Eaveguard HE740916 Roofing Underlayment, 65 ft L, 3 ft W, AsphaltHenry 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. Unit: ROLL UPC: 694266156016 Model Number: HE740916