Ah, the problem is the ceiling is already very low - my head touches it now, and a layer of plasterboard will make that worse, and probably won’t stop the plaster falling and presumably cracking the new board.
Aha, well that would be the serious grown up thing to do but it’s a lot of mess and would require us to empty the room. I had in mind a temporary fix pending later demolition, so was just wondering about those washer things.
Ah, the problem is the ceiling is already very low - my head touches it now, and a layer of plasterboard will make that worse, and probably won’t stop the plaster falling and presumably cracking the new board.