# Mudjacking vs Polyjacking | Wichita Foundation Solutions

> Sand-slurry mudjacking or polyurethane foam? Compare cure time, hole size, weight, and longevity under Great Plains rain to choose the right method.

URL: https://www.wichitafoundationsolutions.com/guide/mudjacking-vs-polyjacking/
Last-Modified: 2026-07-03

You know how frustrating a sinking driveway or uneven patio can be, especially when water starts pooling near your foundation. Choosing between mudjacking vs polyjacking (polyurethane concrete leveling) usually comes down to material weight, cure times, hole sizes, and how the repair handles our unpredictable local weather.

Our team at Wichita Foundation Solutions sees these exact structural settlement and drainage issues across south-central Kansas every single week.

A quick look at the data shows exactly why one method might be better for your specific concrete problem. The details matter immensely for a long-lasting repair. We want to provide the full comparison so you can follow along when evaluating a solution.

## What each material is

Mudjacking slurry is a heavy mixture of Portland cement, sand, and water pumped beneath a slab to lift it. Polyurethane foam is a lightweight, two-part liquid resin that expands into a closed-cell foam to achieve the same result. Our crews use these materials to fill the void below a sunken slab and restore its original grade.

With traditional mudjacking, contractors pump a thick slurry through injection ports. As the space fills and pressurizes, the concrete lifts back into place. We see the cement slurry harden into a firm supportive layer under the concrete once cured.

| Feature | Mudjacking | Polyurethane Foam |
| --- | --- | --- |
| Material Type | Cement, soil, sand, and water slurry | High-density two-part liquid resin |
| Delivery Method | High-pressure hydraulic pumping | Expanding chemical reaction |
| Typical Use | Basic concrete void filling | Precision lifting and stabilization |

Polyurethane foam uses a very different chemical process. When the two liquid parts meet at the injection nozzle, they react and rapidly expand. Our technicians watch the resulting high-density foam fill the void and continue expanding to lift the slab securely.

Cured foam is incredibly dense, water-resistant, and non-compressible. Both methods work well by filling voids and pressurizing the underside of the slab.

## Cure time

Mudjacking typically requires 24 to 72 hours for a full cure before you can drive a car on it. Polyurethane foam cures in about 15 to 30 minutes, allowing almost immediate use. Our technicians always factor your daily schedule into the recommendation.

Mudjacking requires significant patience from the homeowner. Foot traffic is usually possible within a few hours. We know vehicle traffic typically needs an overnight cure, or up to 72 hours to reach full design strength.

To summarize the return-to-service timeline:

-   **Foot Traffic:** Both methods allow walking within a few hours.
-   **Vehicle Traffic (Mudjacking):** Requires 24 to 72 hours of waiting.
-   **Vehicle Traffic (Foam):** Ready for cars in 1 to 2 hours.
-   **Full Strength:** Mudjacking takes days, while foam reaches peak strength in minutes.

Polyurethane foam cures in a fraction of that time. You can often drive a heavy vehicle on the repaired slab within just one to two hours. Our commercial clients find this rapid turnaround is a massive advantage for a busy apron or parking lot.

If you need the concrete slab back in use quickly, foam easily wins the comparison. If cure time is not a factor at all, mudjacking is perfectly fine.

## Hole size

Mudjacking requires larger drill holes that are roughly one to two inches in diameter. Polyurethane foam leveling uses much smaller holes that measure about 5/8 of an inch across. Our installation process places these ports strategically to ensure the most even lift possible.

Mudjacking ports are quite large, typically matching the diameter of a golf ball or slightly bigger. Once patched with new cement, these injection sites are visible but not overly obtrusive. We prefer the significantly smaller and less invasive polyurethane ports for highly visible areas.

These 5/8-inch holes are roughly the diameter of a penny. Patched foam holes look very subtle.

When deciding if hole size is a priority, consider the location of the repair:

-   **Front walkways:** High visibility makes smaller foam ports desirable.
-   **Stamped decorative patios:** Blending large mudjacking patches into colored concrete is very difficult.
-   **Standard driveways:** Both patch sizes usually look perfectly acceptable.
-   **Commercial floors:** Function often outweighs the cosmetic appearance of the patch.

![Polyurethane foam expanding under a slab](/images/misc/polyurethane-foam-expanding-under-a-lifted-slab-th.webp)

## Weight on the underlying soil

Mudjacking slurry is extremely heavy and adds about 100 to 130 pounds per cubic foot to your soil. Polyurethane foam is incredibly light, adding only 2 to 4 pounds per cubic foot. Our experience shows this 95 percent weight difference is critical for long-term stability.

Slurry fills the void and adds massive weight to the soil column beneath your slab. On completely stable soil, this added weight is not a problem. We frequently see issues on weak or highly compressible soil, where that heavy burden accelerates future sinking.

| Material | Weight Per Cubic Foot | Soil Impact |
| --- | --- | --- |
| Mudjacking Slurry | 100 to 130 lbs | High risk of re-settlement on weak soil |
| Polyurethane Foam | 2 to 4 lbs | Minimal impact on underlying earth |

Foam fills the void and lifts the slab without adding meaningful weight to the earth below. On weak soils, that lightweight property is a major advantage. Our default recommendation for most Wichita metro slabs on average-to-good soil is that either material works well.

On chronic wet zones or soft-soil corners, foam is definitely the better call. A quick comparison highlights the dramatic difference in soil impact.

## Longevity under Kansas rain

Mudjacking slurry is porous and prone to washing out, often lasting only 2 to 5 years in wet conditions. Polyurethane foam is a waterproof, closed-cell material that can last 10 to 20 years or more. We regularly see the damage that unchecked water runoff causes to traditional concrete repairs.

Kansas gets heavy downpours that test any foundation fix. Water flowing under a lifted slab can wash out traditional fill material over time if you do not correct the underlying drainage. We know cement slurry is porous and highly vulnerable to erosion.

Under sustained water flow or seasonal freeze-thaw cycles, this mixture slowly breaks down. If a slab sits next to poor drainage that has not been addressed, a mudjacking repair may need a touch-up eventually.

> “A common mistake is ignoring the downspouts near a freshly leveled slab. If you have a slab next to poor drainage that you cannot easily fix, foam is always the safer, longer-lasting material.”

Our teams prefer polyurethane foam in these situations because it is completely hydrophobic. Water flowing across the cured resin does not dissolve or erode it. On drainage-adjacent slabs, foam is the undisputed winner for longevity.

We always suggest foam for any slab where the underlying drainage will not be fully solved.

![Mudjacking versus foam injection hole size](/images/misc/comparison-of-large-mudjacking-patch-holes-versus-.webp)

## Cost

Mudjacking is typically the cheaper option, averaging $3 to $6 per square foot nationally in 2026. Polyurethane foam costs more upfront, usually ranging from $5 to $25 per square foot. We provide clear pricing upfront so you can weigh the value of each option.

Mudjacking is usually the lower-cost option per individual lift. The traditional materials are inexpensive, the process is well-established, and the required equipment is relatively simple. We charge more for polyurethane foam projects because the high-density resin is a specialized, premium product.

The equipment required to properly heat and inject the foam is also highly technical and expensive to operate. When comparing foam vs mudjacking, both concrete leveling methods are generally 50 percent to 70 percent cheaper than tearing out and pouring a brand new slab.

To put these costs into perspective for a local project:

-   **Simple jobs:** A straightforward driveway lift with no drainage complications makes mudjacking a great value pick.
-   **Premium needs:** For time-sensitive commercial jobs or drainage-adjacent slabs, foam is usually worth the higher premium.
-   **Decorative surfaces:** Highly visible stamped concrete justifies the extra cost of small foam injection ports.

![Patched driveway after foam lifting](/images/misc/freshly-patched-concrete-driveway-after-polyuretha.webp)

## Which we recommend, and when

Matching the material to the exact situation ensures a repair that actually lasts. A one-size-fits-all approach does not work for South-Central Kansas soils. Our default process is to carefully inspect the site before making any suggestions.

The right choice depends entirely on your property’s specific needs. Here is a breakdown of when each method makes the most sense:

-   **Mudjacking:** Best for standard residential driveways, sidewalks, and basic patios where initial cost matters most.
-   **Polyurethane foam:** Ideal for commercial jobs, time-sensitive turnarounds, and slabs located near poor drainage.
-   **Weak soils:** Foam is always preferred for properties dealing with highly compressible clay or chronic wet zones.
-   **Decorative concrete:** Foam is the clear winner for stamped or highly visible surfaces due to the tiny injection holes.

We see excellent long-term results from both methods when they are installed correctly. See our 

how slab lifting works guide

[/guide/how-concrete-slab-lifting-works/ →](/guide/how-concrete-slab-lifting-works/)

 for the process itself.

## Free on-site estimate

The initial inspection provides the exact answers you need to move forward. A professional assessment takes the guesswork out of concrete repair. We will quote the project accurately and explain exactly why we suggest that approach.

Bring the slab issue to our attention and get a clear recommendation for your specific property. Book a thorough evaluation through our 

concrete leveling service

[/concrete-leveling/ →](/concrete-leveling/)

 or call 316-264-6666.

COMMON QUESTIONS

## Questions about this topic

Is polyjacking better than mudjacking? +

Foam cures faster, is lighter, uses smaller injection holes, and resists washout under heavy Kansas rain. It costs more upfront. Mudjacking is proven and cheaper, and it still works on most jobs.

Does foam last longer in Kansas rain? +

Polyurethane will not wash away like sand-cement slurry sometimes can under repeated Great Plains downpours. On drainage-adjacent slabs, that matters.

Which is cheaper? +

Traditional mudjacking is usually lower cost per lift. Foam adds material cost but delivers speed, smaller holes, and lighter load on the underlying soil.

## Have a specific question about your home?

Our specialists give honest, no-pressure reads on foundation, drainage, and basement problems across south-central Kansas.

Free On-Site Estimate

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OR CALL DIRECTLY 316-264-6666

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