After holes are drilled in the settled section of highway, polyurethane foam is injected under the slab. The foam expands to fill voids and raise the settled highway section. 15 seconds to expand, 15 minutes to cure. This job took 50 minutes start to finish, and used 205 lbs. of HMI polyurethane concrete raising material.
What a Fox Valley Winter Does to Your Driveway and Garage Floor
Wisconsin winters can be tough on concrete. That’s one reason the state requires many home footings to extend at least
November 6, 2026
