High Albedo Metal Roofing

A sample.

High albedo metal roofing.

As expected high albedo roofs save summer cooling energy but also increase the required winter heating energy. Built up roofs consist of a base sheet fabric reinforcement layers and usually a dark protective. In the morning and in the late afternoon the high albedo materials were as cool as the air itself. The florida solar energy center has studied this issue.

Western metal deck an independent family owned and operated leading provider of corrugated metal roof panels metal roofing accessories metal roofing supplies metal wall panel systems and verco metal decking. Energy efficient metal roofing community development department 2000 main street third floor huntington beach ca 92648 planning. How they can be made cool. While conventional roofing materials warm up by an average 0 055 degrees c w m sup 2 sup the high albedo surfaces warm up by an average 0 015 degrees c w m sup 2 sup p.

On a sunny day a roof that strongly reflects sunlight can stay much cooler than a roof that absorbs sunlight. Reformulate or coat black membranes to make them reflective. In huntington beach the albedo value of your roofing materials should be as high as possible while your emissivity value should be as low as possible. You must have both high reflectivity 70 and high emissivity 75.

I can say from practical experience that nothing beats a white metal roof reflectivity 80 90 and high emissivity 80 90. This is because the high albedo roof reduces the. Recycled content of berridge metal. 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.

Facilities located in ontario california and route trucks servicing northern california. 714 536 5271 building safety. Berridge metal products have a high recycled content and are 100 recyclable at the end of their lifespan. 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.

Sri measures the roof s ability to reject solar heat defined such that a standard black reflectance 0 05 emittance 0 90 is 0 and a standard white reflectance 0 80 emittance 0 90 is 100. This roof has a high albedo and reflects about 63 of the energy from sunlight. For the building types with multi zone reheat systems hospital large office medium office and primary school some net heating energy savings can be seen. A sample cool roof.

In los angeles the average roof albedo is about 0 17. Bare metal or metallic surfaced roofs often have a high solar reflectance typically 50 percent or higher and may have low thermal emittance anywhere between 2 percent to 66 percent depending on their surface treatment. These surfaces warm to 140 to 170 degrees fahrenheit.