RENO, Nev. — Martin Diky said he panicked as a large wildfire started racing down a slope toward his wooden house near home with an aluminum protective covering. The material that can withstand intense heat for short periods resembles tin foil from the kitchen drawer. It is modeled after the tent-like shelters that wildland firefighters use as a last resort to protect themselves when trapped by flames.. The contractor had enough time to research quickly and decided to wrap his mountain
Diky, who lives mostly in theBay Area, bought $6,000 worth of wrapping from Firezat Inc. in San Diego, enough to cover his 1,400-square-foot (130-square-meter) second community of Meyers. “It’s pretty expensive, and you’d feel stupid if they stopped the fire before it got close,” he said. “But I’m really glad we did it. It was pretty nerve-wracking when the flames came down the slope.”
The flexible aluminum sheets that Diky affixed to his $700,000are not widely used because they are pricey and difficult to install. However, they have saved some properties, including historic cabins managed by the U.S. government. , fire crews even wrapped the base of the world’s giant tree to protect it from wildfires burning near a famous grove of gigantic old-growth sequoias in California’s Sequoia National Park. The colossal , some of the other sequoias in the Giant Forest, a museum, and some other buildings also were wrapped amid the possibility of intense flames.
It comes after another aluminum-wrapped homesurvived the Caldor Fire, about 20 miles (32 kilometers) west of Diky’s home while neighboring houses were destroyed. The wrapping deflects heat away from buildings, helping prevent flammable materials from combusting. It also keeps airborne embers — a significant contributor to spreading wildfires — from slipping through vents and other openings in a home. With a fiberglass backing and acrylic adhesive, the wraps can withstand heat up to 1,022 degrees Fahrenheit (550 Celsius).
About a decade ago, most wildfire damages were blamed on homesas flames burned nearby vegetation. suggest a more significant role is structure-to-structure fires that spread in a domino effect because of the tremendous heat that causes manufactured materials to burst into flames. The company where Diky bought his wraps gets about 95% of its sales from the U.S. Forest Service and Service. Firezat Inc. founding president Dan Hirning estimates the Forest Service has wrapped 600 to 700 buildings, bridges, communication towers, and other structures in national forests this year .
Firefighters on say they have used the wraps throughout the American West for several years to protect sensitive structures. At , they have wrapped the Angora Ridge Lookout, a nationally registered historic fire lookout tower, said Phil Heitzke, an agency battalion chief. “Many times, Forest Service structures are wrapped well before ibeforethe fire,” he said in a statement. Crews often can then focus on protecting other .liken the wraps to a “big baked potato.” One who helped install some said he felt like he was “wrapping Christmas presents.” Forest Service officials
Firezat sells fire shield rolls that are 5 feet (1.5 meters) wide by 200 feet (61 meters) long for about $700 each. Installation by a contractor typically costs thousands of dollars. “People think we should be selling tons of these things, but it’s not as much as everybody thinks,” HirningHeost, said. A saying they “demonstrated both remarkable performance and technical limitations.”burn unless “fire falls right on it.” A mechanical engineering professor at Ohio’s Case Western Reserve University published ten years of research about protective wraps in the Frontiers in Mechanical Engineering journal in 2019,
The aluminized surface blocked up to 92% of convective heat and up to 96% of radiation, Fumiaki Takahashi said. He said the wrapping is most effective if apast with exposure of fewer than 10 minutes. It’s less effective in areas with high-density housing, where spreading infernos can burn for hours without firefighters stopping them. The wraps “show promise in being effective, but further research is against severe fires, Takahashi said in an email. He said he wouldn’t recommend them to everyone because they proper installation.
“But once the installation methods are established (like a standard), I would,” he wrote. “There have been multiple success stories for saving historic cabins by the U.S. Forest Service.” Hirning said most of the individual buyers he’s had over the years are looking to protect “really expensive cabins, really expensive homes, resorts, etc.” They include homeowners on $5 million lots in Malibu, California, who are asked to sign an agreement that the Forest Service isn’t responsible for insurance adjuster who would reduce his rates if he wrapped a cabin worth about $1.5 million.. A Wyoming rancher once put Hirning on a conference call with a fire commander and
“Often it’s people who can’t get fire insurance or their insurance has been dropped. They want to wrap it to protect their investments that way,” he said. Diky suggests getting extra help putting up the wrapping. “They recommended three people could do it in 3.5 hours. I brought four contractors with me andinto the night … busted our butt for 12.5 hours,” he said. Regarding sales taking off due to recent wildfires, Hirning emphasized that it’s “an extremely seasonable business.” “The first five years, new competitors were coming on each year. And at the , I got a phone call: “Would you be interested in buying our inventory?'” he said. Once it starts raining and snowing, he says he often doesn’t sell anything for nine . That could change, however, as contributes to more intense weather and more destructive, nearly year-round wildfire seasons.