Used only in combination with the Quick-Step Hydrokit. Make room for the Quick-Step PE Foam! This one-of-a-kind joint filler is the perfect addition to any living area, kitchen or bathroom. It’s an ideal alternative to traditional cork that is used around the perimeter of your room – no more worrying if your floor will be watertight! With this PE Foam joint filler, you can get a secure and dependable fit without restricting movement or worse yet, sacrificing your style.