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).ome Depot Cost of Materials today $1478.98 Lowes Cost of Materials today $1492.56 Local lumber supplier Cost of Materials today $1704.54 that comes out to $11.11 per square foot on an average cost of $1600.00 for materials. if it takes me and my three guys 2 1/2 - 3 days with footings.