PU injection grouting is a highly effective, non-hacking waterproofing technique that stops active water leaks in concrete structures. Expanding polyurethane resin is injected under pressure into cracks, joints, voids, or honeycombs, where it reacts with moisture to foam and seal tightly. Ideal for ceilings, walls, basements, bathrooms, and slabs in Singapore's humid climate, this met... https://shakuraconstruction.sg/services/pu-injection-grouting/