CertainTeed's RoofRunner is a synthetic roofing underlayment that delivers superior protection for residential roofs. Made from high-quality materials, it offers excellent resistance to water, wind, and environmental factors. This scrim-reinforced underlayment is designed for use on roof decks as a water-resistant layer beneath asphalt shingles. Its lightweight design makes it easy to handle, making it ideal for roofing contractors. A key benefit of RoofRunner is its outstanding water resistance. The unique design allows it to shed water quickly, preventing moisture from penetrating the roof deck. With a top layer that repels water and an adhesive backing that seals out moisture, RoofRunner ensures reliable protection. Additionally, RoofRunner features a high-strength woven construction for wind resistance, helping keep the roof secure during storms. Its slip-resistant surface enhances safety for workers during installation. Easy to install with standard roofing nails, RoofRunner is compatible with most asphalt shingles, making it convenient for...See More contractors and homeowners alike. Designed to resist weathering, UV radiation, and other environmental factors, RoofRunner provides long-lasting protection and reduces the need for frequent repairs. In summary, RoofRunner is a high-quality underlayment that combines water and wind resistance with ease of installation and durability. Choose RoofRunner from CertainTeed for reliable protection in your roofing project. See Less