We have just taken down some wallpaper to find there is a thin layer of paint under the lining paper, some of it coming off, some not.
Everything I have read says we need to scrape it all off but I don't think it is going to be possible without damaging the plaster.
Years ago some workmen repaired peeling paint in our bathroom using a paint type thing called 'smooth'. They just put i tover the top and it was fine for the years until we left the house.
Looking online the only thing I can find is called Sandtex Smooth and it says it is for exterior masonry. Does anyone know if this is an option? Or what else we could do?