Fact or fiction? 5 myths about metal roofing
Posted: July 02, 2019 | Word Count: 700
Asphalt shingles may be the most popular roofing in the U.S. by volume, but metal roofing is gaining in popularity for its durability, longevity and low-maintenance benefits. Still, many people unfamiliar with the product have misconceptions about this quality roofing option.
Myth #1: Metal roofs are loud
One of the biggest misconceptions of metal roofs is that they are loud during a rainstorm and unbearable during severe weather, making sounds like repeatedly dropping objects on tin. In reality, residential metal roofs are fastened to the roof deck, not open rafters. Metal roofs can be applied over multiple layers of old asphalt shingles, so the sound insulation between the metal shingles and your ears could reduce the noise to potentially less than more traditional forms of roofing.
Myth #2: Metal roofs attract lightning
The Metal Construction Association has released several technical bulletins outlining research that shows metal roofs are no more likely to be struck by lightning than other types of roofing. The factors that do affect lightning strikes include topography of the surrounding area, the height and size of the building and the frequency and severity of storms in the area.
"Research shows that the material used in roof construction does not influence the risk of a lightning strike," says Karl Hielscher, MCA’s executive director, in a press release. "In fact, the presence of a metal roof really shouldn’t statistically increase or decrease the chances of a lightning strike. There are many other factors that influence the actual chance of a lightning strike."
Myth #3: Metal roofs are ugly
Metal roofs have traditionally been associated with industrial buildings or outbuildings like sheds and barns. But as metal roofing’s popularity has grown, so has the technology to make it an excellent choice for residential structures. Manufacturers have gone from standing seam metal roofs to creating metal shingles in a variety of colors that would make an attractive covering for any home. Some metal shingles are stamped and shaped to look like other types of roofing, like wood shake, stone slate and clay tile, such as the MetalWorks steel shingle produced by major roofing manufacturer TAMKO Building Products.
Myth #4: Metal roofs can’t handle hail
Metal roofs are actually among the most resilient roofing options when it comes to hail. Many metal shingles are rated Class 4 for Impact Resistance by the UL testing group. The Metal Roofing Alliance (MRA) reported that studies conducted by the Insurance Institute for Business & Home Safety (IBHS) acknowledged that all roof types can sustain some cosmetic damage depending on hailstorm severity, but "metal roofing performed best and was much less likely to puncture as compared to asphalt, withstanding even golf ball-sized hail stones without compromising performance."
Metal roofs also stand up well to other types of extreme weather. Metal shingles are often rated to withstand winds of over 100 miles per hour, and are rated for fire resistance.
Myth #5: Metal roofs aren’t energy efficient
Because metal in other uses is a good conductor of heat and cold, some homeowners are concerned a metal roof will cause their homes to be colder during winter and hotter in the summer. Besides the comfort factor, the increased utility costs associated with that misconception cause major concern. The reality is, according to the MRA, metal roofing boasts some of the best energy efficiency among roofing options. State Farm Insurance Company reported that metal roofs reflect solar radiant heat, which can reduce cooling costs by 10-15 percent.
"Unlike asphalt shingles, the secret to metal roofing’s energy efficiency is its highly-reflective surface, regardless of color," said Rick Taylor, a longtime roofing contractor now working as TAMKO’s field sales training manager. "This means, in our case, all of the MetalWorks colors are ENERGY STAR-certified and are rated by the Cool Roof Rating Council — even the darkest color options."
The Metal Roofing Alliance reports that metal roofs also provide excellent insulation in the winter, and estimates that choosing metal could save up to 40% in energy costs for a home during the year. The Metal Construction Association also said metal roofs are considered a product of choice for snowy areas because of their superior response and tolerance to that environment.