Question
What is Polyurethane (PU) resin injection?
Expert Answer
Polyurethane (PU) resin injection is the primary method for stopping water leaks in concrete. PU resins are hydrophobic and react with water. When injected into a leaking crack, the resin meets the water, expands rapidly into a foam (increasing up to 30x in volume), and cures to form a flexible, watertight seal. It is ideal for stopping gushing leaks in basements, tunnels, and manholes because it uses the water itself to catalyze the sealing process.
Related Questions
What are injection packers?
Materials
Crack Repair
How does hydrophobic resin differ from hydrophilic?
Materials
Crack Repair
What is 'pot life' in resin injection?
Materials
Crack Repair
Can you repair concrete cracks without rebuilding?
Concrete Repair
Materials
Why do you need a sump and pump system?
Waterproofing
Materials
