Our FlexiSpan Crack Repair system is the best concrete patch solution.  A common way to fix leaking cracks in the basement walls is to fill it with some type of sealant.  That will work for a while, but as the house continues to settle the crack may open letting the water in again.  Our Flexispan Wall Crack Repair System consists of three layers of protection, a bead of sealant, a foam drain strip, and a sealant overlay.  Water will not be able to get through these three lines of defense.