The popularity of wood decks is increasing as more people become aware of the wide variety of wood species that are now available and also recognize the green aspects of wood as a renewable resource. A wood deck, however, only creates a unique outdoor living space and brings value to a home if its beauty is maintained. Wood decks are investments that require maintenance, and these ongoing costs are often not considered. In many cases, the natural resistance of woods to weathering and insects is reduced due to the inability to allow the extensive aging required to develop such properties. Therefore, the coatings industry must provide the needed protection.
During its lifetime, a wood deck will be exposed to a multitude of factors, such as ultraviolet (UV) radiation, rain (acid), dirt, chemicals, scratches and foot traffic, which can significantly alter the appearance and performance of the wood. Wood can become gray in color or show a wash of tannins; it can be sensitive to water, mildew, fungi, bugs, etc.; cracking or delamination can occur; and dirt pick-up may increase.