High Albedo Roofing Materials

High albedo materials can save cooling energy use by directly reducing the heat gain through a building s envelope direct effect and also by lowering the urban air temperature in the neighborhood of the building indirect effect p p this project is an attempt to address high albedo materials for buildings and to perform measurements of roof coatings. In los angeles the average roof albedo is about 0 17. As one would expect albedo roofs are formulated with special high eminence materials that keep project a high level of thermal energy back into the atmosphere.

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The results indicate that high albedo materials can have a large impact on the surface temperature regime.

High albedo roofing materials.

This roof has a high albedo and reflects about 63 of the energy from sunlight. On clear sunny days when the solar noon surface temperatures of conventional roofing materials were about 40 degrees c 72 degrees f warmer than air the surface temperature of high albedo coatings were only about 5 degrees c warmer than air. 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. Coolroof heat reflective paint has been designed to give relief from roof heat as it is a high albedo paint having high sri value which makes it most suitable for roof insulation.

Click on the green marker to view this building in google maps. Its solar reflective properties make it one of the most suitable solar. 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. A sample.

Being a roof cooling and insulation paint it will act as a protective coating and best summer cool paint. A sample cool roof. This high sri paint acts as heat reducing paint which can be applied as cool roof coating having single objective of roof insulation. On a sunny day a roof that strongly reflects sunlight can stay much cooler than a roof that absorbs sunlight.

In the morning and in the late afternoon the high albedo materials were as cool as the air itself.

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