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With the current tidal wave of environmentally-friendly products hitting the market, figuring out which are actually worth the money can be like finding a needle in a haystack. But of all these energy saving products, eShield™ multi-layer foil insulation truly rises above the rest.

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Radiant Barriers: What You Need to Know

Gable view of an attic where radiant barriers are being installed

Proper insulation is necessary if you are to prevent too much heat gain or heat loss from occurring in your home. A well-insulated home is one step closer to becoming truly energy efficient because it allows property owners to conserve energy and cut back on their electricity and fuel bills.

Heat transfer in homes basically occurs in three different ways: conductive, convective, and radiant. Conduction happens when heat flows directly through the materials of the building envelope, while convection occurs when heat is transferred through the movement of the air inside the home. Radiation, on the other hand can travel through space, like when the warmth of the sunshine heats up the roof and radiates the heat energy onto the attic surfaces.

Traditional insulation does a great job at resisting heat transfer through conduction and, to some extent, convection. The third type of heat transfer, however, is best dealt with by a radiant barrier.

What exactly is a radiant barrier?

Radiant barriers are a part of reflective insulations systems, which help block out the sun’s radiant energy to prevent radiant heat gain in homes and office buildings.

The reflective surfaces of radiant barriers are made to face an air space and are installed inside the building envelope. Homeowners should know that when radiant barriers collect dust, their reflective property is diminished.

How do radiant barriers reduce heat in homes?

The sun’s radiant energy is one of the foremost causes of heating in roofs. A lot of this heat actually flows by conduction through the roof, to its underside. This heat is then radiated onto attic surfaces, heating up the attic floors as well as the ductwork.

Instead of absorbing radiant energy, a roof in which radiant barriers are installed will reflect it instead, reducing the heat transfer that occurs from the underside of the roof to the other parts of your home.

The U.S. Department of Energy notes that radiant barriers work best if they are perpendicular to the radiant energy that is hitting them. Furthermore, their benefits are maximized when the temperature difference between the sides of the barrier is greater. Radiant barriers also appear to offer more energy-saving benefits to homes located in warmer climates, wherein they reduce cooling bills by as much as 10 percent.

To learn more about the benefits of radiant barriers, please call the eShield™ team at 866-978-9170 or send us a message through our contact page. We are committed to helping you increase the energy efficiency of your home with our complete range of attic insulation products and services.