Term: flaking

In painting and surface preparation, "flaking" refers to the process where paint or coating detaches from the surface in small, thin pieces or flakes. This typically occurs when the paint loses adhesion due to factors such as:

• Poor surface preparation (e.g., painting over dirt, grease, or loose material)
• Moisture infiltration behind the paint film
• Use of incompatible paint systems (e.g., applying oil-based paint over latex without proper priming)
• Age and weathering (UV exposure, temperature changes)
• Application of paint to a damp or unprimed surface

Flaking is a common sign of paint failure and often indicates the need for thorough surface preparation and repainting. In professional painting, addressing flaking involves scraping or sanding off the loose paint, treating the underlying cause (such as moisture), and properly priming before applying new coatings.