Active water leaks and cracks just met their match. The Bull-Bond Water Stop Hydraulic Cement is a fast-setting repair compound designed to stop them and create a smooth finish. Formulated with hydraulic cement technology, it expands as it cures to create a strong, watertight seal that helps prevent further water infiltration. It is ideal for repairing foundations, basements, retaining walls, swimming pools, tunnels, and other structures exposed to moisture and water pressure. The durable formula bonds securely to concrete and masonry surfaces, providing long-lasting protection and structural integrity. Suitable for both interior and exterior applications, this hydraulic cement offers a reliable solution for waterproofing and emergency leak repairs in residential and commercial projects.