In a comfortable home with slight humidity variations through the seasons, plastic wood for decks responds by expanding and contracting. These changes may be noticeable. During warm, humid weather, plastic wood expands. During dry weather, plastic wood contracts. This seasonal movement is a normal characteristic of plastic wood for decks, and it never stops, regardless of the age of the wood. One of the best ways to ensure that plastic wood for decks will give the performance homeowners expect is to install humidity controls and ensure that they are functioning before the decking is installed.
A homeowner who chooses plastic wood for decks is making an investment in a decking that will last 40 years or more, and he or she should protect that investment by installing humidity controls--a tool that helps the decking maintain a beautiful, trouble-free appearance.
These composites are usually a single color, simple grain or combed finish, and are a mixture of recycled wood fibers, dust or flour and a plastic binder usually HDPE(high density polyethylene). The ratio of plastic- to-wood is mostly in the 50% plastic, 50% wood range. This is the most cheap composite decking choice for St. Louis decks but it will still hold up OK under the scorching St. Louis summer sun and freezing St. Louis winters. Most of these composite boards will look very similar to each other, although there are basic color choices. Basic composite decks require periodic cleaning and care should be taken not to scratch or stain them.