Redwop PU Injection Grout is a high-performance polyurethane-based injection system formulated for rapid penetration and expansion within cracks, voids, and soil cavities. It combines low-viscosity resin with a specialized activator, allowing the material to flow deeply into hairline fissures before reacting with moisture to create a resilient, closed-cell foam. This foam expands 10–20× in volume, creating an impermeable barrier that halts active water leaks and stabilizes settled structures in as little as a few minutes.

Ideal for structural repair and waterproofing, Redwop PU Injection Grout is perfect for sealing leaks in concrete slabs, basement walls, tunnels, and bridge decks. As the foam cures, it expands to fill voids and reinforce substrates, improving load-bearing capacity while resisting harsh chemicals, acids, and salts found in underground or industrial environments . Its lightweight, hydrophobic properties make it ideal for sensitive or remote applications, offering minimal excavation, fast turnaround, and long-lasting performance.