Deck Franchising.- Trex Composite Decking Trex Composite Decking. Built in Winchester, VA for the Trex Company. Low level deck allows for alternate design elements such as wide cascading steps, planter boxes, and custom benches. Notice use of mutiple material colors. Gallery If you are in the market for a composite deck, sunroom, above ground pool deck, screened porch, porch enclosure, room addition or any other outdoor living addition to your home, American Deck's skilled Craftsmanship is second to none.