Homeowners who have re-roofed with an American Metal Roof have found their air conditioning costs to decrease by up to thirty percent and their heating bill to decrease by 10% after the roof was installed with proper ventilation. This is due to the roofs low emissivity value. Rather than pass the heat of the sun into your attic, the aluminum panels reflects up to 94.5 percent of the sun’s rays. This reflectivity is an inherent property of the aluminum the roof is composed of, regardless of the color you choose. According to testing conducted by the Florida Solar Energy Center, Aluminum allows up to 34 percent less attic heat gain than traditional roofing materials. This means a lighter load for your air conditioner and reduced energy bills for you.