How Radiant Barriers Work

EnergyAttic Radiant Barrier reduces heating and cooling costs, makes homes and buildings more energy efficient, and provides much more comfortable and consistent temperatures by keeping heat within the home in the winter and keeping heat out during the summer. You will be able to keep your home at more consistent temperatures without the extreme hot and cold fluctuations and pockets of air in many of your rooms.

How does this work? You must remember that Heat goes to Cold only. That is just pure science. Therefore the way Energy Attic installs the radiant barrier it is effective in winter and summer. In the winter, this durable, double-sided aluminum product reflects the radiant heat back to the heated living areas of the home or building. It works similar to wrapping a baked potato in aluminum foil to retain heat and keep it warm longer. In the summer, a radiant barrier reflects heat to help prevent attic insulation from getting hot and transferring that heat into your home. If the radiant barrier is installed by stapling it to the roof rafters, then it also prevents the air conditioner and ductwork from absorbing the attic heat and transferring it into the home. Because it is installed on the rafters the moisture in the attic easily flows out resulting in NO moisture or condensation issues.

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Radiant Barriers are unlike mass insulation, which will only slow down or resist heat transfer. EnergyAttic Radiant Barrier actually reflects the heat away from your attic. Heat always goes into cold spaces by natural law. The problem is how to keep the heat in during the winter and how to keep it out in the summer.

There are three ways in which heat goes from warm spaces to cold spaces:

CONDUCTION – direct contact heat flow though a solid object such as a wall or ceiling. An example of conduction is touching a pot on the stove. This is conductive heat transfer.

CONVECTION – heat movement through air, occurring when air is warmed. The warm air expands, becoming less dense and rising. This is through steam or moisture. An example would be putting your hand above a boiling pot where you would feel heat in the form of steam.

RADIATION – electromagnetic, the movement of heat rays across air spaces from one warm object to a cooler object. The heat we feel from a wood stove or a space heater is radiant heat. Also feeling the sun’s rays on your face is radiant heat transfer.  All objects above absolute zero (-459.7 degrees F) emit infrared rays in a straight line in all directions.

The most common form of heat transfer is from radiant heat. All objects and bodies give off radiant heat. Even the traditional insulation in your attic gives off radiant heat to the cold attic spaces in the winter and to the living spaces in the summer. Regular insulation won’t stop radiant heat loss or heat gain. Radiant heat must be REFLECTED with a radiant barrier.

Down Heat Flow - Summer Heat Gain graph Up Heat Flow - Heat Loss Through Ceiling/Roof graph Side Heat Flow - Heat Loss Through Walls graph

yellow legend - Conductive Conductive: Direct contact. If you touch a pot on the stove, this is conductive heat transfer.

blue legend - Convective Convective: Steam, moisture. If you put your hand above a boiling pot, you will feel heat in the form of steam. This is convective heat transfer.

red legend - Radiant Radiant: Electromagnetic. Step outside on a sunny day and feel the sun’s rays on your face. You are feeling radiant heat transfer. All objects above absolute zero (-459.7 degrees F.) emit infrared rays in a straight line in all directions.

During the winter, 50-75% of the heat loss is through the ceiling/roofing system and 65-80% of heat loss through the walls is radiant heat. During the summer, 93% of the heat gain is radiant.

A double-sided 99% aluminum barrier allows you to eliminate 97% of the heat loss and gain wherever it is installed reflects the electromagnetic rays of radiant heat. It can be installed on the roof, as a home wrap, or between your first and second floors in earlier stages of construction.

How It Works: Radiant Barrier Insulation Dallas-Fort Worth, TX

Explanation of how Energy Attic’s aluminum foil radiant barrier insulation works in Dallas-Fort Worth homes and office buildings to make them more energy efficient, save money, reduce carbon footprint.

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