Ports are inserted into the sidewalk to inject the foam.
Uneven sidewalks can be dangerous poly-level is a great safety fix.
Finished driveway after poly-level lifting.
Sidewalk after the poly-level is complete.
Full view of the finished driveway.
During the process of lifting and leveling.
After the slab under the steps has been lifted and leveled.
The ports before the foam is injected.
Project Info

Homeowner David has lived in his home since 2006 where he slowly noticed that his driveways and sidewalk have slowly statred to sink and crack. Sinking slabs and driveways can be very dangerous. The cause of sinking slabs and driveways can lead to other foundation issues.  A port is inserted into the slab where the Poly foam is injected. The foam then expands making the slab rise.