Granules refer to the small, colored particles that are embedded in the surface of asphalt shingles. These granules are made from a variety of materials, including crushed rock, ceramic, and minerals, and are applied to the surface of the shingle during the manufacturing process.
Granules serve several important functions in asphalt shingles. They provide a protective coating that helps to protect the shingle from ultraviolet (UV) radiation, which can cause the shingle to deteriorate over time. The granules also provide a decorative element, adding color and texture to the roof and helping to create a more attractive and visually appealing appearance.
In addition to their functional and aesthetic benefits, granules can also provide important information about the quality and durability of an asphalt shingle. The size, shape, and color of the granules can indicate the quality of the shingle and the level of UV resistance it provides. Granule loss can also be an indicator of a shingle that is aging or has been damaged by weather or other factors.
Proper installation and maintenance of asphalt shingles can help to ensure that the granules remain intact and provide the necessary protection and aesthetic benefits. This includes proper ventilation and insulation to prevent excess heat buildup and damage to the shingles, as well as regular cleaning and inspection to identify and repair any areas of granule loss or other damage.
Overall, granules are an important component of asphalt shingles and play a critical role in the long-term durability and performance of the roof.