Injection
CCH InjectPU 90
A low-viscosity hydrophobic polyurethane resin that reacts on contact with water to foam and expand, sealing active leaks through cracks, construction joints and pipe penetrations.
Technical Specifications
Base
Hydrophobic polyurethane
Viscosity
Low (~250 mPa·s)
Reaction time
Starts within seconds of water contact
Expansion ratio
Up to 20x original volume
Application
Injection pump, packer ports
Packaging
Cartridge or pump-grade drum
Features
- Reacts with water on contact — works even in actively leaking cracks
- Low viscosity for deep penetration into fine cracks
- Cures to a flexible, watertight seal
- Can be re-injected if a crack reopens later
Benefits
- Stops active water ingress fast, even underwater
- Flexible cured product accommodates minor structural movement
- No need to dry out the substrate before injecting
- Minimal disruption — injected through small ports, no major breakout
Application Areas
Crack injection
Construction & cold joints
Pipe penetrations
Lift pits & basements with active leaks
Water tank joints
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