Santa Rosa Beach Roofing: Article About Roof Cooling Methods
Florida residents rely on air conditioning because of the state's hot and sunny climate. Florida's humidity compels residents to run air conditioners at even lower temperatures to feel comfortable. The state also houses many retirees who are especially susceptible to heat stroke, contributing to the high bills for cooling throughout Florida.
Cool roofs help save money on air conditioning bills. A cool roof transfers less heat to the rest of the house, resulting in a cooler home. There are several methods to constructing a cool roof. A Santa Rosa Beach roofing specialist can help a homeowner decide which solution is best for his home.
The most effective type of cool roof is a reflective roof. The sun's rays bounce from the surface of a reflective roof instead of becoming absorbed. The reflected sunlight does not gain the opportunity to heat the house below. Light colored roofs naturally reflect more sunlight than dark ones. Studies have shown that white roofs save residents 20 percent on air conditioning costs.
Even though white roofs save money, many homeowners find these roofs undesirable for aesthetic reasons. Fortunately, modern technology has now made colorful reflective roofs a possibility. Tile and metal roofing materials can be coated with "spectrally selective" paints. These special paints absorb only part of the visible light spectrum, so the paints appear in colors other than white. At the same time, the spectrally selective paints reflect infrared and ultraviolet rays that are responsible for much of the sun's heating power.
Have a question regarding insulation or residential roofing? Please ask a roofing from Art Construction of Santa Rosa Beach FL today.
Reflective asphalt shingles in shades of brown and gray are available.
Homeowners who cannot use reflective roofs can still keep their homes cooler by installing radiant barriers instead. A radiant barrier blocks heat from reaching other parts of a house. A typical radiant barrier is a layer of aluminum foil placed under the rafters of a roof. Aluminum has a low emissivity, which means it does not easily release absorbed heat. Because of the aluminum barrier's low emissivity, heat does not reach the space below the barrier. Sometimes, an attic's geometry does not allow a foil radiant barrier to be installed. In this case, a low emissivity spray coating can be applied instead. In the Southeast, radiant barriers have been shown to save homeowners 7 to 10 percent on cooling bills.
Radiant barriers are only effective for houses with dark roofs that are not reflective. The underside of a reflective roof does not heat up, so a radiant barrier does no good under light colored roofs. A radiant barrier can even be counterproductive in this case. At night, the barrier blocks heat from dissipating into the air around the house.
Cool roofs save money and are good for the environment. A reputable roofing contractor can equip a homeowner's roof with an appropriate cooling solution.