To architects, building developers and owners, contractors, and the entire commercial glazing community, Oldcastle BuildingEnvelope is one of the leading suppliers of products specified to close the building envelope. They include: custom-engineered curtain wall and window wall, architectural windows, storefront systems, doors, skylights, and architectural glass. Company products include Oldcastle Glass StormGlass, Hurricans Resistant Glass, Oldcastle Glass SunGlass, Solar Control, Low-E Glass, ArmorProtect and the ArmorResist line of safety glass to name a few. Oldcastle BuildingEnvelope is a subsidiary of CRH plc, one of the top five international building product companies.