Loss of paint due to poor adhesion. Where there is a primer and top coat, or multiple coats of paint, peeling may involve some or all coats.
Seepage of moisture through uncaulked joints, worn caulk or leaks in roof or walls
Excess moisture escaping through the exterior walls (more likely if paint is solvent-based)
Inadequate surface preparation
Use of lower quality paint
Applying a solvent-based paint over a wet surface
Try to identify and eliminate the cause of moisture (see Efflorescence and mottling). Prepare surface by removing all loose paint with scraper or wire brush, sand rough surfaces, prime bare timber.
Repaint with a top quality water-based exterior paint for best adhesion and water resistance. Dulux recommends Dulux 1 Step® Primer Sealer Undercoat with Dulux Weathershield®.
Have you noticed small droplets appearing on your fresh coat of acrylic paint? Don't panic – it’s a normal part of the curing process. Find out more.