What is a composite deck material?
The material is usually composed of fine wood particles (sawdust) and 50% or more recycled plastics. The plastic is either a Polypropylene (hard plastic like keyboards and TV’s) or Polyethylene (softer plastic like plastic bags or milk jugs) and fine wood particles (wood flower). It is manufactured under heat and pressure to encapsulate the wood in the plastic and a UV inhibitor prevents any lightening in color. Polypropylene composite will retain its shape so you can make curved railings and benches. Click on the “Composite” page for information about the advantages of composite materials. Why do composite decks still have wood load-bearing posts? While composite lumber is tough and durable, it does not have the same stiffness as wood. Therefore, it is not intended for use as a load bearing post, joist or any other primary load-bearing member.
