What negative effect do UV rays have on roofing materials?

UV rays can lead to degradation of roofing materials because they break down the chemical bonds in the material. This process, known as photo-degradation, weakens the structural integrity of roofing products over time. For instance, asphalt shingles can lose their granules and become brittle when exposed to prolonged sunlight, leading to cracks and potential leaks. Similarly, other roofing materials, like rubber or certain metals, may experience fading, warping, or deterioration when regularly subjected to UV radiation.

The other choices do not accurately represent the effects of UV rays on roofing materials. Enhancing energy efficiency, color retention, or prolonging lifespan are not associations of UV exposure; rather, UV rays typically have detrimental effects on the longevity and performance of roofing systems.