In message , Michelle Rossiter
m writes
I have a ceiling that originally had a wallpaper covering over the
plasterboard. This has been stripped off and whilst doing so some of the
cardboard has been ripped off with it leaving a rough surface. It also
looks like its been painted before wallpapering. Will I be able to plaster
over it if I PVA it well? Or will it need to be reboarded?

Are we talking about large areas here, or just the odd patch? I had PB
that had odd patches of the paper torn off, so filled with ready mixed
fine plaster, which worked well. Actually worked better than expected,
given that I have tried 'proper' plastering in the past, and failed
miserably.
--
Graeme