Lifespan Galvanized Metal Roof

Metal roofs are attractive durable and can last up to 70 years. Roofing of this kind has many advantages over asphalt roofs and has a life span from 20 to 100 years depending on grade. Materials used in corrugated metal roofing corrugated metal roofing is normally made from metals such as stainless steel copper zinc and aluminium.

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The lifespan for unpainted galvanized roofing is 15 25 years depending on climate less where oceanic salt spray is common.

Lifespan galvanized metal roof.

When the base materials oxidize they create a protective patina. 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.

This is especially true when you invest in a metal roof engineered from galvanized steel. This is the result of the zinc layer wearing away leaving the steel substrate exposed. The galvanized roof depending on climatic factors might show a light rust hue. Metal roofing runs the gamut of price and quality starting around 115 per square for standing seam panels in aluminum or steel.

All coated steel materials however are vulnerable to corrosion at field cut edges although galvalume is the least affected table 2 10 below click to enlarge any image lists the advantages drawbacks compatibility and life expectancy of galvanized steel roofing aluminized steel roofing galvalume aluminum copper and zinc metal. Unpainted galvalume has a lifespan up to 40 years.