Renovating Walls 1950s Apartment

[AXS]

Currently moving my bedroom into the old children's room.

New floor and repainting.

However, I'm noticing that the walls are in much worse shape than I thought. The wallpaper is loose under the paint, one wall is only 9cm thick and sounds like a bongo drum, two exterior walls have a layer of tretex and one wall has unstable tretex. The walls are made of brick and slag stone.

I have a painter coming before New Year and I'm wondering how to make the walls decent before then?

What do you think about putting plasterboard directly over and screwing it very tightly? Maybe glue it?

Not too keen on tearing down all the tretex...

 

[BirgitS]

To eliminate the bongo drum effect, the wall needs to be insulated internally. If you apply drywall on the outside, you need to consider how it will affect the windows and doors. It may be easier to replace the treetex with drywall than to reconstruct the window reveals.

 

[AXS]

To get rid of the bongo drum effect, the wall needs to be insulated from the inside.
If you put drywall on the outside, you need to consider how it will affect the windows and doors. It might be easier to replace the treetex with drywall than to remodel the window recess.

Thanks!
The bongo drum is actually solid slag stone. Maybe it's the wrong description with the drum, but it doesn't insulate any sound at all and makes a loud noise if someone hits it.

The affected walls have no doors and windows, just a few electrical outlets. Still quite a bit of work, of course.

Had a painter here today, and he said he could cut away everything that was loose, maybe that's enough.

Maybe put in a few extra screws on the part of the treetex that's loose from the wall behind.

 

[BirgitS]

All loose wallpaper must be removed and the surface must be secure. Ask the painter if the result will really be good with just those measures.