I’m sorry, but my Water Putty is not intended to be a cure for leaking concrete foundations and other water leakage areas. It is not waterproof and doesn’t work well on leaking basement walls, cracks in concrete pools, or fountains where there is constant hydraulic pressure. There are several other products specifically designed for this purpose that will work better for you. Check at your local home center, lumber, or hardware store. My Water Putty can be used with concrete, but it is intended for cosmetic repairs,and not structural sorts of repairs.