See the following link which discusses the positive impacts of shopping local. Not only is this important for all businesses, but especially for contractors and roofing contractors alike. Homeowners who use contractor services should ensure that the business they are dealing with is local to support what for most people, is a long term investment in their home (as long as they plan on living there, and for reselling value). In terms of roof replacements, the roof is typically a 25-30 year investment, therefore it is important to use someone local that you can trust.