There are many products on the market today to consider when building a deck. Wood, composite, aluminum, pvc are just a few of the various categories, but at the end of the day wood still is the dominant leader. If you have a deck on your house it more than likely has a pressure treated 5/4 deck board and depending on how you have maintained the deck it may or may not look very good. So you may be heistent to replace it with the a pressure treated product.
The Surprising Economics of Adding A Deck