I have really tried to find some info on the forum here, but haven't been able to discern a definitive answer to my question.
I am going to build a simple toilet in a basement space and have a plumber to help with all the plumbing installation. However, I thought I would tile one wall myself, while leaving the outer wall "natural", just painted over with a diffusion-open paint. The wall in question is plastered and in good condition; I interpret it as the right materials being used during the construction forty years ago. However, a couple of flakes of the plaster came off when I tore down the built-in shelf that was there. It had been nailed into plugs in the plastered wall, and in a few places, the wall came off with the shelf when I tore it down.
The question is, is there any easy shortcut to repair the damages that occurred? I have read about so-called gypsum filler but am not sure if it is suitable for an outer wall. The "blemishes" that appeared are maybe a maximum of seven cm in diameter; otherwise, the wall is in fine condition. Can you maybe plaster only where the damages occurred? If so, which plaster is recommended?
The level of ambition is probably not as high as for other bathroom renovators. Therefore, it doesn’t seem worth it to plaster the whole wall. It is in the basement of a summer house, and the toilet is to be used as an extra toilet, so there will only be a toilet and a sink in a room that currently houses a water pump, cold water cistern, and water heater. The room is therefore already a "wet room," with painted concrete floors and a floor drain.
The wall is hand-plastered, charmingly uneven in structure, and its character is part of the intended finished result.
I would apply some cement mortar and after it has set a bit, blur the edges with a brush or coarse paintbrush... try it out in a place where it isn't very visible...
Soak the area around the damage thoroughly, apply c-bruk. Wait for half an hour, sprinkle some water and brush the surface of the repair with a large brush until it looks good. That's how I would do it.
What type of paint is currently there? I have the exact same nice shade in my basement and I'm curious if it's permeable so I can paint over it, or if I need to scrape it down before painting with new permeable paint.
Not the slightest idea of what color is on. It's probably diffusion-open, as I haven't seen any damage to the paint which otherwise occurs. It was probably painted sometime in the house's early days in the early seventies. I simply planned to paint over the color with another diffusion-open paint.
Thanks for the tips. Where can one get this "c-bruk" and which brand is the most reliable? Tried googling but found no clear answer.
Not the slightest idea what kind of paint it is. It is probably diffusion-open, as I haven't seen any damage to the paint, which otherwise would occur. It was likely painted sometime in the house's infancy in the early seventies. I simply planned to paint over the paint with another diffusion-open paint.
Thanks for the tips. Where can I get this "c-bruk" and which brand is the most reliable? I tried googling but found no clear answer.
Finja or weber. "putsbruk c" or "puts- och murbruk c". Any building supply store. Cheaper mortar from byggmax or cheapy etc will work fine too.
To complement the great tips you've received, you can use a wet dish sponge if you find it difficult with a brush.