One of the problems is that grinding leaves unsightly marks on the finished surface, which some people don't necessarily mind. But for those that have decorative finishes on driveways and pool decking, this is a serious concern that they should know about ahead of time.
By injecting structural grade polyurethane material below the slab and lifting the slab back toward original position, you've now pushed down (or compacted) the compromised soil, void filled where soil has been eroded out, and lifted the slab back up. From the top, the sidewalk looks like it did years ago, the colors all match and the slabs are fully supported.
To find out more about lifting and supporting settled concrete slabs, contact us today 770-558-5862 or email firstname.lastname@example.org