Professional PU injection grouting is widely used to repair leaks caused by cracks and construction joints. The PU injection grouting process fills hidden gaps and seals water paths from within the structure. Once injected, the polyurethane material expands and cures, blocking water penetration permanently. PU injection grouting is suitable for both minor seepage and heavy water leaka... https://shakuraconstruction.sg/services/pu-injection-grouting/