Bradco Supply Corp | 2,791 followers on LinkedIn. Ranked as one of the nation’s largest distributors of building materials, Bradco Supply is committed to providing contractors and builders with quality products, competitive prices and the best customer service in the industry. Bradco traces its roots back to a small makeshift warehouse in Central New Jersey and a roofing distribution business that operated much differently than it does today. When Bradco opened its doors for business in 1966, manufacturers sold most of their materials directly to customers, using common carriers to deliver each order.