Why we tie concrete to the dirt work
Slab failures in this area almost always come from one of two places. Either the pad under the slab was not prepped right, or the slab itself was not poured to handle the kind of clay we are working with. We do both pieces under one roof so the dirt and the concrete are built to the same plan. The pad is compacted in lifts to the depth and density it needs. The slab is reinforced, formed, and finished so it can take the seasonal movement that South Louisiana ground hands it every year.
Flatwork looks simple from the outside. A truck pulls up, the concrete goes down, somebody runs a screed. The work is in the parts before and after that pour. The prep, the reinforcement, the timing of the finish, the curing. That is where slabs that last get separated from slabs that crack in year two.
What we pour
Residential house slabs. Monolithic slabs and slabs with separate footings, sized to whatever the plans call for. Reinforced with rebar or post-tension where the engineer specifies it. Edge thickening, plumbing penetrations, vapor barrier, and finish work all coordinated with the plumber and the framer.
Shop and garage slabs. Six-inch slabs for residential garages and shops, heavier slabs for working buildings that take truck and equipment loads. Smooth or broom finish depending on what the building is for.
Equipment and tank pads. For HVAC units, generators, propane tanks, and outdoor equipment. Small but important, and they have to be level.
Driveways and approaches. Concrete driveways, parking aprons, and turnarounds. Sized for residential vehicles or for the trucks that actually use them. Jointed and reinforced so they do not crack on a grid.
Sidewalks and patios. Walking surfaces around the house, the shop, or the pond. Broomed, stamped, or smooth finish.
Flatwork around the property. Loading aprons for barns, wash pads, dog runs, anything else that needs a hard surface.
The South Louisiana concrete problem
The biggest enemy of a slab in this area is the soil under it. Expansive clay moves up and down with moisture content. In a wet winter it swells. In a dry summer it shrinks. A slab on top of that takes stress with every cycle. That is why you see cracked slabs across this region, and that is why the prep matters as much as the concrete.
We handle it by undercutting unsuitable material, bringing in select fill, compacting properly, and tying the slab to a perimeter beam or footing that gives it stability. On heavier loads or trouble spots, we pour deeper with more steel. The right approach depends on what is going on the slab and what is under it. We figure that out before we set the forms.
What goes into a slab pour
- Pad confirmation. Verify the pad is at finish grade, compacted, and dry enough to pour on.
- Form set. Forms set to the slab dimensions, leveled and braced.
- Plumbing rough-in coordination. Penetrations marked and protected so they end up exactly where the plumber needs them.
- Vapor barrier. Six-mil plastic over the pad, sealed at seams and around penetrations.
- Steel. Rebar mat or post-tension cables tied per the structural plan, chaired up off the ground.
- Pour. Concrete placed, screeded, bull floated. We schedule the pour around weather and crew availability so it goes down clean.
- Finish. Edges, joints cut at the right time, surface finished to the specified texture.
- Cure. Curing compound or wet cure depending on the conditions. Heat and dry wind are the enemies of a fresh slab in Louisiana summer.
How we coordinate with the rest of your build
On a house slab, the plumber roughs in before the pour and we work around their stub-ups. The electrician may have an underslab conduit or two. The HVAC crew may have a duct or trunk if it is a slab-on-grade ducted system. We coordinate the timing so everything that has to be in the slab is in the slab before the truck shows up. Once the concrete is down, we are not jackhammering it the next week because somebody got forgotten.
On a shop or commercial pour, the steel building company has anchor bolts that need to land exactly where the column bases sit. We set those to the building drawings using a templated layout so the building goes up without modifications.
Joints, reinforcement, and the details that matter
Joints are not optional. Concrete cracks. You either tell it where to crack with a saw cut, or you let it do whatever it wants. We cut control joints on a grid sized for the slab thickness, usually about 24 to 30 times the slab depth in feet. On a five-inch slab, that is roughly 10 to 12 foot panels. The cuts go in within about 12 hours of the pour, before the slab cracks on its own.
Reinforcement is sized for the load. Light residential floors take fiber mesh or light steel mat. Heavier loads, equipment yards, or driveways that see trucks, get heavier rebar mat or post-tension. Edges get thickened where loads concentrate or where the slab meets a wall.
Timelines for concrete work
A small flatwork job, like a residential equipment pad or a sidewalk, is usually one day on site plus a few days of cure before it carries weight. A house slab takes a day to set forms, a day to pour, and the rest of the cure happens while the framer is getting ready. A shop slab runs two to three days plus cure depending on size. We give you a realistic schedule that accounts for the pour, the finish, and what comes after.
What you should expect when we leave
A flat slab. Joints cut in clean lines. Edges finished. No spalling, no scaling, no bird baths in the surface. A pour you can stand in front of and be proud of. Concrete that holds up to what you intend to put on it for the long haul, because the dirt under it was prepped right and the pour was done right.
Common questions about concrete slabs & flatwork
How thick should a residential house slab be?
Most residential slabs in this area are four inches thick with thickened edges and perimeter beams. Garage slabs go five or six inches. Shop slabs with truck traffic go six to eight. The plans or the engineer set it for your specific load.
How long before I can drive on a new concrete driveway?
For passenger cars, a week is the usual guidance. For trucks and heavier vehicles, give it at least two weeks and longer if the weather has been cool. The slab keeps gaining strength for a month after the pour.
Will my slab crack?
All concrete cracks eventually. The point of control joints is to put those cracks where you want them, in straight saw cuts, instead of letting random cracks run across the slab. Done right, the visible cracks are in the joints and the slab still performs.
Do you pour in the summer heat?
Yes, with adjustments. We start early, time the pour to the temperature, use curing compounds or wet cure, and avoid pouring in the middle of a 95-degree windy afternoon if we can. Heat and wind pull water out of the mix and ruin the finish.
Can you pour a slab on a pad somebody else built?
We can, but we will walk it first and tell you straight whether it is ready. If the pad was not built right, we will not put our concrete on it and let you blame us for the cracks two years later. We will fix the pad first or refer you to whoever did the dirt.
Scotty comes out, walks the property, and gives you a straight quote. Call (337) 288-3795 or send a message.