When I cut out my plasterboard piece, I missed that I needed to cut out a section at the bottom near the closet (the gap between the blue wall and the plasterboard). Now I have a gap around 6-8 mm which is about 13 mm deep. Is it OK to plaster, or will it not turn out well, and I should instead cut out a small piece of plasterboard and glue it there before plastering the smaller gaps?

Drywall corner with noticeable 6-8mm gap between blue wall and white gypsum board, showing plaster dust and unfinished edges for potential repair.
 
I had similar issues after replacing a window. So I went down to the local paint store and bought some filler that was plastic-based. It could be applied thickly and it didn't sink. I also believe Flügger has something similar in their range, but in a syringe.
 
Hello!
Buy Husfix or if you buy it at Byggmax the same product is called Filler but is significantly cheaper.
 
Plaster mortar works fine, but usually only comes in 25kg bags.
 
ardex has a small bag like 5 kg or something, it's reasonable
 
MB77 said:
Plaster works fine, though it usually only comes in 25kg bags.
There are also 5 kg, but they cost more than half compared to 25 kg.

Buy a 25 kg and make plaster castings of your faces with what's left over.
 
  • Like
Helhag and 2 others
  • Laddar…
Click here to reply
Vi vill skicka notiser för ämnen du bevakar och händelser som berör dig.