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.
Composite Decking installation costs vary considerably by location. For an accurate estimate in your area, enter your zip code in the calculator above. Reduce total project cost by having multiple vendors bid on the same, detailed work specification of your Composite Decking project.