Is It Cheaper to Level Concrete or Replace It? The Real Math

Is It Cheaper to Level Concrete or Replace It? The Real Math

Is it cheaper to level concrete or replace it? In nearly every case, leveling wins — it typically costs 50 to 70 percent less than tearing out the old slab and pouring a new one. In the Shreveport area, lifting a settled driveway, patio, sidewalk, or pool deck usually runs $3 to $8 per square foot with foam injection (mudjacking often runs a little less), while full replacement commonly costs $8 to $20 or more per square foot with demolition, haul-off, forming, and pouring included. If the concrete is in decent shape and the problem is just that it sank, leveling is almost always the smarter money.

The short version: if your slab is structurally sound but sitting uneven, leveling it back up with foam or mudjacking costs roughly half of replacement and is usually done in a single day. Replacement only earns its higher price when the concrete is badly cracked, crumbling, or too thin to save. A free inspection from a local contractor tells you which camp your slab is in.

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What Concrete Leveling Actually Is

Concrete leveling — sometimes called slab jacking — means raising a settled slab back up instead of replacing it. The crew drills small holes through the concrete, pumps a lifting material underneath, and the material fills the soil voids and pushes the slab back toward level. The holes get patched, and the slab is usable the same day.

There are two common methods. Mudjacking pumps a cement-based slurry under the slab through holes about an inch and a half wide. Polyurethane foam injection does the same job with a two-part foam that expands as it cures, pumped through holes closer to a dime in size. Foam is newer, lighter, and more precise, which is why it has become the go-to for most residential jobs in northwest Louisiana.

Why does concrete settle in the first place? Under most Shreveport-area slabs, the culprit is the soil. Much of Caddo Parish sits on expansive clay that shrinks in dry summers and swells when the rains return. Years of that cycle — plus water washing fine soil out from under driveways through poor drainage — open pockets under the slab and sections start to drop.

The Real Cost Comparison

Let us put actual numbers side by side, because this is where the decision usually gets made. These are typical Shreveport-area ranges for a standard residential job — a driveway, patio, or sidewalk — not exact quotes, because every slab is different.

Method	Typical cost per sq ft	Timeline	Best for
Mudjacking	$3–$6	1 day, usable in 24–48 hrs	Budget lifts on thick, sound slabs
Foam injection	$4–$8	1 day, usable same day	Precise lifts, pool decks, porches
Full replacement	$8–$20+	1–2 weeks, cure 7+ days	Crumbling, shattered, or undersized slabs

On a 400-square-foot driveway, the math is stark: foam leveling lands around $1,600 to $3,200, while full replacement typically runs $3,200 to $8,000 — and can climb higher when access is tight or the base needs work. That is why the rule of thumb holds: leveling costs about a third to a half of replacement.

Replacement also carries costs people forget to budget: hauling the old concrete away, and a week or more with no usable driveway while the new pour cures. And the new slab still sits on the same soil that sank the old one unless the base is rebuilt properly — skip that step and you can end up paying twice.

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When Leveling Is the Smarter Choice

Leveling is the right call in most situations homeowners actually face. If your concrete matches the list below, you can probably save the slab and the money.

• The concrete is in good shape. Solid surface, edges not crumbling, no spiderweb of cracks. Settlement is a soil problem, and leveling fixes the soil side.
• Only some sections sank. A driveway with dropped middle panels or a patio corner tilted toward the house is a textbook leveling job — lift the low spots, leave the rest.
• You have trip hazards. Raised edges where one sidewalk panel sits above the next are a liability worry, and leveling brings them flush in a day.
• Water is pooling or running the wrong way. A sunken slab that slopes toward the foundation can often be re-pitched with foam so water drains away from the house.
• The settled area is under something expensive. Pool decks, porches, and driveways bordered by mature landscaping cost a fortune to replace. Leveling avoids touching any of it.
• You need it done fast. Leveling is usually a one-day job, and foam-cured slabs can be driven on the same day. Replacement means a week or more with no driveway.

One honest caveat: leveling fixes the slab, not the reason it sank. If poor drainage caused the voids, the contractor should address gutters and grading too — otherwise the soil can wash out again over the years. Our concrete leveling page walks through how a proper job handles the cause, not just the symptom.

When Replacement Is the Better Buy

Leveling is not always the answer, and an honest contractor will tell you when it is not. If your slab looks like the descriptions below, replacement is usually the smarter long-term spend.

• The concrete is falling apart. Deep cracks in every direction, flaking or chipping surfaces, or aggregate showing through mean the slab itself is failing. Lifting it just gives you a level pile of rubble.
• It has been patched too many times. If sections were already mudjacked twice or the surface has layers of old patch, you are throwing good money after bad. Start fresh.
• The slab was poured too thin. Some older Shreveport-area driveways were poured three inches thick or less with no rebar. Thin slabs crack under vehicle weight no matter how level they are.
• You need to change the design. Widening the driveway or re-grading the area is easier with a fresh pour built to the layout you actually want.
• The base is fundamentally bad. If the soil under the slab is organic fill or construction debris that will never stabilize, leveling buys you a couple of years at best.

There is also a middle ground: a slab with one or two small cracks but otherwise sound concrete can often be sealed and leveled for a fraction of replacement cost. That is exactly the kind of call a free inspection sorts out.

Mudjacking vs. Foam: Which Leveling Method Should You Pick?

If leveling is the answer, the next question is which method. Here is how they stack up for a typical Shreveport homeowner.

Mudjacking is the older method and usually the cheaper one — often $1 to $2 less per square foot than foam. The downside is weight: the slurry is heavy, which is a real concern on soft Louisiana soils where added load can contribute to future settlement. The holes are also bigger (about an inch and a half), and the slab typically needs a day or two before it can take full weight.

Polyurethane foam injection costs more but brings real advantages. The foam is extremely light — roughly two pounds per cubic foot versus a hundred-plus for slurry — so it adds almost no weight to the soil. The injection holes are small, about the size of a dime, and easy to patch. Foam cures in minutes, so driveways can be driven on the same day, and because the foam expands to fill every void, it stabilizes the soil under the slab better, which helps the lift last.

For most homes we see, foam is the better value even at the higher price, because precision and same-day use matter. Mudjacking still has a place on very large, thick slabs where the savings are huge. Our breakdown of mudjacking vs. foam costs goes deeper on how to choose.

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Red Flags That Should Make You Pause

Concrete leveling is a straightforward trade, which makes it easy for low-quality outfits to cut corners. Watch for these before you hire anyone.

• A quote with no measurements. A real leveling quote is based on square footage and how much lift each section needs. A flat “we can do it for $800” without measuring is a guess, not a quote.
• No talk about drainage. If the contractor does not ask where water goes around the slab, they are not thinking about why it sank. Voids refill and slabs re-settle when the water problem stays.
• Pressure to decide today. A one-day-only price on a repair that is not an emergency is a sales tactic, not a service. Get a second quote.
• No warranty in writing. Reputable leveling work comes with a written warranty on the lift. Verbal promises about the slab “never moving again” are worth nothing — and no honest contractor claims a slab can never move.
• Cash-only or no paperwork. You want a written scope: how many square feet, which sections, which method, and what the warranty covers. No paperwork, no deal.

It also pays to ask how the contractor handles the cause. The LSU AgCenter at lsuagcenter.com publishes research on Louisiana’s expansive soils — a contractor who can talk specifically about Caddo Parish clay and local drainage has done this work here.

How Long Does Leveled Concrete Last?

This is the question that decides whether leveling is really cheaper, because a repair that fails in two years is no bargain. Done right, a foam leveling job on a sound slab typically holds for many years — often a decade or longer. The foam itself does not break down or wash away, so longevity comes down to the soil: if the drainage that caused the original voids gets fixed, the lift stays put.

Mudjacking generally lasts a bit less than foam here, mainly because of the weight difference. Heavy slurry adds load to clay soils already prone to shrinking, so re-settlement can show up sooner — though plenty of mudjacked driveways in Shreveport are still level after many years when the drainage was handled.

Replacement, for comparison, lasts decades when the base is built right — but new concrete on a bad base settles just like the old one did. Our guide on how long concrete leveling lasts covers the maintenance that keeps a lift holding. If your sunken slab sits next to the house, check that water is not threatening the foundation too — see our foundation repair services and our service area list.

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Frequently Asked Questions

How much cheaper is leveling than replacing concrete?

Leveling typically costs 50 to 70 percent less than full replacement. Foam leveling runs about $3 to $8 per square foot while replacement runs $8 to $20 or more once demolition, disposal, and finishing are included. The savings are biggest on large areas like driveways.

Can you level a driveway that has cracks in it?

Hairline cracks are usually fine — they can be sealed and the slab still leveled. Wide or crumbling cracks are a different story: if the slab is breaking apart, leveling will not make it whole, and replacement is the better call.

How long does concrete leveling take?

Most residential leveling jobs finish in a single day. Foam injection cures in minutes, so you can usually drive on the slab the same day. Mudjacking needs 24 to 48 hours of cure time. Full replacement takes one to two weeks including cure time.

Is foam injection really better than mudjacking?

For most homeowners, yes. Foam is lighter, more precise, cures faster, and the holes are much smaller. Mudjacking costs less per square foot and still works well on thick slabs where budget is the priority. Neither is wrong — it depends on your slab and your budget.

Will leveled concrete settle again?

It can, if the cause of the settlement is not addressed. The foam or slurry fills current voids, but if water keeps washing soil out from under the slab, new voids form over the years. Fixing gutters, grading, and drainage at the same time is what makes a lift last.

Can you drive on leveled concrete right away?

With foam injection, usually yes — the foam cures within minutes and slabs can take vehicle weight the same day. Mudjacked slabs need about a day of cure time before heavy use. Your contractor should give you a specific time based on the method used.

Does leveling work on sidewalks and pool decks?

Yes — those are ideal candidates. Sidewalks and pool decks are thinner and lighter than driveways, so foam injection lifts them precisely without the disruption of a tear-out. Pool decks especially benefit because replacement means working around coping and plumbing.

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Get a Free Concrete Evaluation in Shreveport

The math is simple — leveling is usually half the cost of replacement — but the right call still depends on your slab. Our free inspection covers the concrete, the soil and drainage around it, and an honest recommendation: level it, replace it, or leave it alone.

Call Pelican Foundation Repair at (318) 585-2003, or visit Pelican Foundation Repair to schedule. We handle concrete leveling, foundation repair, and drainage across the metro — see our service area list.

Pelican Foundation Repair
6118 Fairfield Ave, Shreveport, LA 71106, USA
318-585-2003
https://foundationrepairshreveport.com/