Our polyurethane foam method uses the concrete slab itself as a means of delivering poly foams that raise concrete, fill voids, and stabilize soils. A ⅝” hole is drilled through the slab into the subgrade. A tapered delivery port is installed into the ⅝” hole. The injection gun is connected to the port. The injection gun delivers the polyurethane material through the port and slab. Expansion of the material occurs within seconds, compressing loose soils and raising concrete.
Raising concrete with polyurethane foam is done with incremental injections. Lifting foam will fully expand within 10-15 seconds allowing us to monitor the raising and preventing over raising the slab. By using an air-purged gun to deliver foam under the slab we have complete control over the process. This equipment will keep the injection port open between injections, allowing the foam to fully expand before injecting more foam material.
When compared to concrete replacement, the process of raising concrete with polyurethane foam is inexpensive. It is also exponentially faster than replacing concrete. Repaired areas are ready within minutes to be utilized, as they were intended. Polyurethane’s ease of material process and clean-up are some distinct advantages over traditional concrete repair.
Click the link below and fill out the form and someone will contact you to discuss the details of your project.