Tried a different way to handle those tricky inside corners on a vaulted ceiling job

I was working on a house in Springfield last month with a 12 foot vaulted ceiling and the inside corners were a real pain. Instead of trying to tape them perfectly in one go, I started using a 4 inch knife to lay in a thin coat first, let it dry for an hour, then come back with the 6 inch. It stopped the mud from sagging out of the corner so much. Has anyone else found a better trick for keeping that mud where it belongs on high angles?

2 comments

2 Comments

ivan401mo ago

An hour is barely enough time for that thin coat to set up on a steep angle. I’ve seen mud still wet underneath after sixty minutes, and the whole thing just slides down when you go over it. Waiting at least two hours, like Lisa said, is the only way to be sure it won’t slump and ruin your corner.

lisa_ross161mo ago

Letting that first coat dry for an hour is the key part. I usually wait a full two hours on a high angle or it can still slump.