I have a lathe and plaster ceiling in my upstairs hallway that's started coming away from the lathes. Now I know how to handle this with a modern ceiling, but this one is 100 years old and made with lime plaster. If the walls are anything to go by, it will be pretty crumbly, too.
I'm thinking of jacking it back into place, then giving it a liberal dose of PVA solution to try to stop it crumbling before attempting to stick it there with gauze and plaster of paris.
Does this sound reasonable? I would replace the ceiling, but I'm no plasterer and here in Hull anyone who is is booked up for eternity.
Ta!