Posted On: 11/05/09 01:00 PM Geographical Location: texas
how does the industry measure the reflective value of metal roofing. the city has an ordinance that states a metal roof can not have a reflectivity factor of 20 percent or greater? Where would one find this?
Todd Miller 3447 Posts "Classic Products, Inc."
Replied On: 11/07/09 11:21 AM
The reflectivity ratings you will see on some panels are referencing solar radiation -- their ability to reflect away radiant heat. In that case, higher numbers are good.
I think these folks do not want shiny roofs. That is unrelated to solar reflectivity and I do not know of any measurements for it, including the 20% they reference.
There is some confusiion afoot with them.
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The Metal Roofing Alliance is a consortium of metal roofing manufacturers, suppliers, distributors, and contractors with the main goal of educating consumers about the many benefits of metal roofing.
