How would you have done this? Plaster on mortar

[downup]

I'm sprucing up a room, this room is probably 100 years old as it was built in the 1920s.

Having a bit of a dilemma here, tight budget and not wanting to frame the entire wall. It's a section about 60 cm that's an old wood stove (on the other side).

There was a closet here before.

How do I attach this drywall sheet here? Are there screws suited for this?

Renovation wallpaper will be placed on the drywall later.

Yellow denotes studs, red is concrete/mortar.

 

[Semiproffset]

Gluing with PL400/600 works perfectly well.

 

[richardtenggren]

Gypsum plaster works well too, I believe it says something about gluing plasterboards on the bag

 

[TechChad]

If I had a poor economy, I probably wouldn't go for renovation wallpaper, it's quite expensive, isn't it? It's better and not very difficult to putty.

The first time I put up new drywall, I did the same thing and used renovation wallpaper, thinking it would be better than puttying. Oh, how wrong I was.

 

[Denniis]

A bag of gypsum plaster works perfectly, it sticks great. You can use the remaining part of the bag as filler in the joints, that's what I did with good results.
I glued a paper strip with mesh glue in each joint on the plasterboard, then applied gypsum plaster.

 

[ZipLock]

A bag of gypsum plaster works perfectly, it holds very well. You can use the remaining part of the bag as filler in the joints; that's what I did with good results.
I glued paper tape with paste glue in each joint on the drywall, then gypsum plaster on top.

Wasn't it incredibly difficult to sand? Gypsum plaster is much harder than filler.

 

[Denniis]

Didn't it become terribly difficult to sand? Gypsum plaster is much harder than putty.

There was barely anything to sand. If I had wallpapered, I wouldn’t have needed to sand at all. But I used a sanding machine and it went smoothly, maybe it's hard if you need to sand a lot by hand.

 

[JohanLun]

A chimney sweep might have opinions if part of a chimney is built in (if it is in use)

I would have skipped drywall on that wall and gone with old methods.

 

[Semiproffset]

A chimney sweep might have opinions if part of a chimney is enclosed (if it is in use)

I would have skipped gypsum on that wall and used old methods.

What opinion would the chimney sweep have, do you mean? I can't read anywhere that you wouldn't be able to glue gypsum to the chimney.