We've seen green roofs before, but now a roof coating made out of cooking oil can do much more than absorb solar power in the summer. According to Live Science, the special roof coating morphs the roof's optical properties to reflect the sun's rays on hot days and absorb rays on cold ones.
Basically, what you get is a roof that saves energy by making your home's heating and cooling systems more efficient.
As Ben Wen, vice president of United Environment & Energy, puts it, the new special roof coating "will help save fuel and electricity and reduce emissions of volatile organic compounds from petroleum-based roofing products. In addition, it will provide a new use for millions of gallons of waste oil after it is used to cook french fries and chicken nuggets."
Cooking Oil Roofs
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Special Roof Coating Responds to Temperature and Saves Energy
Published: Mar 22, 2010 • References: livescience