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Concrete Lifting and Leveling - PolyLevel
PolyLevel is injected underneath the slab though tiny holes. This allows the polyurethane foam to get directly underneath the slab and expand, lifting the slab up to the desired height. PolyLevel cures in about 15 minutes, allowing the area to be back in use within a short period of time. After it cures, the holes are covered back up with concrete to blend in with the rest of the slab.