GN Exteriors is a local roofing contractor specializing in residential roofing and commercial roofing in braintree ma. As a leading roofing contractor in the South Shore and the best roofers in Braintree, we provide our customers with the highest quality roofing products for roof replacement, repairs, and maintenance. We believe in educating our customers on the roof installation process and the options available to them. We proudly serve Boston and surrounding areas including the South Shore. CertainTeed ShingleMaster TM and Owens Corning Preferred Roofing Contractor.