GAF WEATHERWATCH 36 in x 50 ft 150 sq ft Polypropylene Roof Underlayment Oil Rubbed Bronze Light Coin Grip Dark Grey PVC Garage '203979022 Coin Grip Dark Grey PVC Garage Flooring Roll transfers increased torque to the fastener and allows easier access to tight areas Looks better: fiberglass reinforcement helps resist wrinkling buckling and lies flat under Shingles Protection against ice dams is required wherever the January average temperature is 25 ° F or lower or where there is a possibility of ice forming in the eaves (check local building codes for specifications in your area) Dependable: self seals around nails or metal roofing fasteners Saves labor: dual side selvage and split back release film help reduce labor Available in 1