(952) 818-7659 PolyTech offers the industry's leading technology for concrete lifting and concrete leveling projects. Our trained professionals treat your sunken concrete with high density, polyurethane foam injections and fill voids using our state-of-the-art geofoam fill. Lifting concrete with polyurethane foam, also known as polyjacking or foamjacking, is up to 50% cheaper than re-pouring concrete. It is a long-term repair, not a temporary fix like traditional slabjack methods such as mudjacking or sandjacking. PolyTech is the Twin Cities' leading geotechnical contractor for residential, commercial, industrial and municipal projects. Services include polyurethane concrete raising, soil stabilization solutions, void fill grouting, concrete culvert repair, concrete crack repair.