I've been helping some friends by doing a few drywall patches for them
after they had some plumbing work done, only to discover the hole cut
in their kitchen ceiling seems to be in cement board, not drywall.
It's about 10" x 5", and it's not on a stud. The ceiling also has the
swirl-pattern, popcorn-texture plaster.
Now, I don't know if cement board is common in kitchen ceilings. I've
never come across it before, but I can understand why it makes sense
to have fire resistance there. I don't think it's required in
Massachusetts, though I've never done a new kitchen ceiling.
What's the best way to go about patching this? Should I cut back to a
stud and put in a new piece? Is there a practical way to put a piece
in without cutting a lot more out? (I'm a little worried about
cutting straight edges in it.) Can it be patched with some wet-
I haven't had a chance to go shopping to see what's available yet, but
I figured I'd ask ahead of time so I'd have a little more background
tomorrow when I do.
The ridiculous thing is that the hole accomplished nothing more than
telling the plumber he needed to cut a hole through the behind-the-tub
(much more easily repairable) drywall instead.