Mudjacking vs Polyjacking — The Complete Guide

If your driveway has dropped, your sidewalk has tipped, or your patio pools water against the house, you have two main ways to lift that concrete back to level. The mudjacking vs polyjacking decision confuses a lot of Des Moines homeowners, mostly because franchise sales reps push one method without explaining the other. This guide breaks down how traditional mudjacking works, what it costs, how long it lasts, and when polyurethane foam makes more sense. You will get straight answers from a crew that pumps slurry and foam in central Iowa clay every week, not a national script. By the end, you should know which method fits your slab before you ever request a quote, and you should feel confident weighing mudjacking vs polyjacking on your own terms.

What You'll Find in This Guide

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What Mudjacking Actually Is and How the Process Works

Mudjacking goes by several names. You may hear concrete jacking, slab jacking, or mud pumping, and all of them describe the same process. First, a crew drills small holes through your sunken slab, usually about the size of a coffee cup. Then they pump a slurry of water, soil, sand, and cement through those holes. The slurry fills the voids under the concrete and builds pressure. As a result, the slab rises back toward level, often within an hour or two.

The reason your slab sank in the first place matters here. In the Des Moines metro, expansive clay soils swell when wet and shrink when dry. Add our freeze-thaw cycles, and the ground under your concrete moves constantly. Over time, that movement opens voids beneath the slab. The concrete has nothing to rest on, so it settles into the gap. Downspouts that dump water next to a driveway edge speed this up considerably. For context, the USDA Natural Resources Conservation Service maintains detailed soil survey data that shows just how much clay content sits under central Iowa yards.

Mudjacking works because it replaces that lost support with dense material. The slurry cures into a firm base that carries the load of the slab and whatever sits on it. This means your existing concrete stays in place, so you skip demolition, hauling, new pours, and weeks of cure time. According to HomeAdvisor, mudjacking runs 25% to 50% less than replacing a slab entirely, which is the main reason homeowners choose it over a full tear-out.

What Mudjacking Can and Cannot Fix

That said, mudjacking is a lifting method, not a repair-everything method. It works well on slabs that sank but stayed structurally sound. A driveway section that dropped two inches at the garage apron is a classic candidate. However, a slab that has shattered into small pieces cannot be lifted cleanly, because the pieces rise unevenly and the result looks worse than the settlement did. Similarly, mudjacking will not fix surface spalling or flaking. Those are resurfacing problems, and we handle them as a separate service. If you want to know whether your specific slab qualifies, our mudjacking service page for Des Moines walks through the situations we see most often, including edge cases like stamped or colored concrete.

Before you commit to any lifting method, it also helps to understand roughly what your project should cost, since that number often shapes which approach makes sense for your budget.

Mudjacking and Polyjacking: How to Choose the Right Lifting Method

This is the comparison most homeowners actually search for, and it deserves an honest answer. Polyjacking, also called polyurethane foam injection, follows the same basic idea as mudjacking. A crew drills holes and injects material beneath the slab. However, the material and the results differ in ways that matter for your wallet and your slab, which is exactly why the mudjacking vs polyjacking debate keeps coming up in homeowner forums and neighborhood chats.

Mudjacking uses a heavy cement slurry. It is inexpensive, dense, and strong under load. The drill holes are larger, roughly one to two inches across. The slurry needs time to cure before the slab takes full traffic, usually a day or so. Because the material weighs a lot, it adds load to soil that may already be weak. In practice, that rarely causes problems on residential slabs, but it is a real consideration on badly saturated ground.

Polyjacking uses expanding polyurethane foam instead. The holes are smaller, about the size of a dime. The foam cures in minutes, so you can drive on the slab the same day. Additionally, foam weighs a fraction of what slurry weighs, which helps when the underlying soil is soft. The trade-off is price: foam costs more per job, sometimes significantly more, so the savings from mudjacking can matter a great deal on larger slabs.

When We Recommend Each Method

So which wins the mudjacking vs polyjacking question? It depends on your slab, and anyone who says otherwise is selling one product. We recommend mudjacking when the slab is thick and sound, the budget matters, and a day of cure time is no problem. Driveways, sidewalks, and patios often fit this profile well. On the other hand, we recommend foam when you need same-day use, when the voids are hard to reach, or when the soil cannot take added weight. Garage floors and interior slabs often lean toward foam for these reasons.

Beyond that, watch out for companies that only offer one method. The national franchise networks in the Des Moines market typically push foam exclusively, because that is what their system sells. As a result, homeowners get quoted foam prices for jobs that mudjacking would handle for less money and just as much durability. We carry both methods on our trucks, so our recommendation follows your slab, not a franchise agreement. If cost is your main filter, our mudjacking cost guide explains where the money goes in either approach, line item by line item.

What Mudjacking Costs, How Long It Lasts, and Whether It's Worth It

Price is usually the first question, so let's start there. According to HomeAdvisor, mudjacking costs $3 to $6 per square foot. Angi puts the national average between $661 and $1,871, with most homeowners paying around $1,232. Those ranges hold up reasonably well against what we see across the Des Moines metro. However, your actual number depends on how far the slab sank, how big it is, and how easily a crew can reach it with equipment. For example, a tipped sidewalk panel near the street costs far less than a full driveway that dropped three inches behind a fence.

Keep one more figure in mind: Angi notes that small jobs may carry a minimum charge of around $500, even when the affected area is under 100 square feet. This means a single sunken step or one small panel still requires a truck, a crew, and setup time, so the per-square-foot math does not always apply cleanly to tiny repairs. For a deeper look at what drives your specific price up or down, read our full guide on how much mudjacking costs.

How Long Does Mudjacking Last?

Now the harder question: is mudjacking permanent? The honest answer is that mudjacking lasts as long as the soil beneath it stays stable. The cured slurry itself does not degrade in any meaningful timeframe. In practice, most mudjacking lifts hold for eight to ten years or more, and many hold indefinitely. However, if the original cause of settlement continues, no lifting method will hold forever, whether you choose mudjacking or foam. A downspout that keeps washing soil out from under your driveway will eventually undermine slurry, foam, or fresh concrete alike.

With this in mind, a good crew fixes the drainage problem or at least tells you about it clearly. We point out gutter, grading, and downspout issues during every assessment, because a lift that fails in three years helps nobody, including us.

Is Mudjacking Worth the Money?

For most sound slabs, yes. Replacement costs two to four times more and leaves you with weeks of cure time plus a color-mismatched pour that never quite matches the surrounding concrete. Additionally, Angi reports that concrete leveling projects can recoup 70% to 90% of their cost in added home value. For the safety-minded homeowner, there is also the trip-hazard factor to weigh. A raised sidewalk edge is a liability for guests, mail carriers, and your own family. Leveling it is one of the cheaper safety fixes you can make to a property, and it usually pays for itself quickly in avoided liability alone.

Ultimately, whether you lean toward mudjacking or polyjacking, getting a professional assessment beats guessing from a franchise brochure. A crew that offers both methods can tell you honestly which one fits your slab, your soil, and your budget, rather than steering you toward whichever product they happen to sell.

Ready to Get Started?

If your concrete has sunk, tipped, or cracked, get an assessment from a crew that levels slabs in Des Moines soil every day. We will look at your slab, explain whether mudjacking or foam fits it better, and give you a straight price with no franchise script. Reach out to Des Moines Concrete Leveling Pros and get your concrete back where it belongs.