Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.
Fiberglass shingles are built on a core, or mat, of fiberglass reinforcement. Asphalt coating is applied directly to this mat and protective granite color granules are embedded into the coating. Fiberglass shingles carry a Class a fire resistance rating from Underwriters Laboratories (UL), the highest rating available.
