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Chesapeake Roofers: Article About How To Make A Roof Cool

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Most roofs are made of some material that soaks up the sun's rays, and they beat down all day. In the summer, a home's air conditioner has to work against that blazing heat to cool down the house. It doesn't take long for all of that extra energy to get expensive, but homeowners have options for reducing costs and staying cool.

A cool roof reflects the sun's rays to keep the home from soaking in all of that heat. This solar reflectance is called albedo. It can result in a dramatic difference in the temperature of the roof surface. Chesapeake roofers know that the average roof is 150 degrees Fahrenheit on a sunny day, but a cool roof is likely 50 degrees less than that. There are different ways to make a roof reflect energy. The best choice for any individual roof depends on how steep it is and what it is made of.

Most flat roofs can be converted with specially treated membranes or spray foam. For built up roofs, the protective layer can be made of different materials. Instead of the traditional black asphalt, gray shale or marble chips can be mixed in.

For shingle roofs, it is recommended to buy cool roof shingles. These are asphalt shingles, but the granules have a special reflective coating.

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It is possible to cover the shingles with treated membrane, but most shingle manufacturers do not recommend this. Doing it against recommendation could void any warranty on the roof.

A tile roof may already be classified as cool. Many tiles are naturally reflective enough to achieve cool roof standards because of the materials and glazes used. Other tiles can be treated to increase their reflectivity.

Metal roofs often have high reflectivity, but they may not insulate well. These can also be painted with special coatings to increase their thermal emittance as well as their solar reflectance.

Installing a cool roof can save the homeowner money in many different ways. The decrease in energy use translates to instant savings on the utility bill. The building may also be eligible for Energy Star tax refunds for even more savings.

The choice of whether to install a cool roof depends on how cost effective it will be. When installing a new roof, cool roofing components often increase the cost a small amount. Converting an existing roof, however, can be expensive, especially if it is necessary to tear of the existing roof and install a new one.

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