Deck finishes can be selected in water repellent, semi-transparent, film forming, or penetrating types. The conditions that will affect the deck should be taken into consideration prior to selecting the deck finish that is appropriate for you. Weather, traffic, swimming pools and pets can be just a few of the elements that can affect the deck finish .

Film forming deck finishes are generally considered paints and should not be used on decks that are exposed to any form of weather because the deck finish will tend to crack and cause decay over time.

By comparison, penetrating deck finishes are the most effective for today's decks because the finish penetrates the wood, creating a protective bond beneath the wood that repels water and the elements. Penetrating deck finishes also prevent premature decay of the wood, and ensure that the structure can be enjoyed for many years.

Water repellent preservative deck finishes are considered effective for short-term coating of a deck that is exposed to the inclement elements consistently. These deck finishes contain a mildewcide that prevents mildew and decay of the wood, although this type of treatment is not beneficial for decay prevention over the long term.

Finally, semi-transparent stains add a color to the wood, while at the same time allowing the wood tones to remain evident in the finished product. This type of deck finish can be found in either latex or oil, yet, because they contain a small degree of paint they do not last as long as penetrating deck finishes.