Energy-efficient roofing products can cut air-conditioning costs by lowering the surface temperature of the roof.
An energy-efficient roofing system keeps the heat out of your attic in summer, which helps your whole house stay cooler. Bonus: It can also lower your air-conditioning bills, especially if you live in a warm climate or don’t have tall trees to shade the roof.
The secret to a cool roof is twofold: reflect and ventilate.
Reflect the Sun’s Heat
You can save energy with your roof by using roofing materials that reflect the sun’s energy, rather than absorb it.
“Sears offers Owens Corning asphalt shingles in five light colors that meet ENERGY STAR requirements: Shasta White, Frosted Oak, Harbor Fog, Sage and Sunrise,” says Dave Lincon, a home improvement expert for Sears Home Services. “Choosing one of these colors for your new roof will reflect heat, so your house stays cooler in summer.”
Another way to reflect heat is to apply a radiant barrier to the underside of the roof decking. This reflective coating blocks heat from transferring through the roof to the attic, and that helps keep the whole house cooler in summer. “It’s one of the most cost-effective ways to get energy efficiency up top,” Lincoln says.
Even a reflective roof lets some heat into the attic. That’s where ventilation comes in.
“You need to let your attic breathe to help cool it down,” Lincon says. That means having enough vents in the soffit to let in cool air and the right number and types of vents in the roof to exhaust hot air. “When we install your roof, if you didn’t have adequate ventilation already, you will when we get done with it,” assures Lincon.