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. The expected lifespan of a metal roof is 30 to 50 years in florida with an average of 40 years. Materials used in corrugated metal roofing corrugated metal roofing is normally made from metals such as stainless steel copper zinc and aluminium. Metal roofing runs the gamut of price and quality starting around 115 per square for standing seam panels in aluminum or steel.

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. What s more many metal roofs feature space age cool roof paint technology that reflects the sun s radiant heat away from 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. When the base materials oxidize they create a protective patina.

Roofing of this kind has many advantages over asphalt roofs and has a life span from 20 to 100 years depending on grade.