Plastic decking, which is 100 percent recyclable such as Azek, looks like wood. But plastic decking has its problems. It might expand and contract in certain climates, loosening joints and making decks unstable.
In hot, sunny areas, plastic decks can get very hot on the soles of the feet and actually radiate heat, making them uncomfortable. Still, for a virtually maintenance-free deck, plastic decking may be the answer.
Composite decking material uses a combination of plastic and wood fibers. The newer technologies come in a multitude of colors, grain patterns and thicknesses. Premium products like Trex and TimberTech have the color all the way through the boards instead of just a coating, so scratches are hidden, the boards will not stain or fade, and they have excellent mold resistance.