PU injection grouting is an effective solution for stopping active water leaks in concrete structures. This method involves injecting polyurethane resin into cracks, joints, or voids, where it expands and forms a waterproof seal. PU injection grouting is widely used in basements, tunnels, walls, and slabs to prevent further water intrusion and structural damage. https://shakuraconstruction.sg/services/pu-injection-grouting/