HAAG Certified Reviewer Practice Exam 2025 – Complete Study Guide

The choice of UV exposure as a significant environmental factor affecting roofing material longevity is well-founded. Over time, ultraviolet (UV) radiation from the sun can degrade various roofing materials, especially those made from asphalt, rubber, or certain plastics. Continuous exposure to UV rays causes chemical breakdown in these materials, leading to issues such as cracking, chalking, or loss of flexibility. This deterioration can ultimately compromise the integrity of the roof, reduce its effectiveness in protecting the structure underneath, and shorten its overall lifespan.

While humidity, wind speed, and temperature extremes can also influence roofing materials, they do not uniformly impact all types of roofing in the same manner as UV exposure. For instance, high humidity can lead to mold or mildew in certain climates, and strong winds can physically damage roofing systems, but these factors can vary significantly based on local conditions and the specific materials used. In contrast, UV exposure is a consistent and relentless force that affects roofing materials regardless of location or other environmental conditions. Therefore, considering the pervasive impact of UV exposure over time, it stands out as a critical factor in determining the longevity and durability of roofing materials.