Chalking
Description
A chalky dusting or powdering at the paint surface, often associated with old, weathered paint film.
Cause
Precipitation of elements within the paint. This may be due to:
- Incompatible or defective materials within the paint.
- Degradation of the binding agent.
- Degradation of pigment.
Prevention
- Use recommended materials.
- Avoid exposure to ultraviolet light (strong sunlight) and harsh shampoos.
Rectification
Flat, compound and polish the surface to restore the gloss. In severe cases repaint the topcoat.
Other Defects:
Πίσω