Hello,

I have torn down part of a lightweight concrete wall in my apartment. What remains looks like in the image below, and it now needs a bit of tidying up. My plan is to put a stud against the wall. The stud I plan to install is the same as shown in the second image. After demolition, the edge is no longer completely even, so there will be some gaps between the stud and the wall. My question is, how would you do this in a good way?

Exposed concrete wall edge next to a white fridge, surrounded by construction tools and materials. Partially demolished interior wall with exposed edges and hanging wires, awaiting repair and installation of studs to smooth uneven surface.
 

Best answer

See images below.
Buy metal corner beads.
Use suitable spacers that are glued with something like Casco Xtremefix that grips immediately.
Glue the corner beads in place.
Then plaster with gypsum plaster twice.
Apply wall filler.
Do not attach a wooden batten, wood moves and it will crack. What is shown in the picture took me a few hours + drying times.
Open doorway in a renovation project with metal corner beads installed, exposed wires, drywall sections, and construction tools visible on the floor. Doorway under renovation with exposed wiring, plastered walls, and a ladder nearby; unfinished edges and tools visible in the background.
 
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Henkan Sundberg and 3 others
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Just as @Johan456 says, the best thing is with metal corners. However, I usually "glue" them directly in gypsum plaster. Apply gypsum plaster and press the corners into the gypsum plaster so they are secure and gypsum plaster comes out of the holes. Carefully remove the excess gypsum plaster. Let dry and fill up with gypsum plaster so it is almost smooth. Let dry again and apply hand putty, sand, and paint.
 
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andvra
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@Johan456 @anders07 thanks for the clear and detailed answers! It's clear you know about this :) Planning to do this over the weekend, feels good to have an idea of how to proceed now.
 
Keep in mind that gypsum plaster becomes very hard and cannot be sanded, so it's better to fill two or three times (wet with a spray bottle beforehand) and be careful that it doesn't get too high.
It's easier to apply regular hand putty on it and then sand it.
 
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