Convoy Supply opened for business in 1972 as a one-step distributor to roofing, insulation and siding contractors. Our commit ... ment to excellence in customer service is the cornerstone philosophy of the company. An impressive and diverse fleet of vehicles, a growing number of strategic locations and an outstanding team of industry veterans and specialists all contribute to that goal. We are proud of the relationships that we have built over the past four decades and honored by the friendships we share with our customers. Today, Convoy is the largest wholesale supply company in Canada and across the Pacific Northwestern United States and Maryland. We have multiple distribution warehouses operating in BC, Alberta, Saskatchewan, Manitoba, Ontario, Quebec, Washington, Oregon, and Maryland. read more