PU injection grouting is an effective waterproofing method used to stop active water leaks and seal cracks in concrete structures. This technique involves injecting polyurethane resin into cracks and voids, where it expands and reacts with water to form a strong, flexible seal. PU injection grouting is ideal for basements, tunnels, roofs, and retaining walls, providing long-lasting pr... https://shakuraconstruction.sg/services/pu-injection-grouting/