How to Fix Water Damage on Walls Before Painting

Painting over water-damaged walls without fixing the problem first is a recipe for disaster. The stains will bleed through, the paint will bubble, and the damage will keep spreading. If you’re an Auckland homeowner dealing with water damage, here’s the right way to repair it before painting.

Step-by-Step: Fixing Water Damage on Walls

1. Identify & Repair the Source

   • Find where the water is coming from (leaks, roofs, plumbing, condensation) and fix it first.

2. Dry the Area Completely

   • Use fans or dehumidifiers — painting over damp surfaces guarantees failure.

3. Remove Damaged Material

   • Scrape away peeling paint, bubbled gib, or crumbling plaster.

4. Treat Mould or Stains

   • Clean with a mould treatment or stain blocker.

5. Repair & Plaster

   • Patch gib, skim coat with plaster, and sand smooth.

6. Prime the Surface

   • Use a stain-blocking primer to prevent marks showing through.

7. Repaint

   • Apply 2 coats of premium interior paint.

Why Professional Help Matters

Water damage often hides deeper issues like leaks or mould. At Key Painting, we:

• ✅ Repair and plaster damaged walls

• ✅ Use mould- and stain-resistant primers

• ✅ Ensure a flawless finish that lasts

• ✅ Provide free instant estimates via our