This video shows you how to use Applied Technologies concrete crack injection materials to stop a water leak in a basement wall control joint. The crack starts under a basement window and then joins a wooden control joint. Polyurethane is injected into the crack and then expands on contact with water. After curing the leak will be stopped. We have many kits for the DIYer or a professional contractor who needs to waterproof a leaking basement crack. For more information or to order call 877-277-5948 or click https://www.appliedtechnologies.com/p...