The demand for roofing materials is slated to grow 5.7% per year between 2010 and 2015, according to a forecast released by the Freedonia Group. The demand for asphalt shingles is expected to increase 7.3% yearly until 2015, and much of that will be for laminated asphalt shingles. "In the long term, increasing use of laminated shingles will constrain replacement demand, as these products can have lifespans more than twice that of conventional asphalt shingles," the group said.

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