North American market for Commercial Roofing Material to be worth $5.9 billion in 2014

North American market for Commercial Roofing Material to be worth $5.9 billion in 2014: "The third-largest segment in 2009, thermoplastic polyolefin (TPO), is projected to increase at a CAGR of 3.8% through 2014, rising from $336 million to $406 million.The green roof segment, though relatively small, is expected to increase at the highest CAGR, 24.5%, from 2009 to 2014, growing from $28 million to more than $83 million. Commercial roofing in North America defines the livelihood of more than 28,000 roofing contractors, thousands of manufacturing employees, and distributors. Although it was hard hit by the recent economic downturn, the roofing industry remains a vital part of the economy."