High Albedo Roofing Materials

A sample cool roof.

High albedo roofing materials. 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. Its solar reflective properties make it one of the most suitable solar. 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. The results indicate that high albedo materials can have a large impact on the surface temperature regime.

On a sunny day a roof that strongly reflects sunlight can stay much cooler than a roof that absorbs sunlight. A sample. 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. In los angeles the average roof albedo is about 0 17.

This roof has a high albedo and reflects about 63 of the energy from sunlight. 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. Being a roof cooling and insulation paint it will act as a protective coating and best summer cool paint.

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