Expert PU Injection Grouting services by Shakura Construction & Engineering Pte. Ltd. We use high-pressure polyurethane injections to repair cracks and water paths, ensuring a lasting waterproof fix. Contact us: Blk 942 #04-453, S(640942). Phone: +65 9647 2701. Email: [email protected]. https://shakuraconstruction.sg/services/pu-injection-grouting/