Helping people build and finish decks that last longer than usual is one of my specialties, and the video below shows the most common mistake people make when building decks. Even professional builders make this error all the time, and it leads to problems that can spread beyond the deck itself. More than 110,000 people have viewed this video. It’s part of Love Your Deck building course for people who want a deck that’s way longer lasting and more beautiful than average. Click below to watch the video and click here to check out the course risk-free.