Originally Posted by maxdustington
Everyone is wrong in this thread, that's a cornerbead: a thin metal angle that is nailed or screwed to outside corners to increase their durability. If you look at the part that has chipped off, the pattern stamped into it is unmistakable. Something could have whacked that and knocked the plaster off, but it doesn't look that distorted. It could have just popped the plaster off due to expansion or lack of adhesion.
You do not apply tape to beads, they stand proud of the board and you feather the plaster out to the surface of the drywall. To fix it, you need to remove the loose plaster, reapply new plaster and then paint it. The hard part will be replicating that stucco? finish.
Originally Posted by JTK
Originally Posted by WhyMe
Originally Posted by JTK
Hard for me to tell from the pic, but is that an outside corner?
yes. there is a truss connection at that corner and a great room there. its truss movement that opens and closes with the seasons.
Gotcha.
I'd put a piece of outside corner molding, or some type of molding over it and call it day.
Like said, if you do a conventional tape and mud repair, it's just going to crack again with the movement.
probably what i will have to do. any repairs in the past just don't last . as soon as the corner lifts it cracks