Radiant barrier wraps reflect heat from the sun, and are typically installed over an attic's rafters. A recent study conducted by Appalachian State University showed that on average, a radiant ...

The easiest and most effective do-it-yourself method is to install radiant barrier foil under your roof rafters and add more attic ventilation. You can buy the reinforced foil for as little as 9 ...

A radiant barrier doesn't work the same way as the thermal insulation in your attic, which slows the entry of hot air into air-conditioned spaces downstairs.What is a radiant barrier? According to ...

Correctly installed, the foil surface of the radiant barrier sheathing can block up to 97 percent of the radiant heat in the roof panel from entering your attic.

The radiant barrier will block the radiant heat transfer between a surface that is giving off heat, such as a hot roof, and a surface that can absorb this heat, like conventional attic insulation.

However, research shows that claims of energy savings have often been dramatically overstated. In hot climates, an attic radiant barrier can save 8 to 12 percent of the annual cooling costs.

The best method to reduce this radiant heat is by installing an aluminum foil barrier under the roof rafters and increasing attic ventilation.

A: The most common application of a radiant barrier in a home will be on the underside of the roof decking to stop the radiation from transferring through into the attic, keeping the attic cooler ...

Jose Luis Contreras Hernandez of Energy Attic installs radiant barrier insulation in a McKinney attic. Experts say it can reduce summer cooling costs 2 percent to 10 percent.