# Soil Stabilization New Orleans | New Orleans Concrete Leveling

> Soil stabilization in New Orleans: deep polyurethane injection firms soft soil under slabs so the lift holds. Free estimate within 24 hours of your call.

URL: https://concretelevelingneworleans.com/soil-stabilization/

# Soil Stabilization in New Orleans — Firm the Ground Under the Slab

When the soil under a slab is soft to depth, lifting the concrete alone may not hold. Deep polyurethane injection firms up the ground first.

[Call (504) 517-8336](tel:+15045178336) [Get a free estimate](#estimate)

Last updated: September 24, 2026

[New Orleans Concrete Leveling](https://concretelevelingneworleans.com/) connects property owners with independent local contractors for soil stabilization in New Orleans — injecting expanding polyurethane into soft, loose or washed-out soil beneath a slab to densify it and fill voids before, or instead of, lifting the concrete. It's the step that addresses the ground rather than just the slab.

New Orleans needs it more than most places. Much of the south shore sits on drained marsh and organic soil that the [City of New Orleans](https://ready.nola.gov/hazard-mitigation/hazards/subsidence/) says keeps compacting as it dries and oxidizes. A slab lifted over soft ground can go back down; stabilizing the layer under it gives the lift something firm to sit on.

## What happens on the first visit

Soil stabilization is recommended after a closer look at what's under the slab:

1.  **How far and how often the slab has dropped** — repeat settling is the classic sign.
2.  **Probe or test-hole readings** of how soft the soil is and how deep.
3.  **Water sources**, since wet soil will keep softening.
4.  **The load on the slab** — foot traffic, cars, equipment.
5.  **A written plan**: stabilize only, or stabilize and lift.

## How it differs from a normal lift

A standard lift puts material in the thin space right under the slab. Soil stabilization goes deeper: injection tubes are driven through the slab into the soil, and foam is injected at depth, where it expands, fills voids and compacts the surrounding soil. The slab may then be lifted with a shallow injection in the same visit.

Because foam is light and doesn't wash out once cured, it adds little load to soft ground — the reason [polyurethane foam](https://concretelevelingneworleans.com/polyurethane-foam-leveling/) is the usual material for this work.

## When it's worth adding

Consider it when a slab has already been leveled and sank again, when probing finds soft soil well below the slab, under heavily loaded slabs like garage floors and loading aprons, and around slabs over old utility trenches or backfill. For a first-time settle on a firm base, a standard lift is usually enough. [Will my slab sink again?](https://concretelevelingneworleans.com/guide/will-my-slab-sink-again/) covers the causes of repeat settling.

Not sure which method is right for your slab?

A free on-site estimate answers it — drop measured, voids checked, written price. Free estimate within 24 hours.

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

## How soil stabilization is priced

Stabilization is quoted by the volume of material and the number of injection points, after probing. It adds to the cost of a standard lift, which [HomeGuide](https://homeguide.com/costs/mudjacking-cost) puts at $8–$25 per square foot for foam. Ask whether the quote includes a volume cap and how overruns are billed. Large commercial scopes may cross Louisiana's [licensing thresholds](https://concretelevelingneworleans.com/guide/louisiana-contractor-license-concrete/).

## What a proper soil stabilization job includes

-   Probing to find soft layers and depth
-   Water source identified and addressed
-   Written plan: stabilize, lift, or both
-   Injection points spaced for coverage
-   Deep injection before any slab lift
-   Slab watched so it isn't lifted early
-   Holes patched and joints sealed
-   Volume used recorded for your records

## DIY patch vs cheapest operator vs proper soil stabilization

| Factor | DIY patch or topping | Cheapest operator | Proper leveling job |
| --- | --- | --- | --- |
| Fixes the void under the slab | No | Sometimes | Yes |
| Actually raises the slab | No | Yes | Yes |
| Drop measured at every joint first | No | No | Yes |
| Method chosen for your soil | n/a | Whatever rig they own | Yes |
| Written price before drilling | n/a | Rarely | Yes |
| Holes patched, joints sealed | n/a | Holes only | Yes |
| Drainage cause addressed | No | No | Yes |
| Carries liability insurance | n/a | Ask | Ask — and verify |
| Typical life | Cracks as the slab keeps moving | Short if the cause isn’t fixed | 5–10+ years (mudjacking) |
| Typical cost, 150 sq ft patio | Materials only | Lowest bid | $600–$1,400 slurry · ~$1,200–$3,750 foam |

Proper-job cost and life from [HomeGuide's mudjacking cost data](https://homeguide.com/costs/mudjacking-cost); foam range calculated at HomeGuide's $8–$25/sq ft. Resurfacers and self-leveling toppings cover the surface; they don't lift the slab.

## Soil Stabilization: related guides

-   [Learn Will my concrete sink again after leveling?](https://concretelevelingneworleans.com/guide/will-my-slab-sink-again/)
-   [Local Guide Why does concrete sink in New Orleans?](https://concretelevelingneworleans.com/guide/why-new-orleans-concrete-sinks/)

Free estimate line

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

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

[Call now](tel:+15045178336)

What a good estimate records

-   Drop at each joint, in inches
-   Void locations and size
-   Method and why it was chosen
-   Drainage fix, if needed
-   Written price and timing

[Free tool Is it a leveling job? Take the 2-minute assessment →](https://concretelevelingneworleans.com/tools/concrete-leveling-assessment/)

Step by step

## How soil stabilization works

1.  01
    
    ### Probe the soil
    
    Test holes or probes show how soft the soil is and how deep the soft layer goes.
    
2.  02
    
    ### Drive injection tubes
    
    Tubes go through the slab into the soil at planned depths and spacing.
    
3.  03
    
    ### Inject at depth
    
    Foam is injected into the soil, expanding to fill voids and compact the ground around it.
    
4.  04
    
    ### Lift and seal
    
    If needed, the slab is lifted with a shallow injection, then holes are patched and joints sealed.
    

Get your slab measured and priced.

Free estimate within 24 hours. Call (504) 517-8336 or send a request.

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

FAQ

## Soil Stabilization questions

### What is soil stabilization under concrete?

It's injecting expanding polyurethane into the soil beneath a slab, below the normal lifting depth, to fill voids and firm up soft ground so the slab has stable support.

### Do I need soil stabilization or just leveling?

A first-time settle on firm ground usually needs only leveling. Repeat settling, deep soft soil or heavy loads are the cases where stabilization is worth adding.

### Why is soil stabilization used in New Orleans?

Much of the south shore sits on drained marsh and organic soils that keep compacting, according to the City of New Orleans. Firming that layer helps a lift last.

### How is soil stabilization priced?

By the volume of material and number of injection points, quoted after probing. It adds to the cost of a standard foam lift.

### Who does the work, and are they licensed and insured?

New Orleans Concrete Leveling is a free service that connects you with an independent local contractor. We ask every contractor we work with to carry a license and insurance — and we recommend confirming both before work begins. Louisiana requires a state license for residential jobs over $75,000 and home improvement registration from $7,500 to $75,000, so most leveling jobs fall below both — which makes insurance the check that matters. See [how to verify a Louisiana contractor](https://concretelevelingneworleans.com/guide/louisiana-contractor-license-concrete/).

## Related services

-   [Void Filling Fill the washed-out space under a slab before it cracks — common near downspouts, leaking lines and slab edges. See how it works](https://concretelevelingneworleans.com/void-filling/)
-   [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/)
-   [Interior Slab Leveling Lift settled interior slab sections in additions, slab-on-grade homes and converted garages without tearing out the floor. See how it works](https://concretelevelingneworleans.com/interior-slab-leveling/)

Ready to level your slab?

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/)