These corrugated roofing sheets are made of high-quality alloy steel and covered with galvanized coating, which provides good corrosion and rust resistance, weathering and UV resistance. Ideal for roofing or side panels for tool sheds, greenhouses, garden sheds, garages, and more garden storage, they are lightweight yet strong enough to last. And they are already pre-drilled and easy to use, if you have a house renovation plan in the near future, try this roof sheet.