According to the National Institutes of Health and many other sources, the stress response is caused. by hormones. Hormones are chemicals, produced by glands and carried through the bloodstream, that. affect the activities of organs in the body.
Composite Decking Costs. 1  Average: $35 per square foot. 2  For polythylene-based composite decking, the average cost per square foot is $7.82. 3  For polypropylene-based decking, the average cost is $8.68 per square foot.
Now you know the average cost to build a composite deck, which includes the labor and material, and whatâs involved, so you can decide to do it yourself or hire a contractor.o build a 300-square-foot ground level deck made of Trex, a composite material made of reclaimed wood and plastic, a contractor will charge $7500, which includes the labor and material.