Updated July 2026 Quick answer: Most residential metal roofs last 40 to 70 years. Exposed-fastener steel systems may last 20 to 40 years, while standing-seam roofs often last 40 to 70 years or longer. Premium copper and zinc roofs can last 70 to 100 years or more. A metal roof is not one standardized product. Its lifespan depends on the metal, protective coating, panel design, fastener system, installation quality, climate, ventilation and maintenance. That is why two homes described as having “metal roofs” can have very different replacement timelines. A properly installed standing-seam roof with concealed fasteners should generally outlast More…