PU injection grouting is an effective waterproofing method used to stop active water leakage in concrete structures. This technique involves injecting polyurethane grout into cracks and joints, where it expands and seals internal voids. PU injection grouting is suitable for basements, roofs, tunnels, and retaining walls. By sealing leaks from within the structure, PU injection groutin... https://shakuraconstruction.sg/services/pu-injection-grouting/