What is a common feature of shingle surfaces that protects them from the elements?

Mineral granules are a common feature of shingle surfaces that serve a vital protective role against the elements. These granules are usually made from materials like crushed stone or ceramic and are embedded in the asphalt of roofing shingles. Their primary function is to provide UV protection, reducing the deterioration of the shingles from sunlight exposure. Additionally, mineral granules help to protect the shingles from physical damage caused by hail, debris, and other environmental factors, enhancing their longevity and overall performance in weather conditions. The granules also contribute to the aesthetic appeal of the shingles, offering a variety of colors and textures.