Identical asphalt shingles may perform differently depending on what factor?

The performance of identical asphalt shingles can vary significantly based on climate zones because different climates impose varying levels of stress on roofing materials. For instance, shingles in extremely hot areas may be subjected to intense UV radiation and higher temperatures, which can lead to faster degradation. In contrast, shingles in colder regions may experience issues like ice dams, snow accumulation, and temperature fluctuations that can impact their performance and lifespan.

In addition to temperature and weather conditions, factors like humidity and precipitation also play a critical role in how shingles age and perform over time. For example, in humid climates, the risk of mold and algae growth increases, potentially affecting the shingles' integrity and extending their lifespan. Therefore, understanding the specific climate zone is essential for predicting how well identical asphalt shingles will perform in different regions.