American Builders & Contractors Supply Co. (better known as ABC Supply) has put roofs over millions of heads. The largest wholesale distributor of roofing specializes in providing roofing, siding, windows, gutters, doors, and other exterior building products. ABC Supply operates about 455 outlets in some 45 states and the District of Columbia. The company carries its own brand of products under the Amcraft name and offers products from outside vendors. ABC Supply markets its products to builders and professional contractors. The family-owned business was founded in 1982 by the late Ken Hendricks, the son of a roofer, and his wife Diane. ABC Supply is one of about 30 diverse companies owned by Hendricks Holding.