WHAT EXACTLY IS COMPOSITE DECKING MADE OF?
Quite simply, this decking is made from a mixture of wood and plastic. The wood content offers strength and rigidity to the decking, along with better performance in flammability tests. In addition, the wood is cheaper than plastic and experiences less thermal expansion that the plastic content does. It gives the alternative decking a more natural wood look but it also increases the vulnerability of the decking to staining and the possibility of mold and mildew. The plastic content of the decking can vary but typically manufacturers use polyethylene, most commonly used for plastic bags and drink bottles. Recycling this material is a good way to reduce our waste and save energy. Occasionally a harder plastic is used such as polypropylene or PVC (vinyl). Most manufacturers also include additives such as flame retardants, mold inhibitors and UV stabilizers.
