Trust Shakura Construction & Engineering Pte. Ltd. for permanent leak repairs using high-quality PU Injection Grouting. We seal hairline cracks and ensure your building is dry. Email us: [email protected]. Blk 942 #04-453 Jurong West St. 91. Phone: +65 9647 2701. https://shakuraconstruction.sg/services/pu-injection-grouting/