Allied Building Products Corp., a division of Oldcastle, Inc. (NYSE: CRH) announced today that it has completed its acquisition of Austin Acoustical Materials, Inc., a privately held interior product building materials supplier based in Austin, Texas. Austin Acoustical Materials is a one branch distributor of drywall, Armstrong ceiling tile and related products founded in 1985 and an important addition to Allied’s interests in central Texas. About Allied Allied Building Products Corp. is a wholesale distributor of exterior and interior building materials with $1.7 billion in annual revenues. Allied services professional contractors in 29 states with residential and commercial roofing, waterproofing, siding, windows, drywall, acoustical, metal framing and solar products along with all related accessories. Allied is a division of Oldcastle, Inc., the North American holding company for CRH plc (NYSE: CRH). For more information about Allied Building Products, visit www.alliedbuilding.com.