CertainTeed's Belmont® UL 2218 Class 3 Impact Resistant and Algae Resistant shingles are the ideal roofing solution for homeowners who are looking for a durable and reliable roofing option that is also resistant to unsightly algae growth. These shingles are made from high-quality materials that are specifically designed to resist the growth of algae and other environmental factors that can impact the appearance and performance of a roof. One of the key features of CertainTeed's Belmont shingles is their Underwriters Laboratories (UL) classification. This classification means that these shingles meet strict industry standards for quality, safety, and performance. The UL classification is a third-party certification that ensures the shingles are safe and reliable for use in roofing applications. In addition to their UL classification, CertainTeed's Belmont shingles are also backed by a 30-year algae resistance warranty. CertainTeed's Belmont shingles are a great investment for homeowners. The durability and longevity of these shingles mean that they require less maintenance and...See More fewer repairs over time, which can save homeowners money in the long run. The installation process for Belmont shingles requires fastening, steep slope, and flashing requirements that are special because of the thickness, design, and weight of the product, and they can be easily installed on both new and existing roofs. In conclusion, CertainTeed's Belmont shingles are an excellent roofing solution for homeowners who are looking for a high-quality, reliable, and durable roofing option that is also resistant to unsightly algae growth. The UL classification ensures that these shingles meet strict industry standards, and the 30-year algae resistance warranty provides homeowners with confidence in their roofing investment. See Less