Carleen from Saint Johns, FL contacted Sunshine Foundation Repair because she was having problems with her concrete slab. The company came out and did a free estimate. They explained to Carleen that the problem was caused by the soil underneath the slab shifting. This caused the slab to settle and crack. The company used PolyLevel to solve the problem. PolyLevel is a high-density polyurethane that is injected under the slab. The polyurethane fills the voids in the soil and lifts the slab back into place.