PURSEAL is a water reactive grout specifically designed for injection into leaking concrete, masonry or brickwork, to stop the flow of water. Commencement of the chemical reaction with water can be adjusted by the addition of a variable quantity of PURCAT R1. By restraining the natural expansion created by this reaction a strong closed-cell semi-rigid foam is formed, providing a permanent barrier to the ingress of water.
PURSEAL is a low viscosity MDI-based isocyanate which transforms into a semi-rigid polyurethane foam when in contact with water. The reaction time is adjusted by the addition of PURCAT R1 catalyst.
- Penetrates into cracks Provides a totally water-resistant barrier.
- Non-toxic. Can be used in contact with potable water.
- Unaffected by salts and contaminants in water.
- Resistant to biological attack.
- Excellent bond strength.
- Solvent free.