Permanent Leak Sealing with PU Injection Grouting: Stop active water leaks in concrete structures instantly. PU Injection Grouting utilizes a high-pressure polyurethane resin injection that reacts with water to form a permanent, flexible seal. Ideal for tunnels, basements, and retaining walls. This non-invasive method seals moving cracks effectively, ensuring long-term watertight inte... https://shakuraconstruction.sg/services/pu-injection-grouting/