Corrugated fiberglass roof panels are a practical choice for sheds, greenhouses, and patios, letting in soft, diffused light while keeping rain out. They're lightweight and easy to cut with a circular saw, so you can install them yourself without heavy lifting. Over time, they can yellow slightly, but they hold up well in weather and are much quieter than metal when it rains. Just be sure to overlap them correctly and use the right fasteners to avoid leaks. corrugated fiberglass roof panels 8