Composite decking is made up of different types of recycled materials—mainly plastic and wood. Composite decking, unlike traditional wood decking, requires no sealant or stains and comes in a wide variety of styles, colors, and textures. We use Timbertech / Azek / Fiberon/ TREX composite decking materials for deck boards, stairs, and RDI, Vinyl, Aluminum, steel railing options. Their products are backed by a 30-year warranty (that we will help you set up).