How To Cool Roof

Used in countries with hot dry climates for centuries the windcatcher has an onion shaped dome with nearly vertical vanes that will turn in even slight breezes the vanes force cooler air down a shaft into the house.

How to cool roof.

A cool roof transfers less heat to the building below so the building stays cooler and uses less energy for air conditioning. Reduced air pollution and greenhouse gas emissions. Install windcatchers in the roofing to direct cool air downward. Improved human health and comfort.

A cool roof under the same conditions could stay more than 50 f cooler and save energy and money by using less air conditioning. A cool roof is a roofing system that delivers higher solar reflectance the ability to reflect the visible infrared and ultraviolet wavelengths of the sun reducing heat transfer to the building and higher thermal emittance the ability to radiate absorbed or non reflected solar energy than standard designed roofing products. The cool roof rating council was created in 1998 to develop accurate and credible methods for evaluating and labeling the solar reflectance and thermal emittance radiative properties of roofing products and to disseminate the information to all interested parties. Department of energy the surface of a cool roof reflects more sunlight and releases more heat than a so called hot or dark roof.

Standard or dark roofs can reach temperatures of 150 f or more in the summer sun. Cool roof rating council crrc has created a rating system for measuring and reporting the solar reflectance and thermal emittance of roofing products. A cool roof is one that strongly reflects sunlight and also cools itself by efficiently emitting radiation to its surroundings. Flat roofing is more prone to trapping heat than other roofing systems and this causes your building to be warmer and your energy costs higher.

Cool roof rating council. The cool roof rating council accepts test reports from approved testing laboratories and then compiles the information in an easily accessed database. Cool roofing information for home and building owners. Manufacturers however have developed a number of solutions you can use to keep your flat roof cool all year round.

Cool roofs can be made of a highly reflective type of paint a sheet covering or highly reflective tiles or shingles. While the term cool roof is sometimes used to describe any roofing surface that is cooler than a standard rooftop green certification. Historically cool roofs have been either white. The cool roof rating council is a not for profit organization that validates the reflective and emissive properties of cool roof products.

Cool roofs can reduce air temperatures inside. What is a cool roof. By lowering energy use cool roofs decrease the production of associated air pollution and greenhouse gas emissions.