# Polyurethane Foam vs Mudjacking: Which Is Better? | New Orleans Concrete Leveling

> Polyurethane foam vs mudjacking compared: cost, hole size, weight, cure time and durability — and which one fits New Orleans soil. A neutral side-by-side guide.

URL: https://concretelevelingneworleans.com/guide/foam-vs-mudjacking/

Decision Guide

# Polyurethane foam vs mudjacking: which is better?

A side-by-side comparison from a service that sells neither method: cost, weight, cure time, holes and durability, and where each one wins.

By New Orleans Concrete Leveling · Updated September 24, 2026

Neither polyurethane foam nor mudjacking is better for every slab. **Mudjacking costs about half as much** ($4–$9 vs $8–$25 per sq ft) and fills big voids economically. **Foam is far lighter, uses smaller holes and cures in about 15 minutes.** On soft New Orleans soil or for same-day use, foam usually wins; on firm fill, mudjacking.

[New Orleans Concrete Leveling](https://concretelevelingneworleans.com/) connects you with independent contractors and doesn’t sell either method, so this is a straight comparison. Cost and cure figures come from [HomeGuide](https://homeguide.com/costs/mudjacking-cost) (updated November 2025).

## Side by side

|  | Mudjacking (slab jacking) | Polyurethane foam (foam jacking) |
| --- | --- | --- |
| **Material** | Cement, limestone or sand, water | Two-part expanding polyurethane |
| **Cost per sq ft** | $4–$9 | $8–$25 |
| **Hole size** | About 1–2 in | About 5/8 in |
| **Weight added** | Roughly 100 lb per cu ft | A few lb per cu ft |
| **Ready to use** | Set ~24 hrs; 2–3 days to drive | Cures in ~15 minutes |
| **Water resistance** | Can erode if water keeps reaching it | Waterproof, won’t erode (HomeGuide) |
| **Typical life (HomeGuide)** | 5–10 years or longer | No fixed figure given |
| **Best at** | Big voids on firm fill, budget jobs | Soft soil, fast reopening, finished surfaces |

## Where mudjacking wins

-   **Price.** About half the per-foot cost. On a full 450 sq ft driveway: $1,800–$4,100 vs roughly $3,600–$11,250 with foam.
-   **Big washouts on firm ground.** Slurry fills large open voids economically.
-   **Outdoor flatwork you can stay off** for a day or two.

More detail: [mudjacking](https://concretelevelingneworleans.com/mudjacking/) and [mudjacking cost in New Orleans](https://concretelevelingneworleans.com/guide/mudjacking-cost-new-orleans/).

## Where foam wins

-   **Soft, compressible soil.** Much of the south shore sits on drained marsh that the [City of New Orleans](https://ready.nola.gov/hazard-mitigation/hazards/subsidence/) says keeps compacting. Adding 100 lb per cubic foot of slurry to that ground can feed further settling; foam adds almost nothing.
-   **Same-day use.** Driveways, garages, storefront walks and pool decks reopen within the hour.
-   **Small, neat holes** on stamped, coated or interior concrete.
-   **Wet locations** — near pools, downspouts and leaking-prone lines.

More detail: [polyurethane foam leveling](https://concretelevelingneworleans.com/polyurethane-foam-leveling/) and [foam jacking cost](https://concretelevelingneworleans.com/guide/foam-jacking-cost-new-orleans/).

Not sure which one your slab needs?

A free on-site estimate checks the soil, the void and the surface, and explains the method choice in writing.

[Call (504) 517-8336](tel:+15045178336) [Use the cost estimator](https://concretelevelingneworleans.com/tools/concrete-leveling-cost-estimator/)

## How to decide for your slab

1.  **Is the soil soft?** On drained-marsh neighborhoods — Lakeview, Gentilly, Metairie, north Kenner — lean foam.
2.  **How big is the void?** Large open washout on firm fill: slurry is economical.
3.  **When do you need it back?** Same day: foam.
4.  **What’s the surface?** Finished, stamped, coated or indoors: foam’s small holes.
5.  **What’s the budget?** If none of the above force foam, mudjacking is the value choice.

A contractor who only owns one rig will recommend that rig. Ask why the method fits **your** slab — see [how to hire a concrete leveling contractor](https://concretelevelingneworleans.com/guide/hiring-a-concrete-leveling-contractor/).

## Bottom line

Mudjacking is cheaper; foam is lighter, faster and neater. On New Orleans’ softest ground, foam is often worth the premium; on firm fill with a big void, slurry usually is the better buy. For an estimate that explains the choice, call **[(504) 517-8336](tel:+15045178336)** — free estimate within 24 hours.

## Quick answers

### Which lasts longer, foam or mudjacking?

HomeGuide puts mudjacking at five to ten years or longer and describes cured foam as waterproof and erosion-resistant. In practice both last longest when drainage is fixed and joints are sealed; soil conditions matter more than the material.

### Is foam better for the environment than slurry?

They trade off. Slurry is mostly cement, limestone or sand and water; foam is a petroleum-based polyurethane but uses far less material by weight. Ask the contractor about the specific product.

### Can a contractor use both on one job?

Yes. Some jobs use slurry to fill a large void cheaply on firm ground and foam near a pool, a house or a finished surface. A good estimate explains the choice for each area.

[Related service Polyurethane Foam Leveling Lightweight expanding foam through 5/8-inch holes. Cures in about 15 minutes. $8–$25 per sq ft. See how it works](https://concretelevelingneworleans.com/polyurethane-foam-leveling/)

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[(504) 517-8336](tel:+15045178336)

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## More guides

-   [Cost Guide How much does mudjacking cost in New Orleans?](https://concretelevelingneworleans.com/guide/mudjacking-cost-new-orleans/)
-   [Cost Guide How much does foam jacking cost in New Orleans?](https://concretelevelingneworleans.com/guide/foam-jacking-cost-new-orleans/)
-   [Decision Guide Concrete leveling vs replacement: how do you choose?](https://concretelevelingneworleans.com/guide/leveling-vs-replacement/)
-   [Learn How long does concrete leveling last?](https://concretelevelingneworleans.com/guide/how-long-does-concrete-leveling-last/)
-   [Learn Will my concrete sink again after leveling?](https://concretelevelingneworleans.com/guide/will-my-slab-sink-again/)

Stop guessing. Get your slab measured.

Call now for a free, no-hassle quote. Estimates within 24 hours.

[Call (504) 517-8336](tel:+15045178336) [Request a free estimate](https://concretelevelingneworleans.com/contact/)