Gregg started with HBC In 1979 in our Bangor location formerly known as Bangor Roofing & Sheet Metal for 3 years. In 1987 Gregg returned as a temporary acting shop supervisor while one of the managers was recuperating from a vehicle accident. Gregg is currently the Sheet Metal Department Manager where he provides plan & spec estimating services, project managing and supervises the Bangor shop. Gregg is also certified by the National Air Duct Cleaning Association.