Hello! I have been reading the forum for a long time and am now working on my first renovation at home. I've received great information and inspiration through the forum so far.
I was planning to repaint the living room (condominium built in the 1960s with old worn wallpaper in 4 layers). The existing wallpaper was in questionable condition, so I decided to remove it with a wallpaper steamer (water steam variant) to start fresh and get smooth, nice walls.
The walls under the wallpaper turned out to be something I assume is gypsum material. In some places, it was in poor condition with cracks, and in some places, it also bulged out and could be easily removed. The thickness of the removed layer varies between 3-4mm to about 10mm.
In the corners of the room, there's basically no material at all (the gray part is the underlying concrete, the left side in the image is wallpaper not yet removed)
What product did they use, and how do I best fill in the holes to remedy the problem that has arisen? Thick layers of filler against the concrete wall? Some cement? Liquid gypsum?
Thank you very much. I don't think it's a gipsskiva. Then I would assume it would be the same thickness all the way. The material goes from 0mm in the corners to about 1cm where it's thickest and there are also no seams. Daniel
