Sand the paint to remove the bubble and smooth the surrounding paint. Make sure the wall underneath is completely dry. Wait 24 hours if it's not.
Wipe away any dust with a lint-free cloth. Apply a thin coat of primer to the wall, extending it slightly beyond the bare area to cover a 1-inch portion of the painted wall. Let it cure for 24 hours if possible.
Apply new paint to the area lightly with a small brush or sponge brush. Use a feathering motion to blend it with the surrounding area.
Things You Will Need
- Sandpaper (300 or 400 grit)
- Lint-free cloth
- Small light paintbrush or sponge brush
- Recently plastered walls may still have moisture in them. Wait for them to cure before painting.