![]() ![]() If a heavy-duty hailstorm-or foot traffic-puts dents your metal roof, it may look bad, but the roofing itself isn’t compromised. This rating indicates that the roofing has withstood UL’s most severe impact test standard-a 2-inch diameter steel ball dropped from 20 feet-without tearing, fracturing, cracking, or splitting. In areas where hail occurs frequently, you want metal roofing with a Class 4 rating. REALITY: Hail can damage roofing of any kind, if the hailstones are big enough. Today’s metal roofing products can mimic wood shakes, slate, clay tile, and even granule-coated asphalt, making it likely there’s a version to match your house style. REALITY: While metal roofs are a familiar sight in rural areas-on houses, barns, and industrial buildings-they can work on almost any architectural style. But if a bolt does hit a metal roof, it won’t catch fire. Typically, lighting strikes the tallest object in the vicinity, like a chimney or a tree. That’s why there are no building codes that require grounding or special protection for metal roofs. REALITY: Metal is no more attractive to lightning than any other roofing material. If a metal roof doesn’t leak in that time, there’s little chance of it leaking afterward. Tip: Look for a roofer who will offer a warranty that covers labor in case of a leak for at least five years after installation. ![]() Or visit the Metal Roofing Alliance’s website to connect with local pros and to view their websites for examples of their work. You can start with an online product search, and then work directly with the manufacturer to find a qualified contractor in your area. How to Find the Right ContractorĪ quality job depends on hiring a pro who specializes in the style of metal roofing you’re after. Pros prefer polyurethane sealant formulations that are made to adhere to metal and to flex with it. Invest in the right sealant If you see tubes of home-center silicone on the job, that’s a bad sign it won’t last. This material also seals around each fastener penetrating the roof.Īllow the metal to move Slip sheets, typically rosin paper, laid between the roofing and the underlayment, allow the metal to expand and contract freely, and protect the integrity of the underlayment. Water will get past metal joints the best way to stop it is with a high-temperature, waterproofing underlayment stuck to the entire roof deck. Shown: An electric seamer crimps panel edges for a tight, no-leak joint. Up ahead: a look at materials and styles to consider, plus how to get the job done right, so your house will stay cool and dry for decades to come. And while it commands a premium-the components are expensive, as is the skilled labor for installation-a metal roof can boost a home’s resale value by up to 6 percent in some areas. Today, metal roofing is on the rise again: Its popularity has nearly quadrupled in the last 20 years. By the 1920s, lightweight, no-rust aluminum entered the market, as did paint coatings that added color and longevity to both aluminum and steel roofs. By the mid-1800s, metal roofing became more common as mass-produced steel began covering ordinary homes and barns. In America, copper and lead roofs appeared on important public buildings beginning in the 18th century, including New York’s City Hall in 1764. And properly installed, they need virtually no upkeep. They can save energy, thanks to their ability to reflect the sun’s heat. They’re durable, enjoying a life span of up to 50 years or more. They’re strong, able to survive hurricanes, hail, and wildfires. The advantages of metal roofs are tough to ignore.
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