In order to support the weight of the filled swim spa, Archadeck of Fort Wayne built a support deck designed to accommodate 110 pounds per square foot of weight and pressure. This picture is an excellent demonstration of how a wood deck weathers. The material in both the new section and old section is pressure-treated pine. One is weathered and the new section is not. When the new section weathers, it will match the older section, but we may be back to replace to older section soon.