Recently, I had some contractors come in and replace my garage lintel. Afterwards, I found that they'd had to break some of the white material that makes up the ceiling of the garage. It looks to me kind of like plaster on top of drywall with some sort of wire substrate.
I'd like to just patch this up to make it look nicer, and to ensure there's not damage from general moisture, etc. Does this look like something I could just plaster over?