Concrete Contractors in Harahan, LA

What concrete services are available in Harahan?

New Orleans Concrete Contractors handles the full range of residential and commercial flatwork in Harahan.

Residential concrete work in Harahan

Residential services include driveway installation and replacement, patio slabs, garage floors, front walkways, steps and stoops. A standard residential driveway in Harahan is poured at 5 inches of 4000 PSI mix over a 4-inch compacted limestone base with #4 rebar on 18-inch centres. Patio slabs are poured at 4 inches of 3500 PSI minimum. Garage floors, which carry concentrated vehicle weight on a soil type prone to settlement, are reinforced with #4 rebar on 18-inch centres in both directions.

Commercial concrete work in Harahan

Commercial services cover parking lots, loading aprons, warehouse floors and concrete curbing. Commercial slabs in Harahan are detailed at 6 inches of 4000 PSI or higher, with a compacted base of 6 inches of crushed limestone, and a 6-mil poly vapour barrier below the pour to manage moisture migration from the shallow water table. Dowelled joints are installed at all control locations to keep adjacent panels from differentially settling.

What do Harahan ground conditions mean for concrete work?

Harahan sits on soft alluvial clay and organic silt deposited by centuries of Mississippi River flooding, and the water table in most of the city is 2 to 5 feet below finished grade. These two facts govern every concrete decision made on a Harahan site.

Why Harahan slabs settle

Organic silt compresses slowly and continuously under load. A slab poured directly over undisturbed native soil transfers its weight into material that consolidates over years, producing the uneven settlement that splits driveways at their centres, drops garage aprons 2 to 3 inches below the door threshold and creates trip hazards on walks. The mechanism is not freeze-thaw or tree roots, both of which occur elsewhere in the region. In Harahan, the dominant failure is downward movement driven by organic compression and moisture fluctuation in the clay layer.

What the correct response looks like

The correct response begins with excavation to 8 to 10 inches below finished grade, removal of soft organic material where encountered, and replacement with 4 to 6 inches of compacted crushed limestone or washed concrete sand. Compaction is tested with a plate compactor in two lifts. A 6-mil poly vapour barrier is laid before any pour to slow moisture wicking from the saturated clay into the slab. Slab thickness is 5 inches for residential driveways and 6 inches for any commercial or heavy vehicle area. Reinforcement is #4 rebar, not wire mesh, because rebar maintains position during the pour and continues to function after the slab has flexed. Control joints are saw-cut every 8 to 10 feet within 12 hours of finishing to relieve shrinkage stress before random cracking can initiate. Drainage fall is set at a minimum 1.5 percent away from foundations so surface water does not pond and re-saturate the subgrade.

What does concrete work cost in Harahan?

A standard driveway replacement in Harahan runs $13 to $18 per square foot in 2026, installed. A 600 sq ft driveway falls between $7,800 and $10,800 at the lower end, reaching $11,400 or higher when demolition reveals soft subgrade requiring additional excavation and limestone fill. A patio slab in the 300 to 400 sq ft range runs $5,200 to $7,200 depending on thickness, access and edge detail. A garage floor at 400 sq ft runs $6,000 to $8,800 with full vapour barrier and rebar package.

What moves the price on a Harahan job

Four things change the number on a Harahan concrete job. First, subgrade condition: a native clay subgrade that must be excavated and replaced with 6 inches of limestone adds $2 to $4 per square foot against a job with acceptable existing fill. Second, demolition: removing an existing 5-inch reinforced slab costs more than pouring over open ground. Third, slab thickness: stepping from 4 inches to 5 inches adds roughly 25 percent to concrete volume and pump time. Fourth, finish: a broom finish is the baseline; exposed aggregate or stamped concrete adds $4 to $8 per square foot depending on the pattern depth.

What permits does concrete work require in Jefferson Parish?

Flatwork permit requirements in Jefferson Parish are set and enforced by the Jefferson Parish Department of Inspection and Code Enforcement. Whether a specific project requires a permit depends on the scope of work, the amount of new impervious surface being added, whether drainage patterns are altered, whether the work is within or adjacent to the public right-of-way, and whether the property falls within a designated flood zone. Projects that add significant impervious coverage, alter sheet drainage toward a neighbouring property or street, or break into a kerb line generally trigger review. Flood-zone parcels in Harahan carry additional considerations under Jefferson Parish flood ordinance. No specific thresholds, fees or form numbers are stated here because those figures are subject to revision. Confirm current permit requirements with the Jefferson Parish Department of Inspection and Code Enforcement before any work begins.

Recent concrete projects in Harahan

Driveway replacement, Harahan

Driveway replacement, 580 sq ft. The existing slab had settled 2.5 inches at the garage apron where organic silt had compressed under the original pour, leaving a lip that damaged the vehicle undercarriage. The old slab was broken out and removed. Subgrade excavation went to 10 inches below finish grade, exposing saturated clay that was removed and replaced with 6 inches of crushed limestone compacted in two lifts. The new slab was poured at 5 inches of 4000 PSI with #4 rebar on 18-inch centres and 6-mil poly below the pour. Broom finish, control joints at 9-foot intervals. Four days from demo to final broom.

Rear patio slab, Harahan

Patio slab, 360 sq ft. The site had poor fall toward the house foundation, and the previous patio showed a longitudinal crack from differential settlement where a buried tree root had allowed the subgrade to void. Root material was excavated and the void was filled with compacted concrete sand in 2-inch lifts to a total depth of 5 inches. A 6-mil vapour barrier was installed across the full footprint. The new slab was poured at 4 inches of 3500 PSI with #4 rebar on 18-inch centres. Finished grade was set at 2 percent fall away from the foundation. Salt-finish texture, three days total.

How do you get a concrete estimate in Harahan?

A free on-site estimate for a Harahan project takes 30 to 45 minutes. The visit covers a measurement of the full work area, a visual assessment of the existing subgrade or slab condition, identification of drainage fall and any right-of-way considerations, and a review of the spec options for thickness, reinforcement and finish. A written price range is provided the same day or within 24 hours. There is no fee and no obligation. Contact New Orleans Concrete Contractors to schedule.