A slab is the flat, load-bearing surface everything else sits on: a garage floor, a shed pad, a patio base, the floor of a home addition. We pour residential and commercial slabs in Scottdale, and the part of the job that decides how well it holds up is the part you never see once it is finished. That means the ground under it, the gravel base, the reinforcement set at the right height, and a thickness matched to the load. Get those right and the surface on top has something solid to rest on for years.
Every project starts with the site. We test the soil on each property before any work begins, because ground that behaves well on one lot can act differently a few streets over. From there we set forms, compact the base, place reinforcement, and cut control joints so the slab cracks where we choose rather than where it wants to. Pours are scheduled around the weather. Metro Atlanta sees about 50 inches of rain a year, so we watch the forecast closely and keep fresh concrete protected while it cures.
Most slab failures trace back to a handful of shortcuts: a thin base, soft ground left uncompacted, reinforcement lying on the dirt instead of inside the concrete, and water with nowhere to drain. The cracks and sinking show up later, and by then the fix usually means breaking the slab out and pouring again. Doing it right the first time takes more preparation and a little more material. That preparation is where the money on a slab is best spent. If you have a slab in mind, call for a free estimate.
What a slab costs depends on what sits under it and what it has to carry. Site prep drives most of it: clearing, grading, and compacting a stone base so the slab rests on something firm. Thickness, reinforcement, finish and how close the truck can get all move the number too. We walk the site before pricing anything, and every site is tested before work starts. Call for a free estimate that breaks the cost out line by line.
A driveway fails from the bottom up. Most of the cracked, sunken ones we tear out were poured over soft fill with no real base, so that is where our time goes: excavating, compacting crushed stone, and setting rebar on chairs so it sits mid-slab instead of on the dirt. We thicken the edges where tires roll off, cut control joints before the concrete cracks on its own, and broom the surface for grip.
Basements, garages, workshops and additions all start with a vapor barrier under the slab, because moisture wicking up through bare concrete ruins whatever is laid on top. We pour, then power-trowel for a smooth, dense surface. From there the floor can stay plain, get sealed, or be ground and polished. Garage floors usually get a sealer or epoxy coating so oil and brake fluid wipe off instead of soaking in and staining.
Not every cracked slab needs replacing. Hairline shrinkage cracks are normal, and they can be routed out and sealed to keep water from getting under them. A slab that has sunk or tipped usually has a void beneath it, often from washed-out fill or a downspout dumping at its edge, and it can often be lifted and the void filled. Cracks that keep widening point to a base problem. Patching won't hold. That slab comes out.
Walkways get the same base work as a driveway, scaled to foot traffic. We compact a gravel bed, set forms to a consistent width, and pitch the surface slightly to one side so water runs off instead of standing, which matters in an area that sees about 50 inches of rain a year. Joints go in at regular spacing to decide where cracks form. Broom finish is standard; stamped or exposed-aggregate borders are an option.
A slab is only as good as the ground under it and the steel inside it, and those are the two things nobody sees once the concrete is down. That is where we spend our time. We pour garage floors, shed and workshop pads, patios, and the base under a new addition. We would rather talk you through what your slab actually needs than sell you on a finish. Stamped and decorative surfaces have their place. A plain, well-built slab that stays flat and sheds water for a long time has a bigger one.
Every site gets tested before any work starts, because ground changes from one property to the next and sometimes from one corner of a yard to the other. From there we set grade so water runs away from the building, compact the base in lifts, and lay out reinforcement to suit the load the slab will carry. Rebar or wire sits on chairs in the middle of the pour, not on the dirt where it does nothing. Forms go in square and checked. We pour, finish, cut control joints where the slab wants to crack anyway, and let it cure. Nobody should be driving on fresh concrete because a schedule said so.
Most slab failures trace back to something skipped. A base that was never compacted settles. Missing or poorly placed reinforcement lets a hairline crack open into a gap. A slab poured dead flat, with no fall, holds water against a foundation wall. Fixing any of that means breaking out concrete and starting over, which costs far more than doing the groundwork once. Getting it right takes a little more time at the start, and we think that time is well spent. If you have a slab planned in Scottdale, call us for a free estimate.
Before anything is formed, we walk the property and look at what the slab has to carry: a shed, a hot tub, a car, or just foot traffic. We check where water runs after a storm, where tree roots reach, and how the grade falls across the footprint. Soil varies from lot to lot, so every site is tested individually before work starts. What we find there sets the base, the slab thickness and the reinforcement.
Most slab failures start underneath. We strip sod, topsoil and anything organic down to firm ground, then cut or fill to grade so water sheds away from the house or structure. Crushed stone goes in next, placed in lifts and run over with a plate compactor until it stops moving. Soft spots get dug out and replaced, not covered over. A slab is only as flat and as sound as the base it sits on.
Forms are straight lumber staked tight and set to string lines, with a slight fall built in so rain does not pond on the finished surface. Inside them we lay reinforcement sized to the load: welded wire mesh for light-duty slabs, rebar in a tied grid where vehicles or heavy equipment will sit. The steel rides on chairs so it ends up in the middle of the slab, where it does its work, rather than lying in the gravel.
We order a mix suited to the job and check each truck as it arrives. Concrete goes down in one continuous placement, working from the far corner back toward the chute or pump, so no batch sets before the next one meets it. That is how cold joints form. Rodding and vibrating along the forms settles the mix around the steel. Adding water at the truck to make it spread easier weakens a slab, and we do not do it.
Screeding strikes the concrete level with the forms, then a bull float pushes the stone down and brings cream to the top. Timing matters here. Work the surface while bleed water is still sitting on it and the top turns weak and dusty. Once the sheen is gone we edge the perimeter, cut control joints, and apply the finish: a broom texture for grip, a smooth trowel for a garage floor, or a stamped decorative pattern for patios.
Concrete keeps gaining strength for weeks, and the first several days decide most of it. We keep the surface damp or coated with curing compound so the top does not dry faster than the bottom, which is what causes curling and surface cracks. Average daily highs here run around 72°F, but a warm, windy afternoon can still pull moisture from a fresh slab, so we watch it. Foot traffic comes first. Vehicles wait considerably longer.
This part of metro Atlanta gets about 50 inches of rain a year, and water is what carries dirt, oil and staining into a slab's pores. Once the concrete has cured, we apply a sealer matched to the surface: a breathable penetrating sealer for plain broom-finished work, or an acrylic that deepens the color on stamped and decorative patios. Resealing every few years keeps that protection working. Ask us which sealer fits your slab when you call for a free estimate.
Slab work in Scottdale mostly comes down to a handful of options. A plain broom-finished slab is the workhorse: driveways, garage floors, shed pads and walkways. Stamped concrete starts as the same structural slab, then gets a pattern pressed into the surface while it is still workable, so a patio can read as slate, brick or flagstone. Exposed aggregate strips back the top layer to show the stone underneath and gives good footing on a sloped driveway. Color can go into any of them. On commercial property, load matters more than looks.
Whichever finish you choose, the part nobody sees decides how long it lasts. We test the site first, dig down to firm ground, then lay and compact a gravel base. Reinforcement goes in next, rebar or wire mesh set up on chairs so it sits inside the slab instead of on the dirt below it. Forms are pitched so water runs away from the house. We pour, finish, and cut control joints so the concrete cracks where we want it to. Decorative work adds steps, not shortcuts.
Water causes most of the trouble. The area sees about 50 inches of rain a year, and water that pools against a slab or runs under its edge finds any soft spot in the fill and carries it off. The slab settles, cracks, and tips toward the house. Stamped surfaces have a failure of their own. Skip the sealer, or let it wear through, and the color fades while the pattern holds grime. Joints cut too late or spaced too far apart let the slab crack wherever it likes.
Getting it right costs more under the surface than on it. A deeper base, reinforcement placed where it does its job and a real plan for drainage all add material and labor before any decorative choice is made, and they are the last places we trim. Stamped and colored finishes run higher than a broom finish because they take more crew time and more product, and they need resealing every few years. The right slab depends on what sits on it, how water crosses the property, and how it needs to look. Call for a free estimate.