Trex Company, Inc. is a manufacturer of wood-alternative composite decking, railing, and other outdoor items made from recycled materials.

[9] The idea for a process and product created to maximize the use of materials that would otherwise wind up in landfills is credited to inventors Kjell-Ake Gustafsson, of Binghamton, New York; John J. Muller, of Winchester, Virginia; and Roger A. Wittenberg of Newton, Pennsylvania.

[11] Effective October 23, 2023, Brenda Lovcik was named Senior Vice President and Chief Financial Officer.

[13] Their manufacturing process combines recycled plastic film, like grocery bags and dry cleaning wrap, with reclaimed wood, some of which is swept from the floors of furniture factories.

[17] Trex corporate participation in environmental efforts, coupled with its eco-friendly product profile, has led to recognition by governments, publications and trade groups.