Galvalume is a tough and durable coating used to protect steel. Galvalume metal roofing systems last longer, require less maintenance, and offer great value. A standing seam metal roofing system can use Galvalume. The metal panels are not fastened to the roof because of a hidden fastening system. Compared to other high-quality metal roofing materials, Galvalume costs the least amount of money. Galvalume is designed to combine the toughness and strength of zinc with the rust-resistance of aluminum.