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Think of radiant barrier as shade for your home. As an example, when you walk underneath the shade of a tree during a hot, sunny day you feel cooler not because the air around you is cooler but because the sun is not hitting directly against your skin, transferring radiant heat into your body and making you feel hotter.

Radiant Barrier coating is a reflective layer applied to the underside of your roof deck that reflects 81% of radiant heat (electromagnetic waves produced by the sun) away from your roof, your attic, and ultimately your living space. Locations with extreme weather in the summer, homes with a strong Western exposure, older homes with insufficient insulation, and homes with dark roofing material will all greatly benefit from the application of a Radiant Barrier.

New Technology Energy recommends Heat Bloc-Ultra 81, an aluminum-colored, water-based, breathable, environmentally friendly, low emissivity (low-e) coating that is the highest rated Interior Radiation Control Coating according to the Reflective Insulation Manufacturers Association. Heat Bloc-Ultra 81 will enhance the performance of your existing insulation, reduce inconsistent temperatures between rooms, levels and different times of day, and reduce your air conditioning bill. It is the most affordable and practical solution for retrofit applications and will not trap moisture or cause problems with cell phone reception. According to surveys conducted by the American Institute of Architects, 90 percent of consumers will pay up to $5,000 for a more energy efficient home, meaning that an investment in radiant barrier could also mean an increase in the value of your home, making it more attractive to potential buyers. Read what the US department Energy says about it.