The corregated PVC roofing is very strong and sheds water and snow very well. We used drywall screws to attach it to the roof, which is constructed of 2x4s and plywood. We bought the sheets at Menards, a local home improvement store. They are overlapped by several inches and the slope drains off the back. It comes in several colors, but we chose white to keep it cooler in the summer.
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