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Radiant Barriers


Radiant barriers are installed in buildings and homes—most commonly in attics—to reduce summer heat gain and winter heat loss, which helps lower heating and cooling costs. The barriers consist of a highly reflective material that reflects radiant heat rather than absorbing it. They don't, however, reduce heat conduction like thermal insulation materials.

How Radiant Barriers Work

All radiant barriers must have a low emissivity and high reflectivity.  Radiant barriers are more effective in hot climates than in cool climates, especially when cooling air ducts are located in the attic.

Types of Radiant Barriers

Radiant barriers come in a variety of forms, including reflective foil, reflective metal roof shingles, reflective laminated roof sheathing, and even reflective chips, which can be applied over loose-fill insulation.


A radiant barrier's effectiveness depends on proper installation. Therefore, it's best to have a certified installer do it.