# Interior Slab Leveling New Orleans | No Tear-Out | New Orleans Concrete Leveling

> Interior slab leveling in New Orleans: settled floors in additions and converted garages lifted through small holes. Free estimate within 24 hours.

URL: https://concretelevelingneworleans.com/interior-slab-leveling/

# Interior Slab Leveling in New Orleans — Lift the Floor From Below

A settled section of interior slab can often be lifted through a few small holes, without breaking out the floor. Here's when it works and when it's a foundation job.

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

Last updated: September 24, 2026

[New Orleans Concrete Leveling](https://concretelevelingneworleans.com/) connects homeowners with independent local contractors who lift settled interior concrete slabs — in additions, converted garages, slab-on-grade homes and sunrooms — by injecting material under the floor through small holes. Interior slab leveling in New Orleans is priced on site, because floor coverings, access and the cause of the settling vary too much for a useful average; as a reference point, [HomeGuide](https://homeguide.com/costs/mudjacking-cost) lists polyurethane foam at **$8–$25 per square foot**.

The most common New Orleans case is an addition or enclosed porch. The original house sits on piers or a slab poured decades ago; the addition was poured later on newer fill, and that fill has settled. The result is a floor that slopes down toward the outside wall, a crack where old meets new, and doors that no longer close cleanly.

## What happens on the first visit

An interior estimate is as much diagnosis as measurement. The contractor checks:

1.  **Floor elevations across the room**, with a laser or manometer, to map where and how far the slab dropped.
2.  **Whether it's the slab or the foundation.** Wall cracks, sticking doors and gaps at the ceiling line point beyond the floor.
3.  **What's on the floor** — tile, wood, LVP or carpet — and where holes can go with the least disruption.
4.  **Plumbing under the slab.** A leaking drain or supply line is a common cause of interior settling and must be fixed first.
5.  **Method and a written price.** Indoors, that almost always means foam.

## Why foam is the standard method indoors

Inside a house, the cleaner and lighter method wins. **[Polyurethane foam](https://concretelevelingneworleans.com/polyurethane-foam-leveling/)** goes in through holes about 5/8 inch wide, so they can often be placed in grout lines, under cabinets or where flooring will be replaced anyway. It adds very little weight to the soil, it doesn't pump water into the house, and it cures in about 15 minutes.

**[Mudjacking](https://concretelevelingneworleans.com/mudjacking/)** is rarely used indoors: its holes are 1–2 inches, the slurry is heavy and wet, and the equipment is harder to bring into a finished room.

## Slab settling vs foundation movement

Leveling lifts a slab that has lost its support. It is not a substitute for foundation repair when the foundation itself — the footings, grade beams or piers — has moved. The [sinking slab or foundation problem guide](https://concretelevelingneworleans.com/guide/sinking-slab-or-foundation-problem/) lists the warning signs. If a structural engineer is needed, get that opinion before anyone drills.

On a raised New Orleans house, the main floor is framing on piers — that is house leveling, a separate trade. Interior slab leveling applies to rooms built on a slab, like additions, converted garages and slab-on-grade homes common in Metairie, Kenner, Chalmette and the Westbank.

## Plumbing first, then the lift

Water under an interior slab usually comes from inside the house: a cracked cast-iron drain, a leaking supply line or a failed shower pan. Water washes soil out and the slab follows it down. If there's a musty smell, a damp spot or a water bill that crept up, have a plumber test the lines before the floor is lifted. Otherwise the new support washes out the same way. [Will my slab sink again?](https://concretelevelingneworleans.com/guide/will-my-slab-sink-again/) covers the causes that bring settling back.

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 interior leveling is priced

Interior jobs are quoted after the elevation survey because the price depends on how much of the floor dropped, how far, what flooring is in the way and whether plumbing work comes first. Foam at $8–$25 per square foot is the reference range, and most contractors carry a $300–$700 minimum.

Standard homeowners policies generally exclude settling, but a covered plumbing leak that caused the washout may be a different conversation with your insurer — see [does insurance cover concrete leveling?](https://concretelevelingneworleans.com/guide/does-insurance-cover-concrete-leveling/). If you're replacing floors anyway, see [slab leveling before flooring](https://concretelevelingneworleans.com/slab-leveling-before-flooring/).

## What a proper interior slab leveling job includes

-   Elevation map of the affected floor
-   Foundation warning signs checked and noted
-   Plumbing leak check recommended where signs exist
-   Hole placement planned around finished flooring
-   Foam injected in small, controlled lifts
-   Lift monitored with a laser across the room
-   Holes patched and crack at old/new joint sealed
-   Written notes on anything outside the scope

## DIY patch vs cheapest operator vs proper interior slab leveling

| 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.

## Interior Slab Leveling: related guides

-   [Decision Guide Sinking slab vs foundation problem: how to tell the difference](https://concretelevelingneworleans.com/guide/sinking-slab-or-foundation-problem/)

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 interior slab leveling works

1.  01
    
    ### Call or request an estimate
    
    Tell us which room and what you're noticing. You'll hear back to set up a free on-site estimate within 24 hours.
    
2.  02
    
    ### Elevation survey
    
    The contractor maps the floor, checks for foundation and plumbing causes, and gives a written price and plan.
    
3.  03
    
    ### Drill and inject
    
    Small holes go through the slab in planned spots, and foam is injected in increments while the floor is watched with a laser.
    
4.  04
    
    ### Patch and finish
    
    Holes are patched, the crack at the old/new joint is sealed, and the room is usable within the hour.
    

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

## Interior Slab Leveling questions

### Can an interior concrete floor be leveled without removing it?

Usually, yes. Polyurethane foam is injected through holes about 5/8 inch wide, lifting the slab from below. Holes can often go in grout lines or areas where flooring will be replaced.

### How much does interior slab leveling cost?

It's priced on site after an elevation survey. As a reference, HomeGuide lists polyurethane foam at $8–$25 per square foot, and most contractors have a $300–$700 minimum.

### Does a sloping floor in an addition mean a foundation problem?

Not necessarily. Additions are often poured on newer fill that settles on its own. Straight walls, working doors and no ceiling-line gaps point to a slab issue; the opposite points to the foundation.

### Is foam safe inside a home?

Leveling foams are two-part polyurethanes that cure in minutes. The work area is ventilated during injection, and once cured the foam is inert and sealed under the slab.

### 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

-   [Slab Leveling Before Flooring Lift a settled slab before tile, LVP or hardwood goes down, so the new floor doesn't crack or telegraph the dip. See how it works](https://concretelevelingneworleans.com/slab-leveling-before-flooring/)
-   [Garage Floor Leveling Raise a sinking garage or carport slab, close the step at the driveway and find out whether the cracking is structural. See how it works](https://concretelevelingneworleans.com/garage-floor-leveling/)
-   [Soil Stabilization Inject polyurethane into soft or washed-out soil under a slab to firm up the base before — or instead of — a lift. See how it works](https://concretelevelingneworleans.com/soil-stabilization/)

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/)