In this article we will discuss the various types of standard roofing choices and their qualifications as a green roof. Among the current roof choices available for standard residential housing, some are more eco-friendly than others.
Many would argue that the worse offenders are composition asphalt shingles. These roofing shingles are often chosen for their cheap price price and are made of a composite of asphalt, cellulose, and mineral grains. While it is true that some of these shingles are made using recycled materials, they contain petroleum products and no one ever recycles the roofs themselves. Due to their short lifespan, asphalt shingles constitute a large percentage of all building material waste. This is not a choice you want to make if you are serious about green roofing.
Recycled synthetic shingles can be used instead of asphalt shingle or cedar shake. These shingles are made using rubber or plastic that is combined with wood waste. They are manufactured to imitate wood shake and are made of materials that would otherwise be waste. Because of their construction, they resist UV rays, fire, and are long-lasting. Recycled synthetic shingles compare in lifespan to fifty-year asphalt shingles. While the roofs themselves cannot be recycled because of their composition, they are made mostly from recycled materials, making them an imperfect, but good choice for a green roof.
Cedar shakes are a poor material for use in roofs and are banned in many areas for their susceptibility to fire. They deteriorate quickly and the best cedar shakes are made from old growth lumber, which is a non-renewable resource. All of this makes cedar shake a poor choice for a green roof.
Clay roofing tiles are one of the very best choices for a green roof. Because of their weight, installation may require a strengthening of the roof structure. Clay roofing tiles are available in a wide range of colors, so remember that the lighter tiles are better suited for solar reflection. Clay tiles are non-leaching and make an excellent base for collecting water. Clay roofing tiles should be at the very top of your list for green roof materials.
Slate tile is another great choice for a green roof. Like clay tile, a slate roof can require that you beef up your roofing structure because of its weight. Slate quarrying, however, has a much-reduced environmental impact when you compare it to the production of other roofing materials. Slate is non-leaching and can last hundreds of years. Slate tiles make a good choice for green roofing materials.
Metal roofs are commonly made from steel, copper, or aluminum. They are light and therefore use less energy to ship. They are commonly made from recycled materials and can be indefinitely recycled over and over again. Because mining and smelting metal has a large negative environmental impact, it is best to use metal roofing made from a high percentage of recycled material. In the case of copper and steel roofs there is a current debate about the cleanliness of roof runoff and its impact to the eco-system. Therefore, when choosing a green roof, consider choosing a mostly recycled aluminum product in preference to any others.
To learn more about ways to go green, save money and help the planet, go here: Free Tips For Going Green
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