When the less demanding plastic-composite decking appeared on the scene in the .. Highlight: A covering of proprietary resin gives it excellent stain, scratch, and .. Narrow gaps can easily become clogged, increasing the chance of stains.
19 Mar 2018 . Replacing wood deck boards with composite revitalizes the deck and saves the . boards are slip resistant because of their rubber-like resin coating, called a cap. . The centerline is usually the middle of a joist's narrow side.