Wall for bathroom with tiles

[oceanis]

Use KC bruk, and where you will get thicknesses up to 20 mm, you can apply it in two stages. That is, coarsely plaster the areas that will be a bit thicker and make your larger repairs, then finish plastering the walls the next day.

But as I mentioned earlier, pre-wetting is important, and it wouldn't surprise me if you have to spray the walls, especially the brick wall, several times over a couple of days. Use a pressure sprayer to make it easy and not soak the floor too much. But you will see that it absorbs and dries almost immediately, and then it's too dry.

Post-wetting for a couple of days prevents surface cracking.

 

[Patrik Kullman]

I have been using a lime brush for watering, and as you said, the brick absorbs incredibly. I've gone over the brick 4-5 times, and even though there's a difference, it still absorbs quickly.
The hollow block wall seems calm, though.

Should I fill in/rough plaster with Grundningsbruk A or should I fill in with Putsbruk C?
Do I need to use Grundningsbruk A before the actual plastering?
It feels like a lot will run down into the hollow block, is there really nothing else to fill holes that are about half a brick in size?