When this standing-seam metal roof is no longer in service (after about 50 years!), the metal can be recycled.
If you’d like a roof that will outlast a conventional asphalt shingle roof and is made from environmentally friendly roofing materials, consider eco-friendly roofing options. Many of them are virtually immune to hail. Green roofing products are many and varied, ranging from recycled-plastic shingles to recycled-metal roofs to sustainably harvested or reclaimed wood roofs. The best option for your home depends on the design of your home, local building codes and price considerations.
Read more: http://www.motherearthnews.com/green-homes/eco-friendly-roofing-options.aspx#ixzz1Y8UHa4oI
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Green Real Estate Appraiser 