Galvanized Metal Roof Lifespan

High end metal roofing 22 to 24 gauge is popular in northern regions due to its ability to.

Galvanized metal roof lifespan. At the cheaper end you ll find thinner metals 26 to 29 gauge with a lifespan of 20 to 25 years. 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. Indeed that recent mcgraw. Metal roofs reflect solar radiant heat which can reduce cooling costs by 10 25.

Galvanized steel and galvalume offer excellent value cost over their service 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. Unlike other roofing materials such as asphalt with kynar 500 steel roofing there is no need for ongoing maintenance to ensure best long term appearance durability and longevity. The expected lifespan of a metal roof is 30 to 50 years in florida with an average of 40 years.

Table 1 of the standard contains requirements for minimum average coating thicknesses on various. The cost of a steel roof depends on the sheet profile. Plus many galvanized steel roofs have outstanding impact ratings and can even withstand tornado force gales. Closing thoughts on steel roofing.

While it is not possible to specify an exact thickness of a hot dip galvanized coating north american galvanizers will meet the requirements of astm a123 standard specification for zinc hot dip galvanized coatings on iron and steel products. At the top of the list of metal roofing pros the material s long lifespan is why most homeowners make the switch in either a re roofing or new construction.