Concrete lifting with mud is known as mudjacking or concrete leveling. In this method, sand, cement, and other materials are combined to create a mixture called slurry. This mixture is then pumped into the holes drilled into the concrete to raise and level it. Mudjacking works best for concrete that’s in good condition but is no longer level. It is the best option for slabs, driveways, walkways, steps, and more. In contrast, concrete lifting with foam or polyjacking uses a high-density geo-technical expanding foam to raise and stabilize concrete slabs. The material and equipment used in polyjacking are similar to what is used in spray foam insulation. The only difference is the foam used for concrete lifting is a lot stronger.  Polyjacking works best for large, heavy, or sensitive concrete slabs. It is also the best choice for concrete that needs to return the service quickly such as roadways.