Radiant barriers are installed in 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.

How Radiant Barriers Work

Heat travels from a warm area to a cool area by a combination of conduction, convection, and radiation. Heat flows by conduction from a hotter material to a colder material when the two materials touch. Heat transfer by convection occurs when a liquid or gas is heated, becomes less dense, and rises. Radiant heat travels in a straight line away from the hot surface and heats anything solid as the wave of energy hits it.

When the sun heats a roof, it's primarily the sun's radiant energy that makes the roof hot. A large portion of this heat travels by conduction through the roofing materials to the attic side of the roof. The hot roof material then radiates its gained heat energy into the cooler attic (some of the roof's heat will radiate in other directions too). A radiant barrier reduces the radiant heat transfer from the roof to the attic space.

Reflects 97% of radiation heat Perforated aluminum foil radiant barrier to eliminating sweating; It is used in attics, roofs and walls ; Easily stapled into place in attic on ceiling joists or rafters, or perferably sealed with aluminum tape. Adhesion is good on clean and dry surfaces. There is no discoloration, it is offers excellent resistance to water, water vapor, oxidation and weathering.

What are the benefits of  Radiant Barrier?

• Prevents up to 97% of the radiant heat in the panel from radiating into the attic.
• Reduces attic temperatures by as much as 30°.
• Reduces energy consumption for cooling by about 20%.
• Increases comfort level of the home.
• May add resale value to the home.

Advantages

What are the benefits of radiant barriers in attics? The primary benefit of attic radiant barriers is in reducing air-conditioning cooling loads in warm or hot climates. When solar energy is absorbed by the roof, heat from the roof sheathing and framing radiates downward toward the attic floor, through the insulation and framing and into the living areas of the home. Radiant Barrier prevents up to 97% of attic radiant heat gain through the panel, keeping attic temperatures significantly cooler.