YURU Polyurethane Injection Grouting Materials
Stop Water, Seal Cracks, Reinforce Structures - PU Grouting
Water leakage and concrete cracks are persistent challenges in underground and civil engineering.
YURU Waterproof offers a full series of Polyurethane Injection Grouting Materials that combine strong expansion, waterproof sealing, and long-term durability. Whether for tunnels, subways, dams, or basements, our PU grouts provide efficient leak-sealing and structural reinforcement.
YURU Waterproof offers two advanced series of PU grouting materials – Oil-based Hydrophobic and Water-based Hydrophilic – each designed for different environmental conditions and engineering demands.
Two Main Series of PU Grouting Materials
Oil-based Hydrophobic Polyurethane Grouting Materials
Engineered for severe leakage environments, this series reacts rapidly with water to form dense, closed-cell foam with exceptional waterproofing strength. It remains stable, non-shrinking, and pressure-resistant, even under continuous water exposure.
- Single-Component Standard Type: Ideal for general waterproofing and maintenance projects.
- Dual-Component Fast-Reaction Type: Specially developed for emergency leak sealing and rapid repair in high-pressure conditions such as tunnels, dams, and subway stations.
Its hydrophobic chemistry ensures minimum water absorption and maximum sealing efficiency, making it a reliable choice for critical waterproofing applications.
Water-based Hydrophilic Polyurethane Grouting Materials
Formulated for fine crack sealing, micro-leakage repair, and damp concrete injection, this series utilizes water as a reactive agent to create a flexible gel or foam that can penetrate deep into narrow voids.
It forms a permanent elastic waterproof layer that adapts to concrete movement, preventing future leaks.
- Single-Component Standard Type: Suitable for routine injection work in basements, foundations, and retaining walls.
- Foaming Type (including Fire-retardant Version): Provides rapid expansion, excellent elasticity, and enhanced safety for tunnels, subways, and public infrastructure projects where fire resistance is required.
Both systems are compatible with high-pressure grouting machines, ensuring efficient application, minimal downtime, and strong bonding performance with concrete and steel substrates.
Key Features & Advantages
Water-based Hydrophilic Polyurethane Grouting Materials
- Deep Penetration – Low viscosity allows it to fill micro-cracks effectively.
- Fire-retardant Version Available – Enhances safety in tunnels and public infrastructure.
- Flexible & Elastic Seal – Adapts to structural movement without cracking.
- Eco-friendly Formula – Non-toxic, solvent-free, safe for indoor and confined space use.
- Versatile Application – Suitable for concrete, masonry, and stone substrates.
Oil-based Hydrophobic Polyurethane Grouting Materials
- Instant Leak Sealing – Expands rapidly upon contact with water, forming dense waterproof foam.
- High Strength & Durability – Creates a tough, chemical-resistant waterproof barrier.
- Excellent Adhesion – Bonds firmly with concrete, masonry, and steel surfaces.
- Fast Curing (Dual-component type) – Perfect for emergency water-stop projects.
- Ideal for Wet Conditions – Performs even under water or high-pressure leakage.
Application Areas
Basements and Underground Parking
Long-term waterproofing protection.
Bridges and Roads
Reinforcing structures exposed to water pressure.
Tunnels and Subways
Sealing cracks and stopping active leaks.
Water Tanks and Reservoirs
Ensuring watertight integrity.
Industrial Facilities
Crack filling and waterproof reinforcement.
Dams
Waterproof reinforcement.
Why Choose YURU Waterproof?
20+ Years of Experience
Specialized in waterproofing and injection materials manufacturing.
Certified Quality
ISO 9001, ISO 14001, CE, and EPR certifications.
Factory price
Factory direct price for high volume buyers and wholesalers and contractors.
Engineering Support
On-site or remote technical guidance for project applications.
OEM/ODM
Custom packaging, labeling, and technical formulation.
Global Export Coverage
Serving clients across Europe, North America, the Middle East, and Southeast Asia.
What Our Clients Value?
“Excellent quality and strong packaging. The OEM service helped us expand our local brand quickly. We will continue our partnership with YURU Waterproof.”
— M. Rahman, Distributor, UAE Construction Supplies
This is exactly what we aim for: bridging the information gap between technical materials and real-world project needs. Whether you are buying for your own construction project or distributing to local contractors, we ensure you understand exactly what you’re selling—with no technical guesswork.
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