High Albedo Metal Roofing

Facilities located in ontario california and route trucks servicing northern california.

High albedo metal roofing. These surfaces warm to 140 to 170 degrees fahrenheit. In los angeles the average roof albedo is about 0 17. 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. You must have both high reflectivity 70 and high emissivity 75.

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. This is because the high albedo roof reduces the. Berridge metal products have a high recycled content and are 100 recyclable at the end of their lifespan. 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.

A sample cool roof. Reformulate or coat black membranes to make them reflective. 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.

A sample. 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. Recycled content of berridge metal. Click on the green marker to view this building in google maps.

Built up roofs consist of a base sheet fabric reinforcement layers and usually a dark protective. As expected high albedo roofs save summer cooling energy but also increase the required winter heating energy. On a sunny day a roof that strongly reflects sunlight can stay much cooler than a roof that absorbs 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.

This roof has a high albedo and reflects about 63 of the energy from sunlight. I can say from practical experience that nothing beats a white metal roof reflectivity 80 90 and high emissivity 80 90. How they can be made cool. 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.

Cool metal roof i live in key west fl where it tends to get a liitle hot. 714 536 5271 building safety. Single ply membranes are pre fabricated sheets rolled onto the roof and attached with mechanical fasteners adhered with chemical adhesives or held in place with ballast gravel stones or pavers.