Category: Durability

Over 90% of all mechanical failures in service are attributed to fatigue, making its study crucial for engineers and scientists. The question of **what are the stages of fatigue life** is central to understanding how materials degrade and ultimately fail under repeated stress and strain over time.

According to industry experts, hail damage is one of the most common causes of roof insurance claims in the U.S. Knowing **which shingles are class 4** is crucial, as they provide the highest level of impact resistance and can significantly protect your home from severe weather.