Irrespective of whether you should use a tension washer to scrub your deck is a topic that is often up for discussion. Some gurus say that it truly is okay to make use of a tension washer to scrub your deck while others say it is going to problems it. http://emilioaxnyu.dailyhitblog.com/3341446/the-5-second-trick-for-how-can-i-protect-deck-for-winter-too-cold-to-stain