Right angle corner issue

[Rudie]

Hi

Had some boarding and plastering done end of last year but noticed that the corner isn’t a right angle, it’s way off. The plasterer isn’t interested so trying to fix myself. Am I right in thinking it’s best to layer up bonding/multi finish to get the edge to meet the screw heads (screws used to measure how much I need to pad out)? Thanks in advance.

 

[Wayners]

3mm corner bead.
Against the wall corner you can set a 3mm stop end bead.
When you are happy its square you can skim up using the beads as a guide.
Probably just use multi finish. Small area so stick some halftime powder in the plaster so it sets quick, and you can mix 3 or more layers to build out if required

Plenty of PVA on wall. 2 coats will do it

 

[Rudie]

Thanks wayners. The bottom is 15mm out so needs a lot adding to it so the 3mm corner bead won’t be anywhere near thick enough? I have a bead to add back in but only when the thickness reaches the screw head if that makes sense? Thanks