To clean a composite deck, sweep it with a broom or leaf blower at least once a week to get rid of dirt and debris. The dimensionally stable steel of trex elevations stays in place, giving you consistently stronger, straighter, safer and smarter decking than what wood can offer. For a sleek yet modern look, enhance your landscape with What may work on a properly built deck in a dry area — may not at the beach (hot) or on a ground level