Co-Extruded Composite Decking Explained | Wood and Beyond Blog Feb 19, 2018. Co-extruded technology is the most advanced in the composite decking industry. With a co-extruded surface, your deck can have superior.
What is the difference between normal classic WPC boards and Co. Normal deck boards are the first generation composite decking boards. Co-extrusion or capped deck boards are WPC second generation boards.