High Albedo Roof Shingles

While the albedo of 0 2 represents a typical roof with a dark surface default value in energyplus the albedo of 0 5 represents a roof top with a bright color after weatherization deterioration of albedo during the first years and is a conservative estimate of the albedo of high albedo sloped roofs.

High albedo roof shingles. Cool roofing systems also have high thermal emittance which is the ability to radiate absorbed heat back into the air and away from your business. A higher albedo means that a roof has a higher ability to reflect the sun s rays and thus reflects more sunlight than traditional roofs. In california where many low rise residential homes are subject to the requirements of title 24 cool roof shingles have become a major trend in residential roofing. This roof has a high albedo and reflects about 63 of the energy from sunlight.

Many homeowners find that the best solution for their roof is to install asphalt shingles designed to meet cool roof requirements. The cool wall had a temperature reduction of 0 054 k 0 1 albedo whereas the cool roof had a reduction of 0 059 k 0 1 albedo. These asphalt shingles are manufactured with. What advantages do cool roofs bring to small businesses.

On a sunny day a roof that strongly reflects sunlight can stay much cooler than a roof that absorbs sunlight. Following the simulation results show that cool walls with an albedo rating of 0 9 showed very similar temperature reductions as that of high albedo cool roofs. By preventing a majority of the heat from ever reaching the surface these roofs work to greatly reduce hvac cooling costs during the summer months. Reflective roofs are more energy efficient and cooler inside and out.