Allied Building Products Corp.
Allied Building Products Corp. has grown to become one of the largest and most successful building products distributors in the United States. Our branches supply residential roofing and siding contractors, commercial roofing & waterproofing contractors, as well as drywall and acoustical tile contractors. Allied is a subsidiary of Oldcastle, Inc. which is the North American holding company of Ireland-based CRH plc. Operating in 31 countries with over 80,000 employees, CRH is one of the largest building materials companies in the world.