Attractive and affordable, the Ondura corrugated asphalt roofing system is ideal for a variety of applications including residential, commercial, and agricultural jobs, as well as for re-roofing and DIY projects. Ondura is also recognized by the EPA as an Environmentally Preferable Product, making it the greenest roofing material on the market. Ondura's very construction makes it different and makes it a superior roofing and siding material at the same time. Its corrugated design enables it to be both lightweight (18 lb. per sheet) and strong, while its total asphalt impregnation means it outlasts most other roofing (including metal). Ondura is easy-to-cut and install, even over existing roofing like metal or asphalt shingles (up to 2 shingle layers). No special tools required. It can also be applied over solid decking or open purlins (non-residential structures). In a re-roofing application you are spared the bother and expense of having to tear off and dispose of an old roof. Unique appearance that complements both contemporary and traditional style homes. High-wind resistance sheets have withstood 125+ MPH winds. Will never rust or corrode. Not affected by fertilizers or farm chemicals. Limited lifetime warranty. 48" x 79".