Lift Sunken Concrete — Without Replacing It
Sunken driveway? Uneven sidewalk? Settled patio? We lift concrete back to level in just a few hours — no tear-out, no mess, and you can use it the same day.
Why Is Your Concrete Sinking?
You've been stepping over it for months. That dip in the driveway where it meets the garage. The sidewalk panel that's tilted just enough to catch toes. The patio that slopes the wrong way and puddles every time it rains. It's not an emergency — but it looks bad, it's getting worse, and you think about it every single day.
The soil beneath your concrete slab washed out or compacted over time. Kansas City's heavy clay soil shrinks during dry spells, creating voids under flatwork. Rain washes loose fill out from beneath slabs. Once the support is gone, gravity wins — the concrete settles into the gap.
Polyjacking offers a faster, more affordable alternative to concrete replacement. Polyjacking injects expanding polyurethane foam through penny-sized holes to fill the void, compact the soil, and lift the slab back to level. The process takes a few hours, costs a fraction of replacement, and you can walk or drive on the surface the same day.
JLB lifts driveways, sidewalks, patios, pool decks, garage floors, and porches across the Kansas City metro. No jackhammers. No week-long cure time. Just level concrete — fast, clean, and done right.
Why Do Homeowners Choose Polyjacking Over Replacement?
Polyjacking is the modern way to fix sunken concrete — faster, cleaner, and more affordable than replacement. Here's why homeowners love it:
What Are the Warning Signs You Need Polyjacking & Concrete Leveling?
These are the telltale signs that your concrete has settled and needs leveling.
Driveway Sunken Near the Garage
That lip where the driveway meets the garage? You feel it every time you pull in. It catches wheels, scrapes bumpers, and looks worse every season.
Sidewalk Sections Tilted or Uneven
Guests trip on it. You step over it out of habit. It looks bad and you know it — and so does everyone who walks up to your front door.
Patio Sloping the Wrong Way
Your patio furniture wobbles. Drinks slide. Rain puddles where you sit instead of draining away. It's annoying every single time you use it.
Pool Deck or Porch Sinking
A settling porch or pool deck looks neglected. The gaps between slabs catch toes and collect dirt. It makes the whole backyard look rough.
Water Puddles That Won't Drain
Standing water on your driveway or patio after every rain. It sits there for days, grows algae, and makes your concrete look stained and sloppy.
Visible Gaps Under Slab Edges
You can see daylight under the edges. The concrete is floating over a void, it looks uneven, and it's only going to settle more.
How Does Polyjacking Work?
Driveway & Garage Leveling
This is what we do most. That sunken slab by the garage, the dip in the middle of the driveway, the lip you scrape on every day — we lift it all back to level in a few hours. Drive on it tonight.
Sidewalk Leveling
No more tripping. No more embarrassment when guests walk up. We level tilted sidewalk sections so they look clean and even — the way they did when they were new.
Patio & Pool Deck Leveling
Your patio should be a place to relax, not a wobbling obstacle course. We lift settled patios and pool decks back to level so your outdoor space looks and feels right.
How Polyjacking Works
Penny-sized holes. Expanding polyurethane foam. Precision lift. The foam fills the void under the slab, compacts loose soil, and raises the concrete to level. It cures in 15 minutes, it's waterproof, and it won't wash out.
Why It Beats Replacement
Replacement means tear-out, hauling, grading, pouring, and waiting a week to use your driveway. Polyjacking means a few hours and you're done. It costs 50-70% less and the results last just as long.
How Does the Polyjacking Process Work?
How Polyjacking Works
Four Steps to Level Concrete
Most polyjacking jobs are done in a few hours. Here's the process from start to "walk on it today."
Free Assessment
We measure the settlement, identify void locations, and give you an exact quote. No pressure, no upsells — just an honest assessment of what needs leveling.
Small Holes, Big Results
We drill penny-sized holes through the slab at strategic points. These are the injection ports — and they're nearly invisible when we're done.
Foam Injection & Lift
High-density polyurethane foam is injected through the ports. It expands beneath the slab, fills the void, and lifts the concrete back to level with millimeter precision.
Patch, Cure, Walk
Holes are patched, foam cures in 15 minutes, and you can walk and drive on the slab the same day. Done.
What Do Homeowners Say About JLB?
"Our driveway had this ugly dip right where you pull into the garage. It drove me crazy for two years. JLB came out, lifted the whole thing in about 3 hours, and you honestly can't tell it was ever sunk. Should've called way sooner."
"I was so embarrassed by our sidewalk — guests would literally trip on it. JLB leveled all four sections in one afternoon. My wife said it's like we got a new front yard. Best money we've spent on the house."
"Our driveway looked terrible. Sunken on one side, cracked, and the neighbors had definitely noticed. JLB polyjacked it in a couple hours and now it looks like fresh concrete. The price was half of what I expected."
"Our driveway sank over the winter and every time I pulled in I cringed. JLB lifted the whole thing in an afternoon and it looks perfect. My neighbor asked if we got a new driveway poured — nope, just polyjacked."
"I was getting quotes to tear out and replace my driveway — $8,000+. JLB polyjacked it for a fraction of that and it looks just as good. Can't believe I almost spent all that money. Driveway looks great now."
"The sunken slab by our garage was driving me nuts. Every time it rained, water pooled right there. JLB fixed it in a few hours — level, clean, done. Should've done it years ago instead of staring at it."
What Does Polyjacking Cost in Kansas City?
Polyjacking costs a fraction of concrete replacement. Here are typical Kansas City metro prices so you know what to expect before your free assessment.
| Project Type | Typical Cost Range | Notes |
|---|---|---|
| Sidewalk section (1–2 slabs) | $300–$800 | Most affordable concrete leveling project |
| Driveway leveling | $800–$2,500 | Depends on number of injection points |
| Patio leveling | $500–$1,500 | Depends on size and number of voids |
| Garage floor leveling | $600–$2,000 | Often combined with driveway work |
| Pool deck leveling | $1,000–$3,000 | Requires precision for drainage slope |
| Per-hole injection point | $150–$350 | Most projects need 4–12 injection points |
These ranges reflect typical Kansas City metro pricing as of 2026. Actual costs vary based on the area being lifted, number of injection points, and accessibility. JLB provides free assessments — call (816) 408-3651 for an accurate quote.
Polyjacking & Concrete Leveling FAQ
Most residential polyjacking projects range from $500 to $3,000 depending on the area being leveled and the number of injection points. That's typically 50-70% less than tearing out and replacing the concrete.
Most jobs are done in just a few hours. The polyurethane foam cures in about 15 minutes, so you can walk and drive on the surface the same day.
Yes. Polyurethane foam is lighter (won't add load to weak soil), stronger, waterproof, and fills voids more completely than mudjacking slurry. The injection holes are also much smaller — penny-sized vs. golf-ball-sized.
Driveways are our most common polyjacking project. If the concrete itself isn't badly cracked or broken into pieces, we can lift it back to level. We'll tell you honestly during the free assessment if polyjacking is right or if replacement makes more sense.
Polyurethane foam is permanent. It doesn't wash out, erode, or break down over time. The foam is also waterproof, so it won't be affected by moisture in the soil beneath the slab.
Yes. We offer flexible financing options to make polyjacking affordable. Ask about payment plans during your free assessment.
Common Questions About Polyjacking in Kansas City
How much does polyjacking cost in Kansas City?
Polyjacking in Kansas City typically costs $300–$800 for a sidewalk section, $800–$2,500 for a driveway, $500–$1,500 for a patio, and $600–$2,000 for a garage floor. That's 50–70% less than tearing out and replacing the concrete. Most projects need 4–12 injection points at $150–$350 each. Call (816) 408-3651 for a free assessment with exact pricing.
How long does polyjacking last?
Polyjacking is permanent. Polyurethane foam doesn't wash out, erode, compress, or break down over time — unlike mudjacking slurry, which can erode within 3–5 years. The foam is also waterproof and unaffected by Kansas City's moisture cycles. The only scenario where re-leveling may be needed is if the underlying soil condition (such as poor drainage causing ongoing erosion) creates new voids adjacent to the original repair.
Is polyjacking better than mudjacking?
Yes, polyjacking is superior to mudjacking in every measurable way. Polyurethane foam is 75% lighter (won't overload weak soil), waterproof (won't wash out), and cures in 15 minutes (vs. 24–48 hours for mudjacking). The injection holes are penny-sized (vs. golf-ball-sized for mudjacking). Foam fills voids more completely and provides a more precise lift. The only advantage mudjacking has is a lower upfront cost — but the shorter lifespan makes it more expensive long-term.
Can you polyjack in cold weather?
Yes. Polyurethane foam is a chemical reaction, not a water-based product, so it cures regardless of temperature. Polyjacking can be performed year-round in Kansas City. However, extremely cold weather (below 20°F) can make the concrete surface brittle, so we take extra precautions with injection pressure. The foam itself expands and cures normally in any weather conditions.
Does polyjacking fix the root cause of sinking concrete?
Polyjacking addresses the immediate problem — it fills the void beneath the slab and lifts the concrete back to level. It also compacts the surrounding soil, which helps prevent new voids from forming in the same location. However, if the root cause is poor drainage washing soil away, that drainage problem should also be addressed. During the free assessment, we evaluate whether drainage corrections are needed alongside the leveling work.
How long before you can drive/walk on polyjacked concrete?
You can walk on polyjacked concrete immediately after the work is done. You can drive on it within 30 minutes. The polyurethane foam reaches 90% of its final strength within 15 minutes of injection. Compare that to mudjacking (24–48 hours before use) or concrete replacement (7 days before driving). Same-day use is one of polyjacking's biggest advantages for busy households.
Ready to Level Your Concrete? Start Here.
A quick assessment tells you exactly what needs leveling and what it'll cost. No obligation. No pressure. Most driveways are done the same day.
Get Your Free Assessment
Takes 30 seconds. We'll call within 24 hours.
Thank You!
We received your request. A concrete leveling specialist will contact you within 24 hours to schedule your free assessment.
Where Does JLB Provide Polyjacking & Concrete Leveling?
Kansas City Metro
Kansas City Metro Offices
Three locations serving the entire KC metro. We come to you.
JLB Foundation Repair & Basement Waterproofing — Kansas City
111 NE 72nd St, Ste 111Kansas City, MO, 64119(816) 408-3651 View on Google Maps
JLB Foundation Repair & Basement Waterproofing — Leawood
10308 State Line Rd Suite 300Leawood, KS, 66206(913) 660-6308 View on Google Maps
JLB Foundation Repair & Basement Waterproofing — Kearney
24011 State Rte 92Kearney, MO, 64060(816) 656-6835 View on Google Maps
Level Your Concrete. Get a Free Assessment.
A free assessment takes 20 minutes. We measure the settlement, give you a quote, and most jobs are done the same day. Call (816) 408-3651.