Loose paint, bubbling and discoloration of the paint film, especially around body fittings, panel edges and seams.
Causes
- Corrosion of the metal substrate, resulting in loss of adhesion of the paint. This is frequently caused by:
- Exposure of bare metal surfaces by accidental damage, or by leaving drilled holes untreated.
- Exposure of bare metal surfaces due to destruction of the paint film by contamination.
Prevention
- Ensure that all metal surfaces are treated with the correct metal treatments or etch primer prior to painting.
- Repair any damage to the paint film as soon as possible. Always treat any newly exposed metal edges immediately.
Correcting
- Strip the paint from the affected area down to the bare metal
- Remove all existing corrosion
- Treat the surface with the correct metal treatments or etch primer
- Repaint
