SFNSM EPDM Waterproofing Membrane for Roof Underlayment 16.5ft X 40in - 50mil Self-Adhesive Rubber Roofing Materials Heavy Duty Peel and Seal Roofing Roll for Patio, Rv, Metal Roof Repair

["Solves A Leak In Your Flat Roof: Our peel & stick roofing underlayment serves as the second waterproof barrier, effectively blocking the infiltration of rainwater, snow into the building structure, solving water leakage problems in roofs, walls, basements, and other areas.","Keep Your Roof In Good Condition For Many Years: Made from EPDM rubber, it is withstands both high and low temperatures, and is puncture and tear-resistant. It is not easy to age after long-term outdoor use, making it the best choice for building waterproofing materials.","Wide Coverage Area: The EPDM rubber roofing membrane underlayment size is 16.5ft x 40in, with a thickness of 50 mil. It can be freely cut according to actual construction needs, easily meeting the coverage requirements of conventional roof engineering and local repairs.","High-Strength Butyl Self-Adhesive Layer: It can bond securely to a variety of surfaces, including wood, concrete, and metal, with adhesion increasing over time. The slip-resistant embossed surface ensures safer and more secure when used with asphalt shingles or metal roofing.","Multi-Purpose: It can be laid under shingles as a waterproofing underlayment to prevent roof leaks. It can also be used as an exposed waterproofing layer on camper roofs, sunroom roofs and patios, as well as for leak-proof repairs in areas such as window sills, chimneys and around pipes."]