Howell SlabJacking offers mud jacking, concrete raising, lifting of sunken driveways, porches and patios and basement wall straightening. A series of small holes are drilled in the slab through which a grout and cement mix is pumped beneath the concrete slab. Then the slab is lifted and the holes are filled and patched with new cement for repairing sunken concrete at a small fraction of the cost that it would have been to replace the concrete.