Choose from the following questions to learn more about ENERGY STAR certified roof products.
It is a reflective roof product that lowers roof surface temperature by up to 100°F, thereby decreasing the amount of heat transferred into a building's interior. ENERGY STAR certified roof products save money and energy by reducing the amount of air conditioning needed to keep a building comfortable.
Products bearing the ENERGY STAR labels are more energy efficient than standard products, thereby saving energy and money. In general, ENERGY STAR certified products including: appliances, HVAC equipment, office equipment, residential lighting, and even homes, reduce energy costs by at least 30 percent.
Roof products that meet or exceed solar reflectance, without compromising product quality and performance, qualify for the ENERGY STAR label. Manufacturers voluntarily sign an agreement with ENERGY STAR called a Partnership Agreement (PA) allowing them to place the ENERGY STAR label on the packaging of qualifying roof products. They can also use the label in product promotions and advertising for certified products.
ENERGY STAR roof specifications are not restricted to any particular type of roof product. However, ENERGY STAR expects that, at least initially, metal, single-ply membrane, and roof coating products will be most widely represented.
Ninety percent of the energy in the United States is generated by burning fossil fuels, which creates the air pollution associated with smog, acid rain, and global climate change. By reducing the amount of energy needed to cool buildings, ENERGY STAR certified roof products help to reduce the production of these air pollutants. Additionally, reflective roof products can help reduce the “heat island effect,”a phenomenon in which cities can be 2 to 8°F warmer than the surrounding countryside. Such heat islands occur, in large part, because many buildings and paved surfaces are designed with dark materials that absorb heat from the sun. This heat is released at night, causing the air temperature to remain high. The resulting elevated temperature leads to an increased demand for air conditioning in buildings, increased fuel use for vehicle air conditioning, increased levels of smog, and associated increased levels of heat-related and smog-related health problems. Installing reflective roofs helps reduce the heat island effect, decreasing the amount of smog in the air and benefiting the entire community.
Benefits of ENERGY STAR certified roof products include:
Energy savings from installing ENERGY STAR certified roof products will depend on the geographic location and climate where it is installed, existing insulation levels in the building, the type of roof it replaces, the type of roof installed, and how well it is kept clean and maintained. In general, cooling energy savings can be as high as 50 percent. Additionally, a reflective roof can reduce peak cooling demand by 10 to 15 percent. As a result, building owners may be able to purchase smaller, less expensive HVAC systems.
Homes and buildings located in hot and sunny climates will realize the greatest energy and cost savings. So, people living in southern geographic areas that use more air conditioning will see greater reductions in their energy bills than people living elsewhere in the country.
In general, building owners will save the most money on energy bills by installing an ENERGY STAR certified roof product if their building has the following characteristics: high air-conditioning bills, a large roof surface as compared to the building's overall size, lower levels of insulation, and/or a location in a hot, sunny climate. The most cost-effective time to install an ENERGY STAR certified roof product is when re-roofing, constructing new buildings, or maintaining a roof by applying a coating.
An energy-efficient home or building has both reflective roof surfaces and adequate insulation. But, you will notice greater savings on your cooling bills if you install ENERGY STAR certified roof products on a building with a lower level of roof insulation. However, when installing a reflective roof while constructing a new building, doing a major renovation, or replacing your whole roof system, you should consult with your contractor to maximize savings by making sure an optimum level of insulation is installed.
Due to normal wear and tear, some degradation of roof reflectivity can be expected, particularly within the first few years after installation. Flat roofs may accumulate more dirt and debris because their slope is not great enough to allow washing by rain. Following maintenance procedures minimizes degradation and maximizes energy savings. Consult your roofing contractor or product manufacturer to learn more about recommended maintenance procedures and schedules.
ENERGY STAR understands that the water tightness, durability, and longevity of a roof are the primary concerns of building and homeowners. These participating manufacturers must back their compliant roof products with warranties that are comparable to their other roof products.
The ENERGY STAR label will appear on roof product packaging and advertisements. If you are installing or replacing a roof on a commercial or residential building, be sure to ask your roofing contractor or manufacturer about ENERGY STAR. Find a list of ENERGY STAR certified roof product manufacturers.