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.
1 Composite deck installation can cost $25-$70 or more a square foot (8,000 -$22,400 for 16'x20).es, even a heart operation is and should be a known cost (approx. $100,000 today). So a deck should certainly be something that you can research materials/labor cost and DECIDE for yourself whether you feel the item is worth what its price.