IllustrativeSunken Porch Leveling & Step Repair in Kansas City
PolyJacks levels settled porches, stoops, and concrete steps by injecting waterproof polyurethane foam through dime-sized holes, lifting the slab back into place without tear-out or replacement. Most Kansas City metro jobs finish in 2-4 hours, with the surface ready to use within hours. It costs a fraction of replacement, and every project starts with a free on-site estimate.
Why Porches and Concrete Steps Sink in Kansas City
Kansas City sits on expansive clay soil that swells when it's wet and shrinks when it dries out. That constant movement, combined with our freeze-thaw winters and heavy spring rain, opens up voids under porches, stoops, and concrete steps. Because steps and porches are usually poured on a smaller footing than the house itself, they settle at a different rate than the foundation - which is why you often see a step pull away from the front door or a porch slab dip toward the yard.
Poor drainage makes it worse. Downspouts that dump water right next to the porch wash soil out from underneath the slab a little at a time, until there's nothing left to support it. If you're not sure what's driving the settling at your place, our why is my concrete sinking page walks through the most common local causes, or use our diagnose tool to get a read on what's likely happening.
How Concrete Leveling Lifts a Sunken Porch or Step
Concrete porch leveling with polyjacking is a foam injection method, not a full tear-out. We drill a series of dime-sized holes through the settled step or porch slab, then inject a waterproof polyurethane foam underneath. The foam expands to fill the void left by eroded or compacted soil, and as it expands it gently lifts the slab back toward its original position.
The foam sets up in minutes, not days. Most porches and steps can be walked on in 15 to 30 minutes and see normal traffic nearby within 1 to 2 hours, which matters when a front step is your only way in and out of the house. Read more about the method on our polyjacking in Kansas City page, or see the broader picture on our concrete leveling overview.
We lift your slab from underneath — in hours, not days
A dime-sized hole. Waterproof foam. Your concrete rises back to level.
- 1. Drill dime-sized holes
- 2. Inject expanding foam
- 3. Slab lifts back to level
Level. Done. In Hours.
2–4 HOURS · WALK ON IT IN 30 MIN · WATERPROOF FOAM
The foam is lightweight — it re-supports your slab without overloading the soil, and it’s waterproof, so it won’t wash out like mudjacking.
Signs Your Porch or Steps Need Leveling
A few things to watch for around your porch and steps:
- A visible gap or step-down where the step meets the walkway or driveway
- The top step pulling away from the threshold of the front door
- One side of a porch slab noticeably lower than the other
- Cracking at the corners of steps, which often shows up before a visible drop
- Water pooling against the house instead of running away from it
Any of these can turn into a real trip hazard, especially on steps used every day. We cover trip-and-fall concerns in more depth on our sidewalk and trip hazard repair page, since the same settling patterns show up on walkways leading to a porch. If you're not sure whether what you're seeing is cosmetic or a real hazard, that's exactly what the free on-site estimate is for.
Foam vs. Mudjacking for Porches and Steps
Porches and steps are smaller, more exposed structures than a driveway, so the method matters more here than almost anywhere else on the property. Mudjacking lifts concrete with a heavy cement-based slurry pumped through large holes - fine for some jobs, but the weight of that slurry can be a problem on the same soft, eroded soil that caused the settling in the first place. Polyurethane foam is a fraction of the weight, so it doesn't add stress to soil that's already struggling to support the slab.
The foam is also waterproof, so it won't break down or wash out the way soil and some fill materials can over time. And because the injection holes are dime-sized instead of the larger holes mudjacking requires, your steps and porch are left looking close to how they did before. We break the two methods down side by side on our polyjacking vs. mudjacking page.
What to Expect on Leveling Day
We start with a walk-around of the porch and steps to look at the cracking pattern, the size of the gap, and what's likely happening underneath - that's the free estimate. If foam isn't the right fix for your situation, we'll tell you straight rather than talk you into a job that won't hold up.
On the day of the work, we mark the injection points, drill the dime-sized holes, and inject foam in stages, checking the lift as we go so the step or porch comes up evenly instead of all at once. Holes get patched when we're done. Most jobs finish in a matter of hours, and you're back to using the porch and steps within hours - walking in 15 to 30 minutes, driving nearby within 1 to 2 hours.
Porch & Step Leveling Across the Kansas City Metro
PolyJacks is a locally owned business based in Spring Hill, Kansas, and we serve homeowners across the full Kansas City metro on both sides of the state line - from Johnson and Miami counties in Kansas to Jackson and Cass counties in Missouri. Sunken porches and steps show up everywhere in this region because the clay soil and freeze-thaw cycle don't stop at a city border.
If you're closer to the Overland Park area, we've got city-specific pages with local detail - see concrete leveling in Overland Park as one example. Wherever you are in the metro, the free on-site estimate works the same way: we come look, we tell you honestly what's going on, and you decide from there.
Get a Free Porch & Step Estimate
A sunken porch or a step that's pulling away from your door isn't just annoying - it's a trip hazard for anyone walking up to your front door, including kids and older family members. PolyJacks offers a free, no-obligation on-site estimate for porch and step leveling anywhere in the Kansas City metro. We're proud of our five-star service, and we built this business on giving straight answers, not upsells.
Call (913) 713-7794 or fill out our contact form to schedule your free estimate.
What the work actually looks like
How polyjacking works — 90 seconds
Our team walks you through the three-step process: dime-sized holes, high-density polyurethane foam that fills every void and compresses the soil beneath your slab, and use within hours with no heavy trucks. Call (913) 713-7794 or book a free estimate below.
Frequently asked
What does porch and step leveling cost?
It depends on the size of the slab, how much it's settled, and how much void needs to be filled, so we don't publish flat pricing. The best way to get a real number is a free on-site estimate - call (913) 713-7794 or use our contact form and we'll walk you through it.
How long does porch or step leveling take?
Most residential porch and step jobs are done in a matter of hours. The foam cures in minutes, so you can typically walk on the area in 15 to 30 minutes and drive on nearby concrete within 1 to 2 hours.
Will the injection holes be noticeable?
The holes are about the size of a dime and get patched after the foam is injected. That's a much smaller footprint than mudjacking, which requires larger holes for its slurry mix.
Can you fix a step that's separated from the house?
Often, yes. A gap between a step and the door threshold is usually a sign of a void underneath, and foam injection can fill that void and lift the step back into place. We'll confirm that during the free estimate.
Is foam injection the same as mudjacking?
No. Mudjacking uses a heavy cement-based slurry through larger holes. Concrete leveling with polyurethane foam uses a lightweight, waterproof material and much smaller holes. See our polyjacking vs. mudjacking page for a full comparison.
Do you serve my city in the Kansas City metro?
We're based in Spring Hill, Kansas, and serve the full Kansas City metro across both Kansas and Missouri. If we don't have a page for your specific city yet, call (913) 713-7794 and we'll let you know if we cover your area.
Will the settling come back after leveling?
It depends on what's causing it. If poor drainage or a downspout is washing soil out from under the slab, we'll flag that during the estimate, because fixing the foam lift without addressing the water source can lead to settling again. We'd rather tell you that upfront than leave you guessing.
Get your free concrete leveling estimate
No obligation — and if foam isn't the right fix, we'll tell you straight.
Book your free estimate
Pick a time that works for you — free on-site inspection, no obligation. Prefer to talk? Call (913) 713-7794.