alligatoring

(1) Cracking caused by shrinkage of the bituminous surface of built-up roofing or parking areas, or the exposed surface of smooth-surfaced roofing, in which the cracks have the scaly look of an alligator?s hide. (2) Cracking of a finish coat of paint, usually caused by its application before undercoats or primer are completely dry, or by exposure of the surface to extreme heat.