84 Lumber is a privately held building materials and services supplier to professional contractors and build-it-yourselfers. The company was founded in 1956 by Joe Hardy and has since grown to become the largest privately held supplier of building materials in the United States. 84 Lumber operates more than 250 stores across the country and offers a wide range of products and services, including lumber, roofing, siding, doors, windows, and kitchen and bath design. The company is headquartered in Eighty Four, Pennsylvania.