Which factor can contribute to roof system performance deterioration?

The performance of a roof system can significantly deteriorate due to exposure to environmental elements such as sun, rain, and wind. Each of these factors can cause various types of damage over time. For instance, prolonged exposure to sunlight can lead to the degradation of roofing materials through ultraviolet (UV) radiation, causing them to become brittle and more susceptible to cracking or breaking. Rain can contribute to the erosion of roofing materials and can lead to water infiltrations if any existing weaknesses or failures in the roof are present. Wind can exacerbate these issues by lifting and displacing shingles or other roofing components, creating additional vulnerabilities.

In contrast, consistent humidity levels and stable outdoor temperatures typically do not pose as much of a direct threat to roofing integrity. While high humidity can lead to problems like mold growth, it does not affect the material in the same immediate and destructive way as exposure to harsh weather conditions. Regular maintenance is essential for roof longevity and performance rather than a contributing factor to deterioration. Overall, exposure to sun, rain, and wind directly impacts the physical condition and effective lifespan of roofing systems, making it the correct answer regarding factors contributing to performance deterioration.