Cool Roofs - Department of Energy
Cool Roofs. A cool roof is designed to reflect more sunlight than a conventional roof, absorbing less solar energy. This lowers the temperature of the building just as wearing light-colored clothing keeps you cool on a sunny day. Conventional roofs can reach temperatures of 150°F or more on a sunny summer afternoon, sun.
What are COOL Roofing Shingles and Solar Reflectance Index (SRI)?
Discover the energy-efficient benefits of installing solar reflecting, asphalt roofing shingles, also known as COOL shingles, that meet COOL roof requirements and how they can potentially help you save money on energy costs.
Cool Roofs - ENERGY STAR
There are two ways to help cool a roof. First, a cool roof can reflect away sunlight, so it stays cooler. Such a roof is said to have a high solar reflectance. Second, a cool roof should also release or emit heat (infrared radiation) so it stays cool.
Using Cool Roofs to Reduce Heat Islands | US EPA
2024年3月26日 — Reduced energy use: A cool roof lowers the amount of heat transferred to the building, which allows it to stay cooler and use less energy for air conditioning. In air-conditioned residential buildings, solar reflectance from a cool roof …
Cool roofs help lower indoor air temperatures by reflecting sunlight and decreasing heat absorption. Did you know? • Solar reflective roofs, solar reflective pavements, and vegetation could lower urban air temperatures, saving additional energy and improving air quality.
A cool roof may increase the need for heating energy in winter by reflecting sunlight that would otherwise warm the building. However, winter penalties can be smaller than summer savings even in mixed climates (locations with comparable heating and cooling requirements).
For example, a surface that reflects 55% of sunlight has a solar reflectance of 0.55. Most dark roof materials reflect 5 to 20% of incoming sunlight, while light-colored roof materials typically reflect 55 to 90%. Solar reflectance has the biggest effect on keeping your roof cool in the sun.
Top 7 Benefits of Cool Roofing Systems - Rescue My Roof
2024年7月5日 — Cool roofing systems are designed to reflect more sunlight and absorb less heat than standard roofing materials. They typically have a high solar reflectance and thermal emittance, which helps to lower the temperature of the roof surface and, consequently, the building beneath it.
What is a Cool Roof? - Cool Roof Rating Council
A cool roof is one that strongly reflects sunlight (solar energy) and also cools itself by efficiently emitting any heat that was absorbed. The roof literally stays cooler and reduces the amount of heat conducted into the building below.
Energy efficient roofs are also known as cool roofs. These roofs are designed to reflect more sunlight and absorb less heat than a standard roof. Energy efficient roofing products have high solar reflectance and thermal emittance properties. These properties help lower roof and attic temperatures on hot, sunny days to