How to Fix Peeling Paint
Peeling paint is almost always a moisture or adhesion problem — paint over a wet surface, paint applied without proper priming, or moisture migrating from inside the wall. If you don't fix the root cause, the new paint will peel again. This guide covers how to fix it right the first time.
Likely Causes
- 1Moisture behind the painted surface (most common cause)
- 2Paint applied over a dirty, glossy, or unprepared surface
- 3Paint applied in cold or humid conditions
- 4Incompatible paint layers (oil over latex or vice versa)
- 5Age — old paint loses adhesion and fails from the substrate up
Cosmetic unless the peeling is associated with moisture, mold, or lead paint (homes built before 1978).
How to Fix It: Step by Step
- 1Find and fix the moisture source first
If peeling is near a window, vent, or exterior wall, find where water is getting in. Painting over active moisture damage will fail within months.
- 2Remove all loose paint
Scrape every loose edge until you reach sound paint. If you stop scraping too soon, the peeling will continue under the new paint. Use a wire brush on stubborn areas.
- 3Sand and feather edges
Sand the edges of the remaining paint smooth with 80–120 grit sandpaper. You should not be able to feel the edge with your fingertip.
- 4Prime the bare area
Spot-prime all bare wood or drywall. For exterior surfaces, use an oil-based primer for maximum adhesion. For interior, PVA drywall primer works well.
- 5Apply two coats of paint
Use high-quality exterior paint for outdoors (it matters enormously). Let each coat dry fully before the next.
Materials & Tools Needed
Warning Signs It's Getting Worse
- ⚠Peeling spreading rapidly across large areas
- ⚠Soft or rotting wood underneath the paint
- ⚠Chalky, powdery paint surface (indicates it's time to repaint the whole surface)
When to Call a Professional
Call a painter for whole-house peeling (often requires a full repaint), and call an environmental testing service if your home was built before 1978 and has peeling exterior paint — lead paint requires specific handling procedures.
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