PU injection grouting is an effective waterproofing method used to stop active leaks and seal cracks in concrete structures. This technique involves injecting polyurethane resin into cracks and joints, where it expands and forms a flexible, watertight seal. PU injection grouting is commonly applied in basements, tunnels, retaining walls, and roofs. With professional PU injection grout... https://shakuraconstruction.sg/services/pu-injection-grouting/