PU Injection Grouting for Swimming Pool and Tank Leak Repair: Leaking concrete pools, reservoirs, and water tanks require specialized repair. Our potable-water-safe PU Injection Grouting seals leaks from the inside without draining the structure completely in some cases. A highly effective, low-disruption method for maintaining water containment integrity. Protect your water resources... https://shakuraconstruction.sg/services/pu-injection-grouting/