The Roofing Siding and Insulation Material Merchant Wholesalers industry is experiencing greater than average employment growth as of late. In 2014 the government estimated a total of 31,272 workers, then just 12 months later it had climbed to 32,503, an increase of 3.94%. Calculated reported accident rates have outpaced the Lumber and Other Construction Materials Merchant Wholesalers Industry by 61% over the past 5 years.