DESCRIPTION

Patterned cracking in the paint film resembling the scales of an alligator. These cracks generally do not expose the substrate (e.g. the surface that has been painted).

POSSIBLE CAUSE

Natural aging of oil-based paints due to temperature fluctuation. The constant expansion and contraction results in a loss of paint film elasticity.
Application of an extremely hard, rigid coating, like an oil enamel, over a softer, more flexible coating.
Application of a topcoat before the primer or basecoat is dry.
Application of a coating over a glossy finish.

SOLUTION

Remove old paint by scraping, sanding, chemical removers, or a heat gun. Follow all manufacturers’ cautions when using chemical removers or heat guns.
Remove all surface contamination by washing with  professional prep wash concentrated cleaner or other appropriate cleaner; rinse thoroughly and allow to dry.
Glossy surfaces should be sanded dull. Follow label and data page directions for the appropriate drying time for any product.