Polyurethane is the process of injecting expanding polyurethane grout into voided areas, inside structures or under slabs-on-grade in order to fill voids or relevel slabs. Polyurethane grouting is a fast,efficient repair process for improving settled and unstable concrete.From sidewalks to interstates, and everything in between.
How Polyurethane Grouting Works
Two polyurethane liquid components are mixed and injected (also known as polyurethane injection) under pressure below the area or structure being repaired. The two liquids respond with each other, expand and harden, like the foam you get in a can to seal around windows.Our polyurethane grouts stay a liquid for a few seconds before expanding. This helps them spread out from the exact spot they’re injected, but then get harder much faster, and can exert much more force during expansion. The grouts we use are specially formed to be very strong and long-lasting in contact with the ground.
Common uses of Polyurethane Grouting
Create barriers to water flow
Seal crack and joints