Compare Deck Materials: Wood, Wood-Composite, and Plastic3 Jan 2018 ... Comparing the most popular decking materials such as wood, wood-composite, and PVC will help you choose before you buy. ... Wood Composite deck. This Wood Composite deck Graces an outdoor Pool. Astronaut Images/Getty Images. When you build an outdoor deck, you are usually presented with a choice of three flooring materials: natural pressure-treated wood, wood-composite (a mixture of wood fibers and plastic), or an all-plastic product called PVC.