Reflect on this cool home insulation feature
Radiant barriers work by reflecting radiant heat away from your home using aluminum or reflective materials installed beneath roof panels facing an open airspace.
Expect to pay $700 to $2,800 for radiant barrier installation, with average costs around $1,700 depending on your attic size and barrier type.
Your radiant barrier becomes less effective when dust accumulates, so installing it aluminum-side down or choosing double-faced options helps maintain long-term performance.
Hiring a local attic insulation professional ensures proper installation with correct airspace gaps and angle placement, keeping your cooling system efficient for decades.
If you’re deep into researching insulation types for attics or elsewhere, odds are you’ve come across radiant barriers. While a radiant barrier isn’t enough to insulate your home all on its own, it can offer some extra protection from hot days. That’s why radiant barriers are so popular in particularly hot climates, like the southern United States.
But how does a radiant barrier work, and is it right for your abode? Understanding the mechanism behind these energy-saving solutions will help you make an informed choice.
A radiant barrier is an additional insulation measure, often paired with another, more intensive solution, that limits how much heat is absorbed into your home. It’s available in two types—foil and spray-on—both of which work to keep your domain cool despite high exterior temperatures. While it can be a good choice for those across the country, residents of especially hot climates will experience the biggest benefits.
Anyone who’s ever stood in the sun on a hot summer day knows just how quickly things can heat up, and that rule applies to houses, too. Radiant heat, or a type of heat that travels in a straight line and is absorbed by solid entities, is the reason for this. Without any protective measures in place, it will continuously be absorbed into a home the longer it goes unmitigated.
Radiant barriers offer some relief from this phenomenon because they’re composed of reflective materials, applied on top of traditional insulation, and installed just underneath roof panels in order to redirect sunlight and its punishing heat.
There are a few problems with radiant barriers to keep in mind—namely, that they become less effective when dusty and won’t work at all if they aren’t installed properly. If they aren’t placed facing an open airspace, you might as well forget about installing them in the first place.
Fortunately, there are ways to minimize dust build-up, like installing radiant barriers aluminum-side down (though you can always opt for a double-faced option for extra protection). Radiant barrier installation is fairly straightforward, especially if you hire an attic insulation pro near you.
According to Angi data, 11% of homeowners who install blown-in insulation also opt to install energy-saving radiant barrier protection. Other common add-on services include removing old insulation, installing sound proofing, and insulating hot water pipes.
Radiant barriers are a worthwhile purchase for those living in places where the sun shines year-round because of their cooling properties. Experts estimate they can reduce cooling loads by anywhere from 6% to 16% during hot seasons.
However, if your local climate experiences a lot of cold and snow, spending extra on radiant barriers is unlikely to recoup the same amount in energy costs. Plus, there are still ways to regulate heat absorption that may make more sense depending on where you live—like installing additional thermal regulation, which will also be effective when it is cold.
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