Technologies To Protect Your Home Against Extreme Weather
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Technologies To Protect Your Home Against Extreme Weather

With storms, floods and wildfires a mounting concern for many homeowners, building experts look ahead at ways to prepare.

By SCOTT CALVERT, Kevin Hand
Wed, Apr 13, 2022 10:52amGrey Clock 5 min

Threats from hurricanes, wildfires and tornadoes are a growing concern for many homeowners looking for ways to protect their properties—especially as some scientists report that extreme weather events will likely continue to have far-reaching consequences in coming years.

New technologies are emerging. Companies are developing innovative roof systems such as one made by Tesla Inc. that aim to handle high winds and punishing hail. For new homes, novel uses of concrete, including a method that squeezes it out in layers like toothpaste, offer sturdy alternatives to wood-frame construction. “The Romans had concrete, but the way we’re using it by doing 3D printing is new,” says architect Rose Grant.

Homeowners contemplating some of the more cutting-edge approaches to shoring up their homes could be looking at hefty price tags—meaning they will need to weigh potential benefits against costs. And because most American homes are older than 10 years, retrofits will be key, industry experts say.

In the face of weather and climate threats in coming decades, the best advice remains avoiding coasts, floodplains or forests as home sites, says Nicholas Rajkovich, a University at Buffalo associate professor of architecture.

But for those looking to fortify their homes, here are coming options and the latest expert advice:

Roofs Go High-Tech

Solar roof systems are among the newest offerings for homeowners, billed as offering sturdy protection while also generating power. These non-traditional roofs combine sleek aesthetics and environmental sustainability with disaster resilience, building experts say.

Tesla Inc. is among the companies making a solar roof system that features strong glass tiles embedded with solar cells. Tesla says its roof, constructed with a combination of glass solar tiles, glass roofing tiles and architectural-grade steel tiles, has the top fire rating, second-highest hail rating and can withstand 110-mph winds. Costs vary by roof size, a Tesla representative says. Ivan Gould, a real estate agent in Sarasota, Fla., says the Tesla roof on his 2,400-square-foot home cost $41,500 after a tax credit.

GAF Energy, part of privately held Standard Industries, this year launched a roof system that it says directly integrates solar technology into traditional roofing processes and materials. The company says the system uses the world’s first nailable solar shingle and has the same fire and wind ratings as Tesla’s roof.

Seal the Roof Deck

As too often seen in recent disasters, severe weather can take off a roof’s shingles, allowing rain to pour through gaps in the underlying roof deck and destroy the home’s interior. An unsealed roof deck allows up to 60% of falling rain to enter the attic, the Insurance Institute for Business and Home Safety says.

Here, a tried-and-true fix can make a big difference. Sealing the roof deck is relatively easy, and can reduce water entry by as much as 95%, the insurance institute says. One method is to cover seams with flashing tape, then top the deck with a reinforced synthetic material. The roof deck of a 2,000-square-foot home could be sealed for as little as $500, the institute says.

3D-Printed Walls

Most houses are “stick built” with wood frames, yet some builders are shifting to concrete to build stronger walls. Austin-based Icon Technology Inc. says it has used 3D printing to build more than two dozen homes and other structures. A 46.5-foot-wide gantry-style printer dispenses a concrete mix, layer by layer, to form walls at a home site. The computer-driven process can save time and money, and yield a structure whose exterior won’t burn or rot and that can withstand extreme weather better than conventional wood-frame homes, says Bungane Mehlomakulu, Icon’s head of building performance. Compared with other types of construction, 3D printing can more easily create curved walls that allow high winds to flow past, he says.

Iowa-based Alquist 3D, which focuses on affordable housing, says it plans to print hundreds of homes over the next three years. Black Buffalo 3D Corp., which supplies Alquist’s material and printers, says its proprietary concrete mixture cures to a compressive strength of 7,500 pounds per square inch, well above the global wall-strength standards range of 2,500 to 4,000 PSI.

Ignition-Free Zones

Increasingly intense and destructive wildfires have focused attention on efforts needed to mitigate risks for homeowners—and is bolstering a growing idea that joint neighborhood efforts can be more effective than those of individuals. Embers and small flames cause a majority of homes to ignite during wildfires, the nonprofit National Fire Protection Association says. Many of the prescriptions remain basic: To lower risks, homeowners in fire-prone areas should clear potential fuels—anything that can burn—up to 200 feet from the house, the group says. The most critical zone is the 5-foot perimeter around the home.

Remove dead leaves from roofs and gutters. Enclose areas under decks with wire mesh to keep out debris. Move anything that might catch fire, including plants, away from exterior walls. Tree placement is also key, the association says. Branches and leaves should be at least 10 feet away from the house, and there should be more space between trees closest to the dwelling.

Protect the Entry Points

Windows are vulnerable in a wildfire, and heat from burning trees can shatter the glass before a home ignites. Double-paned windows, with one pane of tempered glass, can reduce the risk, according to Home Innovation Research Labs, an independent subsidiary of the National Association of Home Builders. Finding ways to make windows more resistant to heat and flame is a major focus of research in the homebuilding industry that is expected to bring new products in coming years.

Embers and flames that enter through a vent can ignite a house from within, so it is important to seal off potential entry points, usually found on the roof, around crawl spaces and on the undersides of eaves. Covering vents with ⅛-inch metal mesh screen can block embers big enough to start a fire, the Insurance Institute for Business and Home Safety says.

Insulate With Concrete

With roots in post-World War II Switzerland, a method known as “insulating concrete forms” is winning plaudits from safety experts for its strength and gaining a higher profile as efforts ramp up to find ways to fend off severe weather. Canada-based Nudura Inc., says structures built with its ICFs can resist winds up to 250 mph, equivalent to an F4 tornado.

Several companies make these forms, which can be stacked along exterior walls like Lego blocks. The forms consist of two layers of insulation material separated by a void several inches wide. Concrete is poured into that gap, creating a concrete-filled sandwich.

Mike Russell, a Nudura technical sales representative, says his 2,500-square-foot ICF house near St. Augustine, Fla., emerged unscathed from Hurricane Michael in 2016 and a tornado in 2017. While the house cost 5% more to build than a traditional home, he says, the insulating effects keep his electric bill around $40 to $50 a month, even in summer.

Let the Water In

In a counterintuitive idea, building experts say allowing part of your house to flood could help you protect it. Using a technique known as “wet floodproofing,” small rectangular openings can be added to foundation and garage walls, below the expected flood level. If flood waters allowed to enter a home’s enclosed area can quickly reach the same level as flood waters outside, the destructive effects of hydrostatic pressure are reduced, according to the Federal Emergency Management Agency. This can help limit damage to the foundation and other parts of the house.

“You just allow your basement to flood, so that you can clean it up later,” said Nicholas Rajkovich, a University at Buffalo associate professor of architecture. This, of course, would require putting the furnace, hot water tank and other appliances at higher levels. And, to be sure, it’s best for basements, garages and other areas not used as living space.

Beware the Garage

The garage door is typically the largest opening in a home’s building envelope, and if it breaks open during a hurricane or tornado, the rapid buildup of air pressure inside can “literally rip the roof off the house,” says John Peavey, who directs the building-science division at Home Innovation Research Labs. He recommends a reinforced garage door, which some local codes require. Impact-resistant windows and skylights will also help prevent blowouts, as do hurricane shutters.

Extra protection against wind can add 20%-30% to a garage door’s cost, according to Mischa Fisher, chief economist at Angi, formerly Angie’s List.

Reprinted by permission of The Wall Street Journal, Copyright 2021 Dow Jones & Company. Inc. All Rights Reserved Worldwide. Original date of publication: April 12, 2022.



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Ray White’s chief economist outlines her predictions for housing market trends in 2024

By Bronwyn Allen
Tue, Nov 28, 2023 2 min

Ray White’s chief economist, Nerida Conisbee says property price growth will continue next year and mortgage holders will need to “survive until 2025” amid expectations of higher interest rates for longer.

Ms Conisbee said strong population growth and a housing supply shortage combatted the impact of rising interest rates in 2023, leading to unusually strong price growth during a rate hiking cycle. The latest CoreLogic data shows home values have increased by more than 10 percent in the year to date in Sydney, Brisbane and Perth. Among the regional markets, price growth has been strongest in regional South Australia with 8.6 percent growth and regional Queensland at 6.9 percent growth.

“As interest rates head close to peak, it is expected that price growth will continue. At this point, housing supply remains extremely low and many people that would be new home buyers are being pushed into the established market,” Ms Conisbee said. “Big jumps in rents are pushing more first home buyers into the market and population growth is continuing to be strong.”

Ms Conisbee said interest rates will be higher for longer due to sticky inflation. “… we are unlikely to see a rate cut until late 2024 or early 2025. This means mortgage holders need to survive until 2025, paying far more on their home loans than they did two years ago.”

Buyers in coastal areas currently have a window of opportunity to take advantage of softer prices, Ms Conisbee said. “Look out for beach house bargains over summer but you need to move quick. In many beachside holiday destinations, we saw a sharp rise in properties for sale and a corresponding fall in prices. This was driven by many pandemic driven holiday home purchases coming back on to the market.”

3 key housing market trends for 2024

Here are three of Ms Conisbee’s predictions for the key housing market trends of 2024.

Luxury apartment market to soar

Ms Conisbee said the types of apartments being built have changed dramatically amid more people choosing to live in apartments longer-term and Australia’s ageing population downsizing. “Demand is increasing for much larger, higher quality, more expensive developments. This has resulted in the most expensive apartments in Australia seeing price increases more than double those of an average priced apartment. This year, fewer apartments being built, growing population and a desire to live in some of Australia’s most sought-after inner urban areas will lead to a boom in luxury apartment demand.”

Homes to become even greener

The rising costs of energy and the health impacts of heat are two new factors driving interest in green homes, Ms Conisbee said. “Having a greener home utilising solar and batteries makes it cheaper to run air conditioning, heaters and pool pumps. We are heading into a particularly hot summer and having homes that are difficult to cool down makes them far more dangerous for the elderly and very young.”

More people living alone

For some time now, long-term social changes such as delayed marriage and an ageing population have led to more people living alone. However, Ms Conisbee points out that the pandemic also showed that many people prefer to live alone for lifestyle reasons. “Shorter term, the pandemic has shown that given the chance, many people prefer to live alone with a record increase in single-person households during the time. This trend may influence housing preferences, with a potential rise in demand for smaller dwellings and properties catering to individuals rather than traditional family units.”

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