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.

A cool roof prevents heat absorption by reflecting the sun s heat and then emitting its radiation back into the atmosphere. The coolness of a roof can be determined by comparing two factors. While the term cool roof is sometimes used to describe any roofing surface that is cooler than a standard rooftop green certification. Reflective coatings for instance are difficult to apply evenly.

Cool roofs can be made of a highly reflective type of paint a sheet covering or highly reflective tiles or shingles. A small fraction less than 10 arrives as invisible ultraviolet light. Cool roofing is an emergent and powerful technology used for temperature control of buildings and areas. Solar energy is composed of ultraviolet uv rays visible light and infrared energy.

Slightly less than half of sunlight is visible. Cool roofs can also enhance roof durability and reduce both building cooling loads and the urban heat island effect. Standard or dark roofs can reach temperatures of 150 f or more in the summer sun. 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.

How it works most of the roofs in the world including over 90 of the roofs in the united states are dark colored. 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. A professional will be able to determine the slope of your roof and what cool roofing system will work best.