How Cool Roof Works

To understand how roofs can keep cool in the sun you need to first understand solar energy.

How cool roof works.

Cool roofs can also enhance roof durability and reduce both building cooling loads and the urban heat island effect. 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. Standard or dark roofs can reach temperatures of 150 f or more in the summer sun. The coolness of a roof can be determined by comparing two factors.

Department of energy the surface of a cool roof reflects more sunlight and releases more heat than a so called hot or dark roof. A small fraction less than 10 arrives as invisible ultraviolet light. Solar reflectance and. 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 cool roof under the same conditions could stay more than 50 f cooler and save energy and money by using less air conditioning. Reflective coatings for instance are difficult to apply evenly. A professional will be able to determine the slope of your roof and what cool roofing system will work best.

Solar energy is composed of ultraviolet uv rays visible light and infrared energy. While the term cool roof is sometimes used to describe any roofing surface that is cooler than a standard rooftop green certification. Science of cool roofs how do cool roofs work. Cool roofing is an emergent and powerful technology used for temperature control of buildings and areas.