For reliable waterproofing, PU Injection Grouting – Shakura Construction & Engineering delivers durable crack sealing solutions using high-grade polyurethane. Ideal for residential, commercial, and industrial structures. Shakura Construction & Engineering Pte. Ltd., Blk 942 #04-453 Jurong West St. 91 Singapore 640942. Call +65 9647 2701 or email [email protected] . https://shakuraconstruction.sg/services/pu-injection-grouting/