Metal roof installation, materials, prices and manufacturers

Environmental Benefits of Steel Metal Roofing




Not only are steel roofs 100 percent recyclable, they are often made from recycled materials, unlike traditional roofing. Because metal roofs are so lightweight compared to other roofing materials, when a new steel roof is installed, it can be placed over the existing roof. This can provide the double advantage of insulation and eliminates the need to remove the old roof, minimizing waste taking up limited space in our landfills.

Metal roofs are included on the U.S. EPA’s Energy Star Roof Products Program because of their environmental benefits.

Metal roofing can reflect up to 70 percent of solar rays. High reflectivity allows the roof as well as the rest of the building to stay cooler. Cooler roofs translate directly to savings for homeowners. A study performed by the Oak Ridge National Laboratory found that reflective roofs save up to 40 percent in heating and cooling energy costs.

Reducing energy consumption means less fossil fuel is required to power the heating and cooling needs of homeowners, and that fewer greenhouse gases are released into the atmosphere.

According to Oak Ridge National Laboratory research, “Metal roofing retains solar reflectance over time better than other roofing products because it resists the growth of organic matter and sheds dirt more readily than other roofing materials”.

It was also found that metal roofs “maintain their energy efficiency better over time than any of the other roofing systems studied.” Metal and steel roofs are some of the most durable material available, making it also one of the longest lasting. Over its life, a steel roof continues to save energy – and money – paying for itself in as little as nine years.

Steel roofing is the sustainable option. A traditional built-up roof often must be replaced every nine to seventeen years, whereas a steel roof can last 30 years or longer. The waste from other roofing materials, such as asphalt shingles or concrete, has nowhere else to go but the dump. There are millions of tons of roofing waste generated every year that ends up in the landfills, and this waste can be drastically reduced, if homeowners begin installing longer lasting cool metal roofs.

Note: Aluminum roofs can last over 100 years, as they are not subjected to rusting, which can dramatically shorten the lifespan of a steel roof. However, modern steel metal roofing uses high-grade galvanized steel (G-90 steel or Galvalume), which is much more resistant to corrosion and rust. Also the high quality Kynar 500 metal roofing paint provides additional protection for steel metal roofing panels. G-90 and Galvalume coated metal roofs can last as long as 50 years or more. Only the low grade / gauge steel roofing (26 ga) with acrylic paint are expected to last 20-30 years before they begin to rust. These panels are usually used in less expensive exposed fastener roofing.

Popular metal roofing styles:

  • Standing Seam Metal Roofing – vertical panels with concealed fasteners, made using steel, aluminum, zinc, copper and other metals. Architectural standing seam roofs offer an aesthetically pleasing look combined with lifetime roof performance, resistance to ice dams and reduced heating costs.
  • Metal Roofing Shingles provide lifetime roof performance combined with many styles – these can look like natural slate, cedar shakes and shingles, concrete tiles, etc. Metal shingles come in smaller form factor, and therefore can be made from thinner metal, while maintaining structural strength and rigidity of bigger standing seam panels. Thinner material allows metal shingles to be less expensive than standing seam roofing, and they are also easier to install, reducing the overall installation cost.

Written by Leo - roofer with a vision. Follow Leo on Google+





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Written by admin

Posted on November 1st, 2012 at 2:15 pm

Posted in Metal Roofing Materials

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