InterNACHI Roofing Practice Exam

The term that describes the small cracks or fissures that appear in the surface of roll roofing over time is "alligatoring." This phenomenon occurs primarily due to the aging and degradation of the roofing material, which is often a result of prolonged exposure to the elements, such as ultraviolet (UV) rays, moisture, and temperature fluctuations.

Alligatoring manifests as a network of cracks that resemble the skin of an alligator, hence the name. This condition can compromise the integrity of the roof, potentially leading to leaks and other issues if not addressed. It is important for roofing professionals to recognize this condition as it may indicate that maintenance, repairs, or replacement is necessary to prolong the roofing system's lifespan and ensure it continues to protect the structure effectively.

Other terms mentioned, such as peeling, fracturing, and weathering, refer to different issues not specifically indicative of the surface cracking characteristic of alligatoring.