Close up image of an exterior wall where the pain film has loosen, and you see cracks and roll at exposed edges.

Peeling from Wood – EXTERIOR

Occurs when wet wood expands and contracts from moisture and temperature change, causing the paint film to loosen, crack and roll at exposed edges and fall off. Where there is a primer and topcoat, or multiple coats of paint, peeling may involve some or all coats.

Causes

  • Seepage of moisture through uncaulked joints, worn caulk or leaks in roof or walls.
  • Excess moisture escaping through the exterior walls (more likely if the paint is oil-based).
  • Inadequate or improper surface preparation.
  • Use of low-quality paint.
  • Applying an oil-based paint over a wet surface.
  • Earlier blistering of paint (see Blistering).

Solutions

  • Try to identify and eliminate source of moisture.
  • Prepare surface by removing all loose paint with scraper or wire brush, sand rough surfaces, prime bare wood.
  • Repaint with a high-quality exterior paint for best adhesion and weather resistance.

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