Why Choose PU Injection Grouting for Basements? Basement walls are constantly under hydrostatic pressure from groundwater, making them prone to weeping cracks. PU injection grouting is uniquely suited for these "negative side" repairs where you cannot access the exterior of the wall. The expanding foam travels through the entire thickness of the concrete, sealing the exit and entry p... https://shakuraconstruction.sg/services/pu-injection-grouting/