High-pressure PU injection grouting is a proven solution for structural waterproofing and stabilization. Liquid polyurethane is pumped under controlled pressure into voids, cracks, or soil behind concrete, where it reacts, expands, and hardens into a lightweight yet tough foam. Perfect for slab jacking to re-level sunken floors, soil stabilization, and emergency leak stops in foundati... https://shakuraconstruction.sg/pu-injection-grouting-singapore/