Concrete Contractors in Kenner, LA
New Orleans Concrete Contractors pours driveways, patios, and commercial slabs in Kenner, building every project to the heavier specs that Jefferson Parish clay and a high water table demand. The soft alluvial soil beneath Kenner compresses over time, and slabs poured without proper base preparation and reinforcement settle unevenly within a few years. Every estimate includes a subgrade assessment specific to the site.
Key facts
- Kenner sits on soft alluvial clay with a water table 2 to 5 feet below grade, making subgrade preparation critical on every pour.
- Residential driveways in Kenner are typically poured at 5 inches thick with #4 rebar on 18-inch centres, versus the 4-inch standard on stable ground.
- A compacted limestone or sand base of at least 6 inches is standard practice here before any slab is formed.
- Driveway replacement in Kenner runs $8 to $14 per square foot in 2026, depending on demolition scope and subgrade repair.
- Permit requirements for new impervious surface are set by Jefferson Parish Department of Inspection and Code Enforcement.
What concrete services are available in Kenner?
New Orleans Concrete Contractors handles the full range of residential and commercial flatwork across Kenner and the surrounding Jefferson Parish corridor.
Residential concrete work in Kenner
Residential services include driveway replacement and new pours, patio slabs, walkways, garage floors, and steps. A standard Kenner driveway replacement covers 400 to 700 square feet and takes two to three days from demo to finishing. Patio slabs run 200 to 600 square feet depending on lot coverage. Every residential pour includes control joints cut within 12 hours to manage shrinkage cracking in the humid climate.
Commercial concrete work in Kenner
Commercial services cover parking lots, loading docks, equipment pads, and site flatwork. Commercial slabs on Kenner's alluvial ground are typically specified at 6 inches of 4000 PSI concrete with #4 rebar on 12-inch centres, reflecting the higher load and the compressible subgrade. Site drainage fall is designed into every commercial layout before forming begins.
What do Kenner ground conditions mean for concrete work?
Kenner sits on soft alluvial clay and organic silt deposited by the Mississippi River over thousands of years. This material compresses slowly and unevenly as organic content decomposes and as moisture levels fluctuate with the seasons and with pumping cycles. The water table sits 2 to 5 feet below grade across most of the city, which means subgrade soil stays near saturation for much of the year.
Why Kenner slabs settle and how the work changes
A slab poured directly over native Kenner clay without a prepared base will lose support underneath as the clay consolidates. The slab does not drop uniformly. The edges and corners go first, producing the characteristic raised centre and cracked perimeter visible on older driveways throughout the city. The mechanism is differential settlement, not surface cracking from traffic load.
Correcting for this ground requires three things. First, a compacted base of 6 inches of crushed limestone or coarse sand replaces the top of the native clay, giving the slab a stable, draining platform. Second, slab thickness increases to 5 inches for residential driveways and 6 inches for anything carrying vehicle loads heavier than a passenger car. Third, reinforcement changes from the 6-by-6 wire mesh common in drier markets to deformed #4 rebar on 18-inch centres, which holds the slab together as a unit if minor movement does occur beneath it. A 6-mil poly moisture barrier between the base and the concrete reduces capillary moisture migration into the slab from below, which matters when the water table is 2 feet down.
Drainage grading is equally important. A Kenner slab needs a minimum 1.5 percent fall away from the structure so standing water does not pond against the edge and saturate the base over time. These are not upgraded options on a Kenner pour. They are the baseline spec.
What does concrete work cost in Kenner?
Concrete work in Kenner costs more per square foot than equivalent work on stable ground because the subgrade preparation is heavier. The 2026 ranges below reflect Jefferson Parish labour and material rates and include the base work described above.
2026 cost ranges for common Kenner concrete projects
| Project type | Typical size | Cost range per sq ft | Typical total |
|---|---|---|---|
| Driveway replacement | 400 to 650 sq ft | $8 to $14 | $3,200 to $9,100 |
| Patio slab | 200 to 400 sq ft | $7 to $12 | $1,400 to $4,800 |
| Garage floor replacement | 400 to 600 sq ft | $9 to $15 | $3,600 to $9,000 |
| Commercial parking slab | 1,000 sq ft and up | $10 to $16 | $10,000 and up |
Four factors move the number on any Kenner project: the depth of subgrade repair required after demo, whether the existing base material can be recompacted or must be replaced, the reinforcement spec driven by load class, and access constraints that affect concrete truck placement. A driveway with 3 inches of settled base that needs full excavation costs more than one where the existing gravel base is sound and only needs compaction.
What permits and approvals does Kenner concrete work require?
Flatwork permit requirements in Kenner are set by Jefferson Parish Department of Inspection and Code Enforcement. Permit review is generally triggered by work that adds new impervious surface, alters site drainage patterns, touches the public right-of-way, or falls within a designated flood zone. Replacing an existing driveway in kind at the same footprint tends to follow a different path than expanding coverage or changing grade.
Flood-zone considerations are relevant across much of Jefferson Parish. Work that changes how water drains off a property can require documentation before a permit is issued. Confirm the current requirements, any applicable fees, and whether your specific project triggers review directly with Jefferson Parish Department of Inspection and Code Enforcement before work begins.
Recent concrete projects in Kenner
Driveway replacement, east Kenner
Driveway replacement, 580 square feet. The original 1990s slab had dropped 2.5 inches at the garage apron where the underlying clay had consolidated beneath a shallow, uncompacted fill. The entire slab was removed, the subgrade excavated an additional 4 inches, and 6 inches of crushed limestone was compacted in two lifts before forming. Poured at 5 inches of 3500 PSI concrete with #4 rebar on 18-inch centres and a 6-mil poly barrier. Broom finish, control joints at 10-foot intervals. Completed in three days.
Rear patio slab, central Kenner
New patio slab, 320 square feet. The existing grade drained toward the house foundation, and the native clay subgrade was saturated from a blocked perimeter drain. Subgrade was excavated to 8 inches, perimeter drainage re-routed, and 6 inches of coarse sand base compacted before the form was set with a 2 percent fall away from the structure. Poured at 4 inches of 3500 PSI concrete with 6-mil poly and #3 rebar on 18-inch centres. Salt finish. Completed in two days.
How do you get a concrete estimate in Kenner?
A free on-site estimate takes 20 to 30 minutes. During the visit, the subgrade condition is assessed, existing drainage fall is measured, and any demolition scope is confirmed. A written itemised quote covering base work, concrete spec, reinforcement, finish and control joint layout is provided within 24 hours of the visit. Call or submit the contact form to schedule.
Common questions
- How thick should a concrete driveway be in Kenner?
- A residential driveway in Kenner should be poured at 5 inches of 3500 PSI concrete, one inch thicker than the 4-inch standard used on stable ground. The soft alluvial clay and high water table in Jefferson Parish require the added thickness and #4 rebar on 18-inch centres to hold the slab together if minor subsidence occurs beneath it.
- Why do concrete slabs settle so fast in Kenner?
- Kenner sits on soft alluvial clay and organic silt with a water table 2 to 5 feet below grade. The organic material compresses over time, and the clay swells and shrinks with moisture changes. Slabs poured without a compacted 6-inch limestone or sand base lose support unevenly, causing the edges and corners to drop first.
- Do I need a permit to replace my driveway in Kenner?
- Permit requirements are set by Jefferson Parish Department of Inspection and Code Enforcement. Whether a driveway replacement requires a permit depends on the project scope, flood-zone status, and whether any drainage changes are involved. Confirm the current requirements with Jefferson Parish Department of Inspection and Code Enforcement before work starts.
- How much does a concrete driveway cost in Kenner in 2026?
- A driveway replacement in Kenner runs $8 to $14 per square foot in 2026, or roughly $3,200 to $9,100 for a 400 to 650 square foot driveway. The range is driven by demolition scope, how much subgrade repair the existing base requires, and the reinforcement specification for the load class.
- How long before I can drive on new concrete in Kenner?
- Vehicle traffic should stay off new concrete for 7 days minimum. Foot traffic is safe at 24 to 48 hours. Full compressive strength is reached at 28 days. These timelines apply regardless of weather conditions and are not shortened by curing compounds or warm temperatures.
- What base preparation is standard for a Kenner concrete slab?
- Standard base preparation for a Kenner slab is 6 inches of compacted crushed limestone or coarse sand placed over the native clay subgrade. A 6-mil polyethylene moisture barrier is laid over the base before the concrete is poured. This base spec is not an upgrade. It is the minimum for stable performance on Jefferson Parish alluvial ground.
Concrete services in Kenner
Concrete Driveways in Kenner
Concrete Patios in Kenner
Stamped & Decorative Concrete in Kenner
Concrete Slabs in Kenner
Concrete Repair in Kenner
Sidewalks & Walkways
Residential Concrete
Concrete Steps & Stoops
Residential Concrete
Concrete Resurfacing
Residential Concrete
Concrete Leveling & Lifting
Residential Concrete
Concrete Removal & Demolition
Residential Concrete
Pool Decks
Residential Concrete
Retaining Walls
Residential Concrete
Garage Floors
Residential Concrete
Commercial Concrete
Commercial Concrete
Parking Lots & Paving
Commercial Concrete
ADA Sidewalks & Curbs
Commercial Concrete
Foundations & Slab-on-Grade
Commercial Concrete
Industrial Concrete Flooring
Commercial Concrete
Drainage & Detention
Commercial Concrete
Last updated August 5, 2026
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