I live on a acreage just outside Bonnyville Alberta. My house is aprox 9years old.
My driveway had settled aprox 4” so there was a significant rise entering the garage, plus my sidewalk along one side of the garage had tipped away from the garage aprox 3” the only thing holding it up was the rebar dowels into the garage footing. I also suspected that the front patio was hollow underneath and all that was holding it up was also the dowels into the house basement wall.
I contacted poly level and they asked for pictures and measurements, once I provided what they asked they quoted me a price to get everything back in place and fill the voids underneath the concrete.
The crew showed up two young fellows named Quinton “Q” and Josh at aprox 10:30 AM. And set up there equipment. They drilled 3/8” holes in various locations throughout the driveway entering the garage. On the side walk they installed mechanical lifting jacks and drilled holes along the length of the sidewalk. They drilled several holes in the patio as well.
They then started injecting the foam material into the driveway and the driveway started lifting rather quickly to my surprise. They repeated the same injection procedure on the sidewalk and front patio making sure everything was back to original construction.
They repaired several cracks in the concrete that had occurred during the settling. Plus they grouted in all the holes they drilled.
The two boys “Q” and Josh did a heck of a job lifting everything back in place and did a great job cleaning up before they left. They were gone by Aprox 2:00PM.
The quoted price was about half of what it would of cost to replace the concrete and if I went that way who knows if in a few years it would not settle again.
I can not say if this will not settle over the next few years only time will tell. But there is a three year warranty if anything does settle within that time frame.
... I can't say enough good things about them...