Henry HE740915 Roofing Underlayment, 33.3 ft L, 100 sq-ft Coverage Area, Asphalt

Henry Eaveguard Self-adhered shingle underlayment provides a secondary line of defense to keep water that can get behind shingles from infiltrating further to help ensure the longevity of your roof. With direct-to-deck application, Eaveguard is designed to offer protection against water penetration caused by wind driven rain or ice damming when installed in vulnerable areas of steep-slope roofs.