Galvanized Metal Roof Lifespan

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.

Galvanized metal roof lifespan.

Roofing of this kind has many advantages over asphalt roofs and has a life span from 20 to 100 years depending on grade. The expected lifespan of a metal roof is 30 to 50 years in florida with an average of 40 years. Metal roofing runs the gamut of price and quality starting around 115 per square for standing seam panels in aluminum or steel. Unpainted g 90 galvanized steel is typically warranted against corrosion for 20 years under normal conditions.

The metal roofing alliance recommends g 90 galvanized steel for roofing which has 90 ounces of zinc per square foot. When the base materials oxidize they create a protective patina. This is especially true when you invest in a metal roof engineered from galvanized steel. Metal roofs are attractive durable and can last up to 70 years.

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.