Galvanized Metal Roof Lifespan

The metal roofing alliance recommends g 90 galvanized steel for roofing which has 90 ounces of zinc per square foot.

Galvanized metal roof lifespan.

Unpainted g 90 galvanized steel is typically warranted against corrosion for 20 years under normal conditions. Metal roofing runs the gamut of price and quality starting around 115 per square for standing seam panels in aluminum or steel. When the base materials oxidize they create a protective patina. And whereas many other roof options need to be replaced every 10 to 20 years a galvanized steel roof can last for decades when properly installed.

This is especially true when you invest in a metal roof engineered from galvanized steel. While other roofing materials typically need replacement every 10 to 20 years properly installed steel roofs should last as long as you own your home. The most common metal roof material we see in this area is galvalume which is a steel sheet with an electrolytically applied coating of a combination of zinc and aluminum to extend the lifespan. The expected lifespan of a metal roof is 30 to 50 years in florida with an average of 40 years.

Metal roofs are attractive durable and can last up to 70 years.