Painting & Decorating

How to avoid patches when painting over old oil based paint with bare plaster patches

Anonymous user 23/02/2024 - 2.49 PM

We have removed old wood chip paper from two walls and there is what appears to be an old oil based paint underneath, there are thin lines of bare plaster where the edges of the paper were and a few patches where the paint has come off. I have been warned that if I were to just paint over as is, I would get visible patches where the bare plaster patches are, even when sealed first, because of the way the pigment would sit over the oil base in comparison. Can someone please recommend a product which could be put on first to avoid this happening? We have already had the ceiling and two other walls skimmed over artex, I have already painted these with one part water and 5 parts dulux trade matt paint, as advised by dulux on the tin, and would like the remaining two walls to look as good. Many thanks