PVC vinyl decking can generally be cleaned by regularly sweeping the deck surface with a broom. This will remove loose dirt and debris that might clog the drains or abrade the membrane surface during washing. Wet the deck surface and allow to soak for five minutes to soften any dried debris. Loosen the dirt from the membrane surface with a stiff bristle brush scrubbing in a circular motion which will help lift any dirt at the bottom of the textured surface. Finally, rinse the area of the membrane being worked with clean water to assess the effectiveness of the cleaning.