Painting & Decorating

Preparing and filling mixed wall surfaces using gypsum based plaster, presumably lime based plaster and smoothed concrete/cement

Anonymous user 23/02/2024 - 2.52 PM

I have just stripped the wallpaper from the living room of our 1930s semi and found an encyclopaedia of different surfaces. There is some pristine modern gypsum based plaster, some grey/whitish (has speckles of grit in it - presumably it is a lime-based) plaster - some of this has a flaky gloss paint on it. Something that looks like smoothed concrete/cement (dark grey). Some of the plaster is fine, some is "dimpled" (like a golf ball), some is a little flaky. There is a bit of bare pine and oak thrown in for good measure too. Don't forget the myriad of random filled patches of various types. My walls are like a museum of finishes. So my question. How to make the walls 'good' without re-skimming. My current plan is to: Sand it (120 grit) Fill it (need recommendations for suitable filler that will work in the above conditions). Sand it again. Seal it (1:4 PVA solution). Hang 1200 lining paper. 2 coats emulsion. Is that sensible? My main concern is what is a good type of filler to use in such varied conditions?