If you are thinking about getting a roof that will be environmentally friendly, you should think about getting metal roofing. You can find a quality metal roofing company that can help you choose from many different styles like a four-way interlocking design. The interlocking designs can give you the strength that you might want in a roof and will eliminate the typical expansion and contraction problems. You can get your product coated with 70% PVDF resin which gives the roof long lasting durability. So what are you waiting for? If you need a new roof, you should call a metal roofing company and see how they can help you.