Concrete Leveling and Slab Jacking in Shreveport, LA
A sinking driveway, sidewalk, or patio slab is one of the most common exterior concrete complaints in Shreveport, and it is caused by the same expansive clay behavior that drives interior foundation cracks, just on unloaded slabs that were never structurally connected to the house. Because these slabs are not load-bearing for the home itself, they are usually good candidates for concrete leveling rather than full pier replacement, at a fraction of the cost. This guide covers the two main leveling methods used in Shreveport, mudjacking and polyurethane foam injection, what each costs, and when leveling is not the right fix.
By Jason Green · Foundation Repair · Published August 31, 2026 · 8 min read
Why slabs sink in Shreveport specifically
Detached concrete slabs like driveways and patios settle when the soil beneath them loses volume, either from clay drying and shrinking during Shreveport's hot summers or from soil washing out due to poor drainage. Because these slabs sit directly on grade with no piers, even modest soil loss of an inch or two creates a noticeable dip or trip hazard.
Slabs poured near downspouts, low points in the yard, or areas where sprinkler heads spray directly onto the ground are especially prone to this kind of settlement in Shreveport's clay-heavy soil.
Mudjacking vs polyurethane foam
Mudjacking pumps a cement-based slurry mixture underneath the slab through drilled holes, lifting it back into place; it costs less per project, typically $500-$1,800 for a driveway or patio section, but the material is heavier and can take longer to cure and may re-settle sooner in soft or eroded soil.
Polyurethane foam injection uses a lightweight expanding foam through smaller holes, runs somewhat higher at $700-$2,500, cures within hours, and adds far less additional weight to already-soft soil, which can make it the better choice on slabs that sank because of soil erosion rather than simple clay shrinkage.
When leveling is not enough
If a slab has settled more than a few inches, has multiple large cracks running through it, or the soil beneath has a significant void from erosion (common near downspouts with no splash block or extension), leveling may not hold, and slab replacement could be the more durable option.
For attached slabs like a garage floor connected structurally to the home's foundation, or a covered patio slab tied into the roofline, consult a foundation contractor rather than a concrete leveling-only company, since movement there could indicate the same clay-driven settlement affecting the house foundation itself.
Fixing the cause, not just the symptom
Concrete leveling addresses the position of the slab but not the soil moisture swings that caused the settlement, so pair leveling with drainage fixes like extending downspouts away from the slab and regrading low spots, or the same section is likely to sink again within a few years in Shreveport's clay.
Ask your leveling contractor whether they are injecting material only under the sunken area or providing broader support, since a proper mudjacking or foam job should fill voids across the full affected zone, not just push up the lowest corner.
What to expect on repair day
Most residential driveway or patio leveling jobs in Shreveport take a few hours to half a day, and small holes drilled for injection are patched with matching concrete or capped, leaving minor visible dots that weather to blend in over time.
Ask about cure and traffic-load time before parking a vehicle back on a leveled driveway; polyurethane foam typically allows traffic within a few hours, while mudjacking slurry may need a day or more depending on weather.
Typical cost ranges
| Driveway section leveling (mudjacking) | $500 - $1,800 |
| Patio/walkway leveling (mudjacking) | $400 - $1,200 |
| Polyurethane foam leveling, small slab | $700 - $1,500 |
| Polyurethane foam leveling, larger driveway/garage floor | $1,500 - $2,500 |
| Void fill for erosion under slab | $600 - $2,000 |
| Downspout extension / regrading add-on | $200 - $900 |
Ranges are general estimates gathered from homeowner-reported quotes, not an offer or a quote for your project.
Common questions
How long does concrete leveling last in Shreveport?
A properly done leveling job addressing the full void, paired with corrected drainage, commonly lasts many years, but if the underlying moisture-driven soil loss or erosion is not addressed, the same slab section can settle again within a few years.
Is mudjacking or polyurethane foam better for Shreveport clay soil?
Both work, but foam's lighter weight makes it a better choice where soil has eroded or is soft, while mudjacking is often more cost-effective for larger areas with simple clay shrinkage settlement and stable underlying soil.
Can concrete leveling fix a sinking garage floor connected to my house?
If the slab is structurally tied to your home's foundation, have a foundation contractor evaluate it first, since the settlement could reflect the same clay-driven movement affecting the house itself, not just an isolated exterior slab.
Do I need a permit for driveway or patio concrete leveling in Shreveport?
Non-structural leveling of an existing driveway or patio slab generally does not require a permit from the City of Shreveport, but confirm with the Permits and Inspections office at 505 Travis Street if your project also involves replacement or expansion of the slab.
Will leveling fix a sidewalk trip hazard the city has flagged?
In many cases yes, since leveling can restore a flush surface without full replacement, but check with the city's Public Works department on any specific requirements for sidewalks in the public right-of-way before scheduling private repair.
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