u/SchrodingersCigar

A follow-on from previous cracked plaster disaster post here. https://www.reddit.com/r/Plastering/s/nb0dBvaxNT The plaster in this alcove was basically delaminated and not bonded with the first coat. The first coat also not bonded with the plasterboard. This was most noticable in the area directly inline with the window, much less of a problem and well adhered lower down. So lesson learned.. keep the window shut and dont hang around.

I’ve now scrapped off anything loose, and chucked blue grit over it. I’m not sure what to do with the external corner where the blue stops and the other plaster starts. There is a metal corner bead in there. Do i need to hack off the plaster in the return also or ?

Basically i’m not sure how to skim up to this corner when the bead is already buried.

Multifinish, two coats on to plasterboard. Skrim taped joins and the internal corner.

I used half an extratime sachet with half a bag of plaster (weighed) with just under 6L water.

Where did i go wrong?