For heavy-duty water seepage in basements or retaining walls, high-pressure PU injection grouting offers a permanent fix. This technical process involves using a specialized pump to force polyurethane resin into structural cracks at high pressure. As the chemical reacts with water, it expands up to 20 times its original volume, creating a robust, rubberized seal that stops water flow ... https://shakuraconstruction.sg/services/pu-injection-grouting/