Lifespan Galvanized Metal Roof

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

Lifespan galvanized metal roof.

The galvanized roof depending on climatic factors might show a light rust hue. Metal roofs are attractive durable and can last up to 70 years. 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.

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

Unpainted galvalume has a lifespan up to 40 years. This is the result of the zinc layer wearing away leaving the steel substrate exposed.