Radiant Barrier Roof Material

Radiant barriers are utilized to reduce summer heat gain in attics and help to improve the efficiency of green building envelopes.

Radiant barrier roof material.

In essence the foil barrier reduces convection into the attic from roofing materials that are heated by the sun. A technology on the flipside of an overlay is a roof underpinning or sub roof system called a radiant barrier. A radiant barrier reduces the radiant heat transfer from the underside of the roof to the other surfaces in the attic. A radiant barrier is a type of building material that reflects thermal radiation and reduces heat transfer because thermal energy is also transferred by conduction and convection in addition radiation radiant barriers are often supplemented with thermal insulation that slows down heat transfer by conduction or convection.

Florida solar energy center conducted a study on radiant barrier and shingle temperatures and found that the roof increased in temperature by only about 5 degrees at the hottest point of the. Reflectix insulation has over 20 energy saving applications for reflectix insulation has over 20 energy saving applications for around the home. This under the roof application involves installing a reflective material such as aluminum or even a specialized reflective spray treatment that s installed into an attic or space between a home s interior and the roof. Radiant barrier installation attic radiant barrier installation most of the heat entering a home comes through the roof.

Also the greater the temperature difference between the sides of the radiant barrier material the greater the benefits a radiant barrier. A radiant barrier works best when it is perpendicular to the radiant energy striking it. As the original 1 brand of radiant barrier sheathing lp techshield panels vaporvents technology prevents moisture buildup during and after construction while blocking up to 97 of radiant heat in roof panels. We take a look at how radiant barriers work the different types of radiant barriers and some of the.

The radiant barrier reflects 95 of the radiant heat back to the roofing materials which then emits over 90 of the heat out the roof almost instantly. Installed in over 1 5 million homes in the united states lp techshield panels also lower attic temperatures up to 30 f. If the radiant barrier was not there the sun would heat the roofing materials and the heat transfer would occur into the air of the attic. A radiant barrier can be effective with an asphalt shingle roof only when installed inside the attic either to the underside of the roof decking or to the underside of the roof rafters.

A radiant barrier can lower heat transfer from attics to the building below keep the attic space cooler and lower cooling costs by up to 17 in warmer climates. In these attic space applications there is an air space below the radiant barrier. The list of uses includes crawl space radiant floor attic and walls.