Professional PU injection grouting is widely used for concrete crack repair and leak sealing in wet areas. By injecting high-quality PU resin under pressure, this method fills voids and permanently seals water ingress points. PU injection grouting is commonly applied to tunnels, basements, retaining walls, and roofs. This technique improves water resistance, strengthens concrete struc... https://shakuraconstruction.sg/services/pu-injection-grouting/