Armstrong World Industries is a U.S.-based building products company founded in 1891 that designs and manufactures interior and exterior architectural applications. Its core businesses center on ceilings, specialty walls, and exterior metal solutions, with products made from mineral fiber, fiberglass, metal, felt, resin, glass, wood, and wood fiber. The company also participates in ceiling suspension systems through its Worthington Armstrong Venture joint venture. AWI sells primarily into the Americas construction and renovation market, where distributor relationships and commercial construction activity are central to demand.