VPU-2 is a single-component hydrophobic polyurethane grouting material that reacts with water to expand into a durable foam with excellent waterproofing and reinforcement properties.

This oil-based grouting agent expands upon contact with water, forming a non-soluble foam that provides both waterproof sealing and structural reinforcement. Ideal for demanding construction and infrastructure applications.

• Superior hydrophobic properties with high chemical stability
• Large penetration radius and solidification volume ratio for deep crack filling
• Rapid reaction with water generates significant expansion pressure
• Excellent resistance to acids, alkalis, and organic solvents
• Smooth coating surface with wear resistance and anti-mildew properties
• Strong adhesion to concrete and other construction materials
• Customizable viscosity and curing speed for project-specific requirements

Widely used in subway tunnels, water conservancy projects, hydroelectric power facilities, basement parking structures, sewage treatment plants, and other critical infrastructure requiring reliable waterproofing and structural reinforcement.