Term: paint adhesion loss

Paint adhesion loss refers to the failure of paint to properly stick or bond to the surface it was applied to, resulting in the paint peeling, flaking, or blistering. This issue can occur between the paint and the substrate (such as timber, plaster, or metal) or between layers of paint (e.g., new paint over old paint).

Common Causes of Paint Adhesion Loss:

• Poor surface preparation (e.g., dirt, grease, or dust left on the surface)
• Moisture intrusion (e.g., water leaks or high humidity)
• Incompatible paint systems (e.g., applying latex over oil-based paint without proper priming)
• Painting over glossy or smooth surfaces without sanding or priming
• Application in unsuitable conditions (e.g., too hot, too cold, or too humid)

Prevention:

• Thoroughly clean and prepare the surface
• Use appropriate primers
• Ensure compatibility between paint layers
• Follow manufacturer’s application guidelines

In the Australian painting industry, maintaining proper adhesion is critical for durability, aesthetics, and compliance with standards such as AS/NZS 2311:2017 – Guide to the painting of buildings.