Zincalume ® roofing is a steel roofing material coated with a mixture of aluminum, zinc and silicon. The trade name for Zincalume is Galvalume®. With the proprietary coating used, Zincalume roofing offers a long service life. The material is designed not only for use in roofing, but also wall panels, metal tiles and other metal building applications. The manufacturer backs it with a 25-year warranty for most uses.