PU injection grouting is a leading no-hacking waterproofing solution in Singapore for stopping active water leaks fast. Polyurethane grout is injected under pressure into cracks, joints, or porous concrete, expanding on contact with water to form a flexible, watertight seal. Ideal for ceiling leaks, bathroom seepage, balcony cracks, wall dampness, and HDB/condo repairs. Benefits: mini... https://shakuraconstruction.sg/services/pu-injection-grouting/