I am in the process of renovating my apartment and have now removed the wallpaper on a wall because air bubbles had formed under it. Under the wallpaper, there is a particle board or something similar. Part of the board was loose, so I removed that part.
The house was built in the 1940s, and the wall in question is an exterior wall which, according to the blueprint, is made of brick. So they have put up wooden studs (about 1 cm deep) and on top of that this particle board (about 12 mm). I am attaching pictures here:
The question now is, what purpose does this particle board actually serve? Can I remove the board and paint/wallpaper directly on the wall underneath? Or should I put up, for example, a plasterboard instead, to avoid the wallpapers I put up from bubbling?
That is a Tretex board. It dampens noise and provides some insulation. An old invention from before hard chipboard or drywall existed. More interesting is what kind of wall is behind it, as it looks wallpapered. But don't tear it off. There are usually always bubbles in the wallpaper at the joints between the boards. There are paper strips. The easiest way is to either install thin renovation plasterboard or a thick cover-up wallpaper on the walls to get rid of the bubbles.
That's a Tretex board. It dampens noise and provides some insulation. An old invention from before the hard chipboard or plasterboard existed. More interesting is what kind of wall is behind it, as it looks like it has wallpaper. But don't tear it off. There are usually bubbles in the wallpaper at the joints between the boards. There are paper strips there. The easiest way is to either install thin renovation plasterboard or a thick cover-up wallpaper on the walls to get rid of the bubbles.
Thanks for the response! According to the blueprint, it should be brick, but when I peek into a drill hole in the wall under the board, it doesn't really look like brick. So I'm a bit confused there too.
But good, then I'll leave the board in place and go for plasterboard/wallpaper over it.
GoC said:
But it could certainly have been a repair after something right there.