I have a small moisture damage on the plaster on a basement wall. It seems to be a few mm with white plaster and then it is painted. I would repair the damage with similar plaster, but I don't know which plaster it is. I would assume it's lime plaster, but then I'm not really sure which lime plaster I should buy.
Then I would paint with silicate paint, but now I've discovered that the wall is painted, can I paint with silicate paint over another paint? What kind of paint was used in the 70s?
Then I would paint with silicate paint, but now I've discovered that the wall is painted, can I paint with silicate paint over another paint? What kind of paint was used in the 70s?
It could have been any color, even in the 70s. However, it does not appear to be a plastic paint, but actually a suitable type of paint, like silicate.
It looks like water damage in a corner. Is it an exterior wall corner? Is the moisture damage due to surface water/gutters/downpipes?
Has the cause of the moisture been addressed?
It's no use fixing the interior if the root cause hasn't been addressed.
It looks like water damage in a corner. Is it an exterior wall corner? Is the moisture damage due to surface water/gutters/downpipes?
Has the cause of the moisture been addressed?
It's no use fixing the interior if the root cause hasn't been addressed.
It is a 70s house, but it was drained about 10 years ago. The basement stands on an uninsulated slab, so you can expect some moisture migration through the slab. Therefore, I would paint with silicate paint so the wall can breathe. The wall is actually an interior wall that runs through the middle of the basement. Previously, there was textured wallpaper on the wall which may have contributed to the moisture damage. On the other side of the wall, which is just painted, there are no problems.
The paint on the wall is very matte. How can you know if it is silicate paint? Is it just a matter of trying to paint on the wall?
The paint on the wall is very matte. How can you know if it is silicate paint? Is it just a matter of trying to paint on the wall?
Unfortunately, there is no guarantee that the drainage has been done correctly (unless you did it yourself or have photographic evidence). I think the moisture stripes go a bit too far up the wall in the corner for it to be solely from the slab, but it could naturally be due to tightness and/or poor ventilation just in that corner.
To determine the type of paint, you probably need to send in a paint sample. Or if you have a paint store with professional/experienced staff nearby, you could start there. Otherwise, you'll have to take a chance. If it works, it works. (Sometimes there might be small sample cans available.)
To determine the type of paint, you probably need to send in a paint sample. Or if you have a paint store with professional/experienced staff nearby, you could start there. Otherwise, you'll have to take a chance. If it works, it works. (Sometimes there might be small sample cans available.)
Looks like it is painted with lime paint, repair with 1mm lime mortar weber 144.
And then possibly lime paint.
And then possibly lime paint.