Chimney where the plaster is falling off

[stjärnan]

I am renovating a room where the chimney breast extends into one corner. The previous owners glued newspaper and wallpaper onto the chimney breast and then attached wooden paneling. When I, 50 years later, used a crowbar to remove the paneling (we're talking about badly worn brown-stained pine wood), I ended up removing some plaster as well. I'm no expert on plaster, but it doesn't feel right to wallpaper over it again if it's so loose. It should be noted that even if I have a roaring fire in the stove in the adjacent room, this part of the chimney breast doesn't noticeably warm up. I see two solutions:
- Glue drywall onto the chimney breast and wallpaper over it
- Tear down the plaster to the brick and replaster the whole thing.
What does the forum say?

 

[Lärospånet]

Hi, I would personally definitely knock down and re-plaster - and then keep the plastered surface clean and without wallpaper - nice and honest in such a way that you see and feel the materials - and moreover a job to be proud of.

 

[scim]

I glued plasterboard to the chimney breast when we renovated the bedroom. Placed the boards under pressure with some studs against the opposite wall, and it's still holding up a few years later.