PU injection grouting stands out in Singapore for its effectiveness against humidity-driven leaks, outperforming traditional methods in speed and minimal invasion. The process: identify cracks via inspection, drill ports, install packers, and pump PU foam that reacts with moisture to expand and seal. Suited for active leaks in concrete structures like HDB ceilings or condo external wa... https://shakuraconstruction.sg/services/pu-injection-grouting/