When a driveway, sidewalk, garage floor, patio, or other concrete slab has settled but remains suitable for lifting, structural polyurethane foam may be introduced beneath the concrete to fill accessible voids and carefully improve its elevation without removing an otherwise usable slab.
Whether that applies to a specific slab depends on the condition of the concrete, what is happening beneath it, and how the area is used — which is what an evaluation is for.
We received your request. We'll follow up at {{ formValues.phone }} to learn more about your project and discuss next steps.
Most people arrive here because something looks wrong, not because they know what caused it. Find the closest description below and it will point you to the page that covers that slab in detail.
A driveway slab sits lower than the garage transition or an adjacent section.
Settlement may have changed the elevation relationship between the driveway and the garage entrance. How much of that difference can reasonably be improved depends on joints, cracking, and adjacent concrete.
02An elevation change appears between neighboring sidewalk slabs.
The lower slab may be a candidate for lifting depending on slab condition and the surrounding route.
03The garage floor has changed elevation relative to walls, door transitions, joints, or adjacent slabs.
A garage-floor slab can settle independently of the building foundation. Concrete slab lifting is not foundation repair.
04A patio slab has changed elevation near a door, step, foundation edge, or adjacent slab.
Lifting may improve the slab elevation where appropriate, but drainage and other water conditions remain separate considerations.
05Deck concrete has settled relative to coping or neighboring deck sections.
Pool-deck lifting requires consideration of fixed pool components and known site conditions, which is why it is planned rather than assumed.
06Settlement affects commercial or shared-use slabs.
Commercial applications may involve pedestrian, equipment, access, loading, or operating considerations that shape the approach.
On garage floors specifically: a garage-floor slab can settle independently of the building foundation. Concrete slab lifting is not foundation repair, and slab appearance alone cannot establish what the building is doing.
Short summaries. Each service page covers the evaluation, the limits, and the cost factors for that kind of slab.
For driveway slabs and panels that have settled, including at the garage transition. The service page covers what affects how much elevation can reasonably be improved.
For uneven joints and elevation changes along walks, entries, and public-facing routes. Slab condition and the surrounding route both factor into whether lifting fits.
For garage slabs that have changed elevation relative to walls, thresholds, or adjacent concrete. The page explains why this is a flatwork question, not foundation repair.
For settled patio and pool-deck slabs where conditions allow. Fixed components, adjacent surfaces, and drainage are all part of that evaluation.
For business, HOA, multifamily, and shared-use slabs. Access, pedestrian routes, loading, and operating conditions change how a project is planned.
These conditions can indicate slab movement, but they do not by themselves identify the cause or establish that lifting is the appropriate repair.
{{ sign.body }}
Concrete settles when the material supporting it changes. Several conditions can contribute, often together, and an uneven slab does not reveal the underlying cause by itself.
Which factors apply to a particular slab in Belvidere is something to determine on site rather than assume from the address. That is deliberate: naming a cause before looking at the property would be guessing.
{{ cause.body }}
Not every uneven slab should be lifted. Lifting addresses elevation and support. It does not restore badly deteriorated concrete, and it is not the answer to every kind of movement.
{{ item.body }}
{{ item.body }}
An evaluation should determine whether slab lifting, replacement, or another type of repair is the better fit for the conditions present. Nothing on this page can decide that for a specific slab.
Driveways, sidewalks, patios, and many garage-floor slabs are concrete flatwork. They can move independently of the building foundation, so a change in slab elevation does not automatically mean the foundation has moved.
The reverse also matters. Polyurethane slab lifting should not be presented as a repair for a moving building foundation, and this page cannot tell you whether structural movement is involved at your property. If there is reason to suspect the building itself, that is a question for a structural evaluation rather than a slab-lifting quote.
Garage slabs sit at the boundary of these two questions more often than any other flatwork, which is why garage floor lifting is covered separately and in more detail.
Slab lifting addresses the elevation and support of flatwork. Foundation work is a different scope, a different evaluation, and in many cases a different trade.
Three steps, kept short here. The service pages carry the detail for each kind of slab.
Visible slab condition, elevation, adjacent surfaces, access, and other relevant site conditions are evaluated on site, and you get a written estimate for what was found.
Relatively small injection openings allow structural polyurethane foam to be introduced beneath suitable concrete. The material can fill accessible voids and develop controlled lifting force.
Movement is monitored, injection points are patched, and return-to-use instructions specific to the project are provided rather than a generic timeline.
No square-foot price is published here, because the number would be wrong for most projects. What drives cost is how much slab is affected and how complicated the lift is.
{{ factor.body }}
An on-site evaluation is needed to determine whether lifting is appropriate and what the project will cost.
Request a Free EstimateSeven things worth noting before you get in touch. None of them require measuring anything — they are what an evaluation will ask about first.
{{ prep.body }}
Providing these details with your estimate request can help clarify what needs to be evaluated.
Belvidere is the Boone County seat and sits east of Rockford, which is the market this page covers. Project availability depends on the property location and service needs, so submit the property ZIP code with your estimate request and availability can be confirmed for that address.
Concrete leveling across the wider metro is covered on the Rockford concrete leveling page.
{{ faq.a }}
Settlement rarely stops at one slab. These cover the rest of the picture.
Driveways, sidewalks, garage floors, patios and pool decks, and commercial slabs side by side.
Where pedestrian routes, access, loading, and operating conditions change how the work is planned.
What happens during a site visit, and what is deliberately not promised before one.
Tell us what moved, where the elevation change is most noticeable, and how the area is used. The next step is determining whether the concrete may be suitable for lifting or whether another repair should be considered.