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. Composite decking can imitate the appearance and color of wood but requires no staining or maintenance beyond washing because of its synthetic composition. Cost Owl states that building a composite deck, with the same characteristics as a basic wood deck, costs $15,620 or about $48.81 per square foot. Although this price is initially higher than a wood construct, it saves money in the long run in the cost and time required for staining.