1. Re-plaster the room for less
Use thick lining paper to give walls a smooth surface, then coat with emulsion paint.
- Get rid of stained patches by smoothing the plaster with sandpaper.
- Use oil-based paint to seal the stain, leave to dry, then paint with oil-based eggshell.
- If a leak makes internal plaster bubble, scrape out the damaged plaster and repair with ready-mixed plaster.
- Prime with emulsion diluted with up to 10% water, then paper or paint with emulsion.