I’m stripping wallpaper off a celiling and the bad stuff looks like its been put on top of a previous layer of paint and paper. This is all in good nick and I’m hoping to paint straight on to it, except for one corner where I stripped too much off when I got started. I now have a patch about 60cm x 40 through various layers of paint / wallpaper through to plaster. Its only a millimetre or so deep but looks unsightly.
Rather than remove all of it to get a uniform ceiling to paint, I want to just make this small section good and then paint the rest. There are also a number of little holes in this paint / paper layer that I have accidentally nicked with the scraper elsewhere.
Can I build up hole with some thick paint like polycell basecoat? Can this also be used to fill the hairline cracks in coving as well?