PU injection grouting ensures long-lasting waterproofing by forming a permanent barrier inside the structure. Unlike surface coating, it seals internal cracks where leakage begins. Once injected, the polyurethane resin remains stable, flexible, and resistant to chemicals and temperature changes. This durability makes it one of the most effective waterproofing technologies for Singapor... https://shakuraconstruction.sg/services/pu-injection-grouting/