Frequently Asked Questions
If you’re dealing with sinking, cracked, or uneven concrete around your home or property, you might be wondering:
- Can this be repaired without replacing the concrete?
- How much does concrete leveling cost?
- How long does the process take?
- Will the repair hold up over time?
- What causes concrete to sink in the first place?
Below, you’ll find simple, straightforward answers about how concrete lifting works, what types of problems we can fix, how pricing is typically handled, and what you can expect from start to finish.
Don’t see your answer here? Our team is always happy to chat.
How Concrete Lifting Works
Concrete leveling lifts sunken slabs by injecting material beneath the surface. Our team drills small access holes, injects expanding polyurethane foam, and lifts the slab back into place. You can learn more about each step on our concrete leveling process page.
Most concrete lifting jobs are completed in just a few hours, depending on the size of the area and how much settling has occurred. Smaller residential projects—like driveways, sidewalks, or patios—can often be finished the same day. Larger commercial jobs may take longer, but the process is still much faster than removing and replacing concrete.
With polyurethane concrete leveling, the surface is ready to use the same day in most cases. The poly foam expands and cures quickly, allowing you to walk or drive on the concrete shortly after the repair is completed. At STL Polyjack, our process is designed to be fast and low-disruption, so you’re not waiting days like you would with replacement.
The drill holes are small and patched after the repair, so they’re usually not very noticeable—especially from a normal standing distance. At STL Polyjack, we take care to keep repairs clean and as low-visibility as possible. Most customers are surprised at how subtle the finished result looks, especially compared to the cost and disruption of full replacement. 
What We Lift & Repair
We lift a wide range of surfaces including driveways, walkways and sidewalks, garage floors, and patios.
At STL Polyjack, we’ve completed over 2500 concrete lifting jobs, so we’ve seen just about every type of sinking or settling issue. Our polyurethane process works on both residential and commercial properties, restoring uneven concrete quickly and safely
Yes. We regularly lift and level pool decks to remove trip hazards and improve drainage.
Yes. We work on commercial properties including parking lots, warehouse floors, and other large slab areas.
With over 2500 projects completed and more than a decade in business, our team understands how to work in active environments and keep disruptions to a minimum. Using polyurethane foam injection, we lift and stabilize concrete quickly—often without shutting down operations—so your business can keep running.
Yes. If there are empty spaces beneath the slab, we use void filling to restore support and prevent further settling.
Yes. In addition to lifting, we offer concrete crack repair and concrete caulking to help extend the life of your concrete.
Pricing, Estimates & Warranty
The cost depends on the size of the area, how much the slab has settled, and how much material is needed. In many cases, concrete lifting is about half the cost of full replacement.
Yes. We provide clear, no-pressure estimates so you can understand your options before moving forward.
Pricing is based on factors like slab size, depth of voids, and site conditions. Every project is slightly different, which is why we evaluate each job individually.
Yes. Saint Louis Polyjack provides a 5-year warranty on concrete leveling, giving you confidence in the repair.
No. We provide upfront pricing so you know exactly what to expect before any work begins.
Concrete Leveling vs. Replacement
In many cases, yes—concrete leveling is a better option than replacement. If the concrete is still structurally sound, leveling allows us to fix the real problem underneath by filling voids, stabilizing the soil, and lifting the slab back into place. This avoids the time, cost, and mess of tearing everything out and pouring new concrete.
At STL Polyjack, we’ve completed over 2500 lifts over the past decade, and most customers choose leveling because it’s faster, cleaner, and more cost-effective. Repairs are often done in just a few hours and ready for use the same day, while saving up to 50% compared to replacement. It’s a smart, long-term solution for both residential and commercial concrete.
If the slab is severely cracked, broken apart, or structurally damaged, replacement may be the better option. We’ll always recommend the best solution based on your situation.
Concrete leveling is typically much more affordable than full replacement. Instead of tearing out and repouring the slab, we lift and stabilize the existing concrete from underneath—cutting out demolition, hauling, and material costs. In most cases, this allows you to save up to 50% compared to replacement while still fixing the root cause of the problem.
Yes. The process fills voids and stabilizes the soil beneath the slab. In some cases, additional soil stabilization may be recommended.
Concrete leveling is designed to be a long-lasting solution, not a temporary fix. By filling voids and stabilizing the soil beneath the slab, polyurethane foam helps prevent future settling and keeps the concrete supported over time. In many cases, properly lifted concrete can last for years—especially when underlying drainage or soil issues are addressed.
What to Expect on Project Day
Our team will review the project with you, mark the areas to be lifted, and prepare the surface before starting the repair.
No. The process is clean and controlled. We use small drill holes and avoid heavy demolition, which keeps disruption to a minimum.
And don't worry - as for our equipment, we don't park heavy equipment on your lawn. Instead we run long hoses where needed so we keep your property looking great while we work.
No. Most projects can be completed while you remain on-site.
Most projects are completed in a few hours, depending on the size and complexity of the repair. You can use your concrete immediately!
We patch the holes, clean the area, and walk you through the finished result. Most surfaces are ready to use shortly after.
Why Property Owners Choose Saint Louis Polyjack
STL Polyjack is a trusted local team with over a decade of experience and more than 2500 successful concrete lifting projects completed. We focus on fixing the real cause of sinking concrete by stabilizing the soil beneath your slab—not just leveling the surface. Our polyurethane process is fast, clean, and precise, with most jobs completed in just a few hours and ready for same-day use.
Customers choose STL Polyjack because we keep things simple and reliable—clear communication, clean job sites, and long-lasting results. You’ll also save up to 50% compared to full concrete replacement, making it a smarter, more cost-effective solution for both homes and commercial properties.
Yes. We handle everything from residential slabs to large commercial surfaces, including warehouse floors and factory floors.
Yes. In addition to lifting, we provide services like concrete sealing and foundation repair when needed.
Absolutely. Our goal is to give you the best solution for your situation, even if that means recommending a different approach.
You can contact our team through our contact page to schedule an estimate and get clear answers about your project. Or call us today at: 314-488-2993
Areas We Serve
STL Polyjack proudly serves homeowners, businesses, and property managers across the St. Charles and St. Louis area. With over a decade of experience, we provide polyurethane concrete leveling, lifting, and structural repair solutions that restore sinking concrete without the cost of replacement. From driveways and sidewalks to warehouse floors and parking lots, we keep properties safe, level, and stable.
Serving St. Louis & Surrounding Communities
- St. Charles, MO
- St. Louis, MO
- Sunset Hills, MO
- Fenton, MO
- Kirkwood, MO
- Webster Groves, MO
- Ballwin, MO
- Chesterfield, MO
- Crestwood, MO
- Arnold, MO
- Manchester, MO
- Des Peres, MO
- Ellisville, MO
- Town and Country, MO
- Oakville, MO
- Affton, MO
- Clayton, MO
- Maryland Heights, MO
- Bridgeton, MO
- Florissant, MO
- University City, MO
If you have sinking or uneven concrete around your property, we can evaluate the issue and recommend the best solution.
We offer free estimates, and you can even send photos for a fast quote.
Get Your Free Concrete Leveling Estimate
314-488-2993
Request Your Free Quote
About Saint Louis Polyjack
Saint Louis Polyjack specializes in polyurethane concrete leveling, lifting, and structural repair throughout St. Louis, MO and surrounding communities. We raise and stabilize sinking driveways, sidewalks, patios, pool decks, warehouse floors, and more using advanced poly foam technology.
Our process is fast, clean, and long-lasting — backed by a 5-year warranty.
Office Location : 12951 Gravois Rd. Ste. 100 St. Louis, MO 63127
Uneven Concrete? Don’t Replace It — Lift It.
Get a Free Estimate Today.
Serving St. Charles, St. Louis, Sunset Hills, Fenton, Kirkwood, Webster Groves, Ballwin, Chesterfield, Crestwood & Arnold.
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