Paint alligatoring is a form of paint failure where large cracks form in the surface layer only, resulting in the appearance of an alligator hide.
- Applying paint over a porous, unsealed surface, resulting in rapid absorption and improper film formation.
- Applying paint in high heat or very low humidity, causing solvent to evaporate too rapidly.
- Applying second coat of paint before first coat has completely dried.
- Applying a harder, less flexible paint or coating over a softer or more flexible one (a brittle oil-based paint over a more flexible latex paint).
To fix paint alligatoring remove all loose paint, sand edges smooth, then prime and seal the surface with an appropriate primer for the specific application or surface to be painted. Once primer is completely dry, apply a fresh coat of paint.