Flaking

Flaking

Definition

Flaking refers to the condition in which the surface layer of a material-such as paint, varnish, or a coating-lifts and separates from its substrate, often resulting in the loss of small fragments. This is typically a sign of severe aging, environmental stress, or improper material application.

Causes

• Fluctuations in temperature and relative humidity causing expansion and contraction.
• Exposure to UV light, moisture, or chemical agents.
• Improper adhesion of layers during painting or coating processes.
• Aging of materials, leading to brittleness and loss of cohesion.

Implications

• Flaking can lead to permanent loss of the original surface or artwork.
• It is often a precursor to further deterioration if left untreated.
• Conservation-grade interventions may be required to stabilize the affected area.

Prevention and Conservation

• Maintain stable environmental conditions (temperature, humidity, light exposure) to minimize stress on surfaces.
• Use conservation-grade materials for mounting, framing, and glazing to protect against deterioration.
• Consult a professional conservator for any restoration or stabilization work.

Related Terms

• Cracking
• Delamination
• Blister
• Deterioration