Polyjacking and Concrete Leveling in Raytown, MO
If your driveway drops where it meets the garage, or the front walk has a lip you step over without thinking, the concrete is usually not the problem. The soil under it moved. Polyjacking and concrete leveling in Raytown, MO fills that void and raises the slab back to grade, most often in a single morning and for a fraction of a tear-out.
Olson Foundation Repair has been doing this across Jackson County since 1986, from a shop on Blue Ridge Boulevard minutes from Raytown Road.
Why Raytown Concrete Sinks
Jackson County clay swells when it takes on water and shrinks when it dries out, and with 38 to 42 inches of rain a year and dozens of freeze and thaw cycles every winter, it never stops moving. Below it sits Kansas City Group limestone, including a bed named the Raytown Limestone after this town in 1915. Water soaks down, hits that rock, turns sideways and carries fine soil out with it. That is how a void opens under a slab that looked fine last spring.
Four things make it worse here:
- Roll-back curbs and open ditches. Most of Raytown has roll-back curbs or no curb at all, so storm flow runs along the pavement edge and works under the driveway.
- Driveway culvert pipes. Rusted, crushed or silted pipes push ditch water into the soil under your apron instead of carrying it past.
- Backyard ditches. The City’s stormwater bond list names subdivision after subdivision still moving water by open ditch across private yards.
- Old water mains. Parts of Raytown are still served by 2-inch galvanized main that the water company has been replacing since 1992, and a slow leak under a driveway quietly removes the support.
Sixty-year-old flatwork and downspouts dumping at the same slab edge since 1962 finish the job.
What Concrete Leveling Does for a Raytown Property
Lifting a slab back to grade solves more than the eyesore. Here is what you actually get out of it.
- The trip hazard is gone the same day. A raised lip on a front walk or driveway apron is what a guest or a delivery driver catches a toe on, and in Raytown, the public walk out front is largely your responsibility to keep safe.
- You use the slab immediately. Ready for foot traffic in about half an hour and for vehicles the same afternoon, instead of a week of cure time behind cones.
- It costs a fraction of a tear-out. You are paying to fix the soil problem, not to demo and replace concrete that never failed.
- The void gets filled, not just the surface. Foam expands into the empty space and packs the loose soil back down, so the slab is supported again rather than patched on top of the same hole.
- Water starts draining the right way. A patio tilting back toward the house or a driveway holding puddles is feeding water into the ground next to your foundation. Correcting the slope sends it away instead.
- Your yard stays intact. No demolition, no forms, no equipment cutting through grass and landscaping. The ports are about 5/8 inch and get patched.
- The concrete still matches. You keep the original slab, color, and finish, rather than a fresh gray panel sitting next to sixty-year-old flatwork.
If you are also seeing cracks in the basement wall, doors that stick, or water coming in after a storm, that is a separate problem from a sunken slab. Start with foundation repair or basement waterproofing instead.
Concrete We Lift for Raytown Homes and Businesses
If it is a free-floating slab and it has dropped, concrete jacking can usually bring it back.
- Driveways and the garage apron. The most common call we get in Raytown. That step where the driveway meets the garage catches tires, holds water, and gets deeper every season.
- Driveway approaches at roll-back curbs. The outside edge is where ditch flow does its damage first.
- Front walks, stoops, and steps. The trip hazard your mail carrier feels before you do.
- Patios. Especially the ones now sloping back toward the house, which is how a settled patio quietly becomes a wet basement.
- Garage floors and basement floors. Interior concrete floor leveling is the same process, done cleanly, without a tear-out of your finished space.
- Pool decks and AC pads.
- Void filling under porches and stoops, even where the slab is still sitting level for the moment.
- Commercial walks, entry pads and loading aprons along 63rd Street, Blue Ridge Boulevard and the 350 Highway corridor.
If the real cause is water rather than age, lifting alone is a temporary fix. That is when we point clients toward drainage solutions or gutter installation first, then the lift.
What Polyjacking and Concrete Leveling in Raytown, MO Involves
Most residential jobs here are one visit, a few hours, and one crew. Here is the sequence.
1. We measure the drop and locate the void.
We measure how far the slab has actually fallen and identify where the empty space sits underneath. We also look at why. A driveway sinking on the ditch side because the culvert pipe has failed is a different repair plan than a patio sinking because a downspout has been dumping at the corner for forty years.
2. We drill 5/8 inch injection ports.
About the diameter of a penny. Mudjacking needs holes two inches or wider, and you will still see them years later.
3. Two-part polyurethane foam goes in under pressure.
It expands, fills the void, compacts the loose soil back down, then begins to lift. The cured foam weighs roughly 2 to 4 pounds per cubic foot, so we are not adding load to soil that is already struggling. It is also hydrophobic, so it does not erode when the next four-inch rain comes through.
4. We lift gradually, checking as we go.
Concrete lifting is not one push. The slab comes up in stages so it returns to grade without cracking, and we check the elevation between stages.
5. Ports patched, joints sealed, site cleaned.
The foam cures in place within minutes, and the area is ready for use in about half an hour. No forms, no demolition, and no driveway blocked off for a week.
Our exterior injections carry a standard two-year warranty. More on the method itself is on our Kansas City polyjacking and concrete leveling page.
Concrete Jacking, Concrete Lifting and Replacement Compared
Concrete jacking, slab jacking, concrete raising, and concrete lifting all describe the same objective. What changes is the material going under the slab and what it does to your soil over the next ten years.
| Method | How it works | Downtime | Fit for Raytown |
| Polyjacking (polyurethane foam) | High-density foam injected through 5/8 inch ports; expands, fills the void, lifts the slab | Ready for use in about 30 minutes; drive on it the same day | Best fit. Light, waterproof, and it does not wash out of a yard that already drains water across it |
| Mudjacking (cement slurry) | Sand, soil, and cement slurry pumped through 2-inch holes to push the slab up | 24 to 72 hours before you can use the area | Weak fit. Slurry runs about 100 lbs per cubic foot, so it loads already weak clay, and it erodes where water keeps moving |
| Full tear out and replacement | Demo the slab, haul it off, re-form, re-pour, cure | Several days on site plus days of cure | Correct only when the concrete itself has failed, not when the dirt under it has |
The weight line matters most here. Mudjacking answers a weak-soil problem by pouring a hundred pounds per cubic foot of wet slurry onto the weak soil. In a city where the stormwater plan is still catching up to overland flow across private yards, that is the wrong material.
Foam is not always the answer either. If a driveway is spalling badly or has broken into loose pieces, lifting it gives you a level pile of broken concrete. In that case, we will tell you it is a job for our concrete contractor services instead.
Polyjacking and Concrete Leveling Cost in Raytown, MO
Cost is not driven by the square footage on top. It is driven by how much empty space is underneath. A small front stoop over a deep washout can take more material than a two-car driveway that dropped three quarters of an inch. So we price by the pound of foam that actually goes in.
| Service | Olson rate |
| Poly lifting | $10 per pound of foam injected |
| Full tear out and replace, driveway | $18 to $22 per sq. ft. |
| Full tear out and replace, patio | $20 to $24 per sq. ft. |
| New flatwork, 4 inch | $16 to $20 per sq. ft. |
| New flatwork, 6 inch | $22 to $26 per sq. ft. |
Lifting the slab you already own is a fraction of replacing it, and you are parking on it the same afternoon instead of waiting out a cure.
What moves your number:
- Void depth. The single biggest factor.
- How much lift you need. Half an inch is a different job than three inches.
- Number of slabs. Six sidewalk panels is more setup than one patio.
- Access. A driveway we can pull the rig up to is easier than a back patio behind a locked gate.
- Joint and crack sealing after the lift.
A note on cheaper bids. You will find lower quotes for concrete leveling in Raytown. The difference is almost always how much foam is being quoted. Underfill the void and the slab settles again in a couple of years, and you pay twice. If a bid comes in far below everyone else’s, ask how many pounds it covers.
Full rates are on our pricing page, and financing is available if the timing is tight.
Why Raytown Picks Olson as Their Concrete Leveling Company
- Since 1986. Four decades in this metro. We were lifting concrete in Jackson County long before most of the companies bidding against you today existed, and we are not a national franchise operating from a local address.
- We are practically neighbors. Our shop is on Blue Ridge Boulevard in 64138. Same corridor, same clay, same weather.
- The person who bids it works for us. No call center, no handoff to a commissioned system designer.
- We say no when lifting is the wrong call. If the slab has broken into pieces, or the real problem is a failed driveway culvert that will just sink it again, we will tell you that instead of selling you a two-year fix.
- We see the whole property. Most leveling outfits only lift concrete. We also handle foundation piering, wall crack repair, waterproofing, and drainage, so when a settled patio is aiming water at your basement wall, we recognize it.
- 4.7 stars across 90+ Google reviews, BBB A+ accredited, and named one of Kansas City’s top foundation repair contractors by BloggerLocal and TheHomeMag. Read what our customers say.
Frequently Asked Questions About Concrete Leveling in Raytown
We price poly lifting at $10 per pound of foam injected, so your total tracks the size of the void under the slab rather than the square footage on top. Replacing that same driveway instead runs $18 to $22 per square foot at our rates. You get an exact number after a free on-site look.
Usually yes. Mid-century flatwork here was typically poured 4 to 6 inches thick, and the slab itself is often still structurally sound even when the surface looks tired. If it lifts as one piece, it is a candidate; if it has broken into loose sections, those sections need replacing.
In Raytown, the property owner is expected to keep the sidewalk in good order, and may obtain a Right-of-Way Permit to repair an unsafe walk back into Code compliance. That is different from cities where the public walk is entirely the city’s job. Your driveway, approach, private walk, patio and garage floor are yours in every case.
Lifting existing concrete on private property does not trigger the same permitting as new construction or structural foundation work. Work in the right-of-way is a different matter and requires a Right-of-Way Permit, which also requires the contractor to hold a current Raytown business license. We confirm which category your project falls into before we start.
The polyurethane itself does not erode, wash out or break down, so the fill is permanent and our exterior injections carry a standard two-year warranty. What can change is the soil around it. If a failed driveway culvert or a backyard ditch keeps moving dirt, new voids can open nearby, which is why we look at drainage during the estimate.
For this soil, generally yes. Foam weighs about 2 to 4 pounds per cubic foot while mudjacking slurry runs roughly 100 pounds per cubic foot, so foam does not add load to clay that is already weak. Foam is also waterproof, while slurry can erode where water keeps running.
The apron section nearest the door sits on perimeter backfill, while the center of the floor sits on the compacted building pad. Over 60 years, that backfill settles further than the pad and the concrete follows it down. It is the single most common concrete floor leveling job we do in Raytown.
Yes. Polyurethane cures by chemical reaction rather than by drying, so cold does not stop it the way it stops a concrete pour. Winter is often a good time to get on the schedule, since spring is when everyone notices what the freeze and thaw cycle did.
It closes the void that caused the crack and can tighten hairline separations as the slab comes back together, and we seal joints after the lift. It will not rebuild concrete that is spalling or fractured into pieces. If that is what you have, we will tell you it needs replacement rather than lifting.
Almost always because the cause was never fixed. If a downspout, a roadside ditch or a leaking service line keeps carrying soil away, any leveling method will eventually lose its support. We look for the source first so the repair holds.
Get a Free Estimate on Your Raytown Slab
Send us a photo, or better, let us come out and shoot the elevations. We will tell you how far the slab has actually moved, what opened the void, whether lifting or replacing is the right call, and what it will cost. No inspection fee and no obligation.
Serving Raytown, 64133 and 64138, plus Independence and the surrounding Jackson County communities from our shop on Blue Ridge Boulevard. See our full service area.
Call (913) 592-3300 or request your free estimate online and get a firm quote for polyjacking and concrete leveling in Raytown, MO.
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