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.
Prices vary because there are so many different companies, but composites are typically less expensive than plastic lumber. For example, for 5/4 x 6-Â­in. decking, expect to pay about $2.50 per linear foot for composites, and $3 per linear foot for plastic lumber.Most composite decking and plastic lumber manufacturers also offer a line of handrails, balusters, fascias and other decorative trim.rices vary because there are so many different companies, but composites are typically less expensive than plastic lumber. For example, for 5/4 x 6-Â­in. decking, expect to pay about $2.50 per linear foot for composites, and $3 per linear foot for plastic lumber.