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ABC Supply Co., Inc. is the nation's largest wholesale distributor of roofing, and one of the largest distributors of siding, windows and other exterior building products.

Welcome to our Rockville location on 30 Southlawn Court. Beacon is a leading provider of commercial and residential roofing, siding, windows, decking, insulation, specialty lumber, waterproofing, and air barrier systems to the North American building industry. Call us today at (301) 948-6066 to learn more.

Beacon Roofing Supply is a $1.3 billion and growing family of long-established regional suppliers of roofing and complementary building materials. The company consists of 10 regional companies in nearly 30 states and three Canadian provinces with more than 150 locations and 2,200 employees. The company s objective is to become a leading supplier to commercial and residential roofing and exterior contractors through a network of dominant regional suppliers. The company is one of the largest distributors of residential and nonresidential roofing materials and complementary building products in the United States and Canada. It is a leading distributor in key metropolitan markets and in the northeast, Mid-Atlantic, southeast and southwest regions of the United States and in eastern Canada. Beacon Roofing Supply has a location in Peabody, Mass.