1. Assessment
A specialist reviews photos or visits the site to confirm the slab can be lifted and to identify drainage concerns.
2. Access holes
Small holes are drilled so pumping equipment can reach voids under the concrete without removing the whole slab.
3. Pumping and lifting
Slurry fills voids and applies upward pressure. Crews raise the slab gradually to avoid cracking.
4. Patch and finish
Holes are filled with compatible material and finished to blend. Joint sealing may be recommended to manage water.