The Process

There are three primary steps to the process:

STEP 1:
A hole (or series of holes) is drilled through the surface of the affected area. 

STEP 2:
A limestone slurry (grout like) material is pumped into each hole through a pressure nozzle.  This material fills the void below the concrete slab, creating hydraulic pressure, which forces the slab upward.

STEP 3:
The slab surface is cleaned and the holes are filled, providing immediate use in most cases.

Raising and leveling concrete is a hydraulic pressure process system used nationwide, as an alternative to removing and replacing existing sunken concrete.