Galvanized Metal Roof Lifespan

What s more many metal roofs feature space age cool roof paint technology that reflects the sun s radiant heat away from your home.

Galvanized metal roof lifespan. This is especially true when you invest in a metal roof engineered from galvanized steel. The metal roofing alliance recommends g 90 galvanized steel for roofing which has 90 ounces of zinc per square foot. Unpainted g 90 galvanized steel is typically warranted against corrosion for 20 years under normal conditions. 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. Roofing of this kind has many advantages over asphalt roofs and has a life span from 20 to 100 years depending on grade. 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. Metal roofs are attractive durable and can last up to 70 years.

The expected lifespan of a metal roof is 30 to 50 years in florida with an average of 40 years.