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Fix Peeling Paint on an Interior Wall

The mistake most people make: painting directly over peeling paint. New paint won't bond to a compromised surface — it'll peel again within months. The fix is 80% prep and 20% painting.

Step 1 — Find the Root Cause (Do This First)

Step 2 — Remove All Loose Paint

  1. Use a paint scraper to remove every flaking piece. Don't skip this — any loose paint left behind will lift your new coat.
  2. Feather the edges with 120-grit sandpaper so there's no hard ridge between bare wall and old paint.
  3. Wipe the entire area with a damp cloth, then let it dry completely (24h minimum if near moisture).

Step 3 — Repair the Wall Surface

  1. Fill any gouges or uneven spots with lightweight spackling compound. Let dry, sand smooth with 150-grit.
  2. If the drywall paper is bubbled or torn, skim with joint compound and let cure fully.

Step 4 — Prime (Non-Negotiable)

  1. Apply a PVA or shellac-based primer to the repaired area. This seals the surface and gives paint something to grip. Skipping primer = peeling again in 1-2 years.
  2. For bathroom/kitchen walls with moisture history, use a mold-resistant primer.
  3. Let primer dry fully per label (usually 1-2 hours), then lightly sand with 220-grit for a silky surface.

Step 5 — Paint

  1. Apply two thin coats of interior paint in the correct sheen: eggshell or satin for moisture-prone rooms, matte/flat only for dry bedrooms/living rooms.
  2. Let first coat dry fully before applying second (check label — usually 2-4 hours).
  3. Feather the edges into surrounding wall to blend seamlessly.

Pro tip: If the wall has peeled multiple times in the same spot, the problem is almost always moisture behind the wall or a failed vapour barrier — no amount of paint will permanently fix it until you address the water source. Check for a slow plumbing leak, poor bathroom ventilation, or a missing exhaust fan before repainting.

What you need

Interior Paint Eggshell Finish

Eggshell or satin sheen is more durable and moisture-resistant than flat paint — the correct choice for kitchens, bathrooms, and hallways. Match your existing wall colour.

$30-55
Paint Scraper

Essential first tool — removes all loose and flaking paint down to a stable surface. A 3-inch blade handles most walls well.

$8-15
Interior Primer

Critical step — seals the repaired surface and ensures paint adhesion. Skipping this is the #1 reason paint peels again. For bathrooms, choose a mold-resistant formula.

$18-35
Paint Roller Kit

Roller + tray + covers give a smooth, even finish faster than a brush. Use a 3/8-inch nap roller for smooth drywall walls.

$12-22
Angled Paint Brush 2.5 inch

For cutting in edges, corners, and trim where the roller cannot reach. Angled synthetic bristle works best with latex paint.

$8-14
Sandpaper Assortment 120-220 Grit

Used to feather edges after scraping and smooth primer before painting. Buy an assortment so you have coarse and fine grits ready.

$8-14
Lightweight Spackling Compound

Fills gouges, cracks, and uneven spots in drywall before priming. Dries faster and sands easier than joint compound for small repairs.

$7-12
Drop Cloth Canvas

Protects floors and furniture from drips. Canvas is reusable unlike plastic sheeting, which slides around dangerously.

$15-25
Putty Knife Set

Used to apply and smooth spackling compound. A 3-inch and 6-inch knife together cover most repair sizes.

$10-18
Painter's Tape

Masks trim, outlets, and ceiling lines for clean edges. Remove while paint is still slightly wet to avoid pulling dried paint.

$6-10
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