How Cool Roof Works

Department of energy the surface of a cool roof reflects more sunlight and releases more heat than a so called hot or dark roof.

How cool roof works.

Standard or dark roofs can reach temperatures of 150 f or more in the summer sun. Reflective coatings for instance are difficult to apply evenly. To understand how roofs can keep cool in the sun you need to first understand solar energy. Science of cool roofs how do cool roofs work.

A cool roof under the same conditions could stay more than 50 f cooler and save energy and money by using less air conditioning. Cool roofing is an emergent and powerful technology used for temperature control of buildings and areas. A cool roof prevents heat absorption by reflecting the sun s heat and then emitting its radiation back into the atmosphere. Slightly less than half of sunlight is visible.

A cool roof is a roof designed to maintain a lower surface temperature in bright sunshine than a traditional roof source. A professional will be able to determine the slope of your roof and what cool roofing system will work best. How it works most of the roofs in the world including over 90 of the roofs in the united states are dark colored. The coolness of a roof can be determined by comparing two factors.

Some single ply membranes may be installed on high sloped roofs but the most effective solutions for high sloped roofs are cool roof shingles and tiles. Cool roofs can be made of a highly reflective type of paint a sheet covering or highly reflective tiles or shingles. Solar reflectance and. While the term cool roof is sometimes used to describe any roofing surface that is cooler than a standard rooftop green certification.