Movement to a slab foundation generally occurs as a result of soil shrinking, expanding, compacting, consolidation or inadequate support

To the same extent the slab will move once raised, with bearing support not restored. This occurrence can be remedied by a process of soil-cement injections to the affected areas to ensure support and stability known as mudjacking or pressure grouting

Mudjacking employs a low pressure hydraulic process wherein a soil-cement grout is pumped into a series of 2" diameter holes. The process dictates that the grout will follow the path of least resistance and therefore fill any voids