Why PU Injection Grouting Excels for Singapore Buildings In Singapore, frequent heavy rain causes persistent seepage through hairline cracks or construction joints. PU injection grouting provides a durable, non-destructive fix: low-viscosity resin penetrates deep into fissures, then reacts with moisture to create an expanding, watertight seal. Hydrophobic types resist high water pres... https://shakuraconstruction.sg/services/pu-injection-grouting/