Metal roofing is ideal for energy star and is manufactured in both sheets and shingles. Metal roofing sheets are available in many different shapes, while metal roofing shingles can be made to look almost indistinguishable from wood shingles and shakes. Metal roofing is both lightweight and fire-resistant, and can be treated, if necessary, to make it corrosion and rust-proof. Metal roofing is available in Copper, Steel, and Aluminum metals.