How to build a new stud wall against an existing aerated concrete wall?

[ZipLock]

I have a wall of plastered lightweight concrete that is about 9 cm thick. Part of this wall will be demolished and replaced with a stud wall as a continuation of the lightweight concrete wall.

How do I anchor the new wall to the old one so that it becomes stable and I can avoid cracks between the plasterboard and plaster?

 

[Stefan N]

I had constructed it so that the plasterboard went all the way over the lightweight concrete, otherwise it will crack.

 

[ZipLock]

I would have built so that the drywall went all the way in over the aerated concrete, otherwise it will crack.

Unfortunately, it becomes very difficult to continue drywalling the existing wall. There is a door and a whole kitchen in the continuation of this wall.

 

[tommib]

It will crack at the joint if you can't apply some form of continuous surface layer. You can try with acrylic sealant or similar, but it's likely that you'll get a crack.

 

[ZipLock]

It will crack at the seam if you can't apply some form of unbroken surface layer. You can try with acrylic sealant or similar, but it's likely you'll get a crack.

Could one apply a renovation wallpaper over the seam?

 

[Anna_H]

You can, but it will probably crack as well. I've tested it :-D

 

[bakterie]

Place a list over the skarven and attach it only to the wooden wall.

 

[dextrocell]

Why don't you continue with aerated concrete? Forget about gypsum, OSB studs, etc. If you have the same material, I think you minimize the risk of different behaviors. Perhaps it's possible to drill in/anchor reinforcement between the shifts?

 

[ZipLock]

Why don't you continue with aerated concrete? Forget about gypsum, OSB studs, etc. If you have the same material, I think you minimize the risk of seeing them behave differently. Maybe you can drill in/dowel reinforcement between the shifts?

Yes, that would be an option, but I've never worked with aerated concrete and the new wall will have wall cabinets, so I think studs and boards are better.