Composite decking is made of a mix of wood fibers (usually obtained from sawdust) and a plastic resin, either polyethylene or PVC. The result is something that looks rather similar to wood, though composite decking with PVC does tend to have a more ‘plastic’ appearance. The main advantage of composite decking over wood is its durability. It requires virtually no maintenance and has a lifespan of up to 25 years. It doesn’t rot or warp and it resistant to termite infestations. Fade-resistant composites are also becoming more readily available. Durability and less maintenance comes at a cost. Composite decking is more expensive and it obviously doesn’t look as authentic as real wood.