Term: peeling

In painting and decorating, "peeling" refers to a common paint failure where the paint film lifts away from the surface, either in small flakes or large sheets. This typically occurs due to poor adhesion between the paint and the substrate or between paint layers.

Common Causes of Peeling:

• Moisture: Water infiltration behind the paint film (from leaks, condensation, or high humidity) can cause the paint to lose adhesion.
• Poor Surface Preparation: Painting over dirty, oily, or glossy surfaces without proper cleaning or sanding.
• Incompatible Paints: Applying a new coat of paint over an old one without checking compatibility (e.g., latex over oil-based without proper priming).
• Lack of Primer: Skipping primer on bare or porous surfaces can lead to poor adhesion.
• Excessive Layers: Too many layers of paint can cause stress and eventual peeling.

Prevention:

• Ensure surfaces are clean, dry, and properly prepared.
• Use appropriate primers and compatible paint systems.
• Address moisture issues before painting.
• Follow manufacturer’s instructions for application and drying times.

In the Australian climate, especially in coastal or humid regions, peeling is often linked to moisture ingress and UV degradation, so using high-quality exterior paints and proper sealing is essential.