Publish Date: 1/23/2017
An energy efficient roof can lower the overall roof temperature on your home by as much as 50 degrees. This lower temperature translates directly to lower cooling and energy bills, as well create less of a carbon footprint for your home. There are a few different qualities that make roofs energy efficient, read the article below to learn more.
The energy efficiency of a roof is measured by the Solar Reflective Index, or SRI. The SRI measures how much light from the sun is reflected, versus how much is absorbed. A roofing material with a high SRI will reflect more light, and be more energy efficient than a roof with a low SRI. The color of the roof can affect this to some extent. Just as dark colored clothing absorbs more heat than light colored clothing, dark colored roofing materials can absorb more heat than light colored materials. However, technology has advanced to create different colored roofing materials with highly reflective properties so that you can get an energy efficient roof in a variety of colors.
Thermal emittance measures how much heat is given off by the roof. When a thermal emittance is high, it means that instead of absorbing heat from the sun, it is released. Any heat that would be retained has been radiated, creating a cooler surface. This combines with the reflective properties of a roofing material to create the overall SRI Index rating.
Energy Efficient, or "cool roofs", come in a variety of materials. The SRI Index rating is the best indicator to know how effective the material is. The higher the SRI Index number, the more efficient the roof is. Traditional roofing materials become energy efficient in a few different ways. Special asphalt shingles become energy efficient when they're coated in solar-reflective granules. These shingles are appropriate for a wide variety of home and roof styles. Cool roofs can also be made from tile or metal. In both cases, like the asphalt shingles, the materials are coated with specific paints, coatings or granules to make them reflect more sunlight and absorb less heat.
An energy efficient roof has excellent long term benefits. Once your roof is installed, you can expect to see your energy bill decrease significantly. Your need for air conditioning will drop, as less heat is retained in your house. The overall roof temperature will decrease, which can extend the longevity of your roof. Overall home electricity demand will fall, which can prevent power outages and irregularities. Your new roof will be more energy efficient, it will work to keep your house "green" and contribute less to overall pollution by reducing power plant emissions. Places in your home that aren't typically air conditioned (your garage, attic or porch) will have a lower temperature than they would without energy efficient roofing.
AKW Roofing can install an energy efficient roof on a variety of building types. Residential homes, multi-family homes and commercial buildings are all great candidates for energy efficient roofing. Give us a call today at (918) 270-4992 to learn more about what energy efficient roofing option is right for you.
AKW Construction & Roofing, LLC
8902 E 11th Street, Tulsa Oklahoma 74112
Office: (918) 270-4992
Fax: (918) 270-4993
OK Roofing Contractor Registration #80000021