Green Bay Decking's low maintenance decking products are made of there patented blend of BioDac®, rice hulls, and virgin High Density Polyethylene which makes the decking naturally resistant to extreme temperatures and moisture. DuxxBak, Green Bay Decking's most popular product line works by using a interlocking decking system that locks the deck boards together while creating a channel between the deck boards to allow water to run away from the deck creating an additional dry outdoor living space, so you can enjoy the outdoors rain or shine.