Reflective Cool Roof Materials

Aluminum roof coatings.

Reflective cool roof materials.

Pigmented coatings are less efficient than white coatings. The owens corning cool roof collection helps keep your roof cooler for a more comfortable home. High albedo products such as bright white paint are the most effective with a solar reflectance of 85. There are different cool roof standards for commercial low slope roofs and residential steep slope roofs.

Darker shades such as red green and blue reflect only 20. Commercial cool roof options include bright white membranes and white coatings. Another factor is whether you opt to use standard roofing materials in light colors or install solar reflective shingles. Solar reflective shingles range between 2 and 3 per square foot depending on manufacturer and vendor.

A high solar reflectance or albedo is the most important characteristic of a cool roof as it helps to reflect sunlight and heat away from a building reducing roof temperatures. Compared to the 30 solar reflectance of asphalt shingles that s a dramatic difference. Standard or dark roofs can reach temperatures of 150 f or more in the summer sun. This can lower roof surface temperature by up to 50f decreasing the amount of heat transferred into a building.

Residential roofing options include asphalt shingles metal clay tiles and concrete tiles. Energy star certified roof products reflect more of the sun s rays. Energy star certified roof products can help reduce the amount of air conditioning needed in buildings and can reduce peak cooling demand by 10 15 percent. To rate the level of reflectiveness of different products manufacturers have come up with a classifying system.

Owens corning cool roof collection shingles are specially designed to reflect the sun s energy and absorb less heat than standard shingles without limiting your color options. Cool roofs can be made of a highly reflective type of paint a sheet covering or highly reflective tiles or shingles. A cool roof under the same conditions could stay more than 50 f cooler and save energy and money by using less air conditioning. These typically come in mid range colors such as medium browns and grays.

Cool roof reflective coatings white roof coatings are opaque and reflective consisting of polymeric materials and some types of white pigment. Cool metal roofing is a popular cool roofing material as it can offer more than twice the solar reflectance of traditional asphalt roofing. A high thermal emittance also plays a role particularly in climates that are warm and sunny.