Allied building products counts home builders and contractors as part of its circle of friends. serving the commercial and residential construction markets, the company distributes exterior and interior building materials, including roofing, siding, drywall, and acoustical tile, from major manufacturers. allied also markets products under its own cutting edge and tri-bilt brands. the firm operates about 180 branches in 30 states, and it maintains a fleet of more than 2,700 vehicles, including cranes and delivery trucks. allied is a subsidiary of oldcastle (itself a subsidiary of crh). the company was founded in 1950 as a family-operated roofing and custom sheet metal fabrication business.