texture or finish: https://www.youtube.com/watch?v=kQxPIf4xRAI&ab_channel=getAMCI