Thinking about adding or replacing a deck? Before you choose pressure-treated wood or other deck lumber, think again. Now there's a better choice that give you the beauty of wood without the constant maintenance - Boardwalk Composite Decking and Railing from CertainTeed. years of research and development have gone into creating Boardwalk Composite Decking and Railing to meet the needs of today's active lifestyles. Boardwalk's high-performance characteristics make it the right choice for exterior applications such as decks, docks, porches, pool surrounds, walkways, stairs, railings, and more. And since Boardwalk requires virtually no maintenance, you can spend more time enjoying your deck, less time caring for it.