Concrete Slabs & Foundations in Fort Worth, TX

A standard concrete slab or foundation pad runs $5 to $12 per square foot in the North Fort Worth area, with the low end covering a simple 4-inch shed or AC pad and the higher end covering thicker, heavier-reinforced garage and shop slabs. A typical 10-by-12 shed pad lands well under $1,000, while a two-car garage slab at 400 to 600 square feet runs several thousand once base prep, rebar, and finishing are included. Price moves with thickness, reinforcement type, and whether the subgrade needs extra compaction or a vapor barrier. We quote in writing before scheduling, so the number doesn't change once the forms are set.

A shed or AC pad typically runs about 4 inches of 3,000 psi concrete, which is enough for light equipment loads on a small footprint. A garage or shop slab needs more, usually 4 to 6 inches of 3,500 to 4,000 psi air-entrained concrete, thicker still if it's carrying a vehicle lift or heavy shop equipment. RV pads and equipment pads for larger machinery often step up to 6 inches or more with heavier wire mesh or rebar sized to the point loads involved. We spec thickness based on what's actually going on the slab, not a single default poured everywhere.

Most residential slabs get either rebar or welded wire mesh, tied and set on chairs at the correct depth so it sits in the middle of the pour rather than resting on the ground. Fiber reinforcement is often added on top of mesh or rebar for extra crack resistance, especially on slabs with a lot of surface area like a shop floor. Which combination we use depends on the slab's thickness, its span, and the load it carries — a shed pad needs less than a garage slab built to hold a vehicle lift. Skipping reinforcement entirely on anything but the smallest pad is how a slab ends up cracking and settling unevenly on North Texas clay.

A vapor barrier is a layer of poly sheeting placed under the gravel base and slab to stop ground moisture from wicking up through the concrete once it's poured. It matters most under garage slabs, shop floors, and any pad that will carry finished living or storage space above, since trapped moisture can damage flooring, stored goods, or equipment set directly on the slab. Outdoor pads like sheds, AC condensers, and open patios generally don't need one, since moisture simply evaporates off an exposed surface. We spec a vapor barrier based on what the slab will be used for, not as a blanket upcharge on every job.

New concrete slabs are safe for foot traffic in about 24 to 48 hours and can handle vehicle traffic or parking at roughly the 7-day mark, though full design strength — the 3,000 to 4,000 psi the mix is specified for — isn't reached until 28 days. If you're building a shed or structure on top of the pad, we recommend waiting for that full 28-day cure before framing begins, since the slab is still gaining strength through the first month. Cold weather below about 50 degrees slows every one of these timelines down, which we factor into scheduling on winter pours.

It depends on the existing slab's condition — if it's structurally sound with no major cracking or settlement, a new pour or overlay can sometimes go on top, though this is more common on decorative work than on structural pads. If the existing slab has cracked, heaved, or settled from clay movement underneath it, pouring over it just repeats the same problem at a higher elevation, so we recommend removal and a proper subgrade rebuild instead. Our [concrete repair](/concrete-repair) page covers crack and leveling assessment if you're not sure which category your existing slab falls into. We inspect before quoting either approach rather than defaulting to whichever is faster.

Control joints are tooled or saw-cut into the surface within about 6 to 18 hours of the pour, spaced based on the slab's thickness and dimensions so shrinkage cracking follows a straight, planned line instead of cracking randomly through the middle of the pad. A typical 4-inch slab gets joints spaced roughly 10 to 12 feet apart, tighter on thinner or more exposed pours. Skipping joints, or cutting them too late after the concrete has already started shrinking, is one of the most common reasons a slab develops an unplanned crack in its first year. We plan joint layout before the pour, not as an afterthought once the concrete is curing.

Haltom City, North Richland Hills, and Watauga all sit on high-plasticity black gumbo clay that swells when wet and shrinks hard through the long dry summer, moving several inches seasonally underneath anything poured on top of it. A slab poured without proper subgrade compaction, base material, and reinforcement will telegraph that movement as heaving, cracking, or an uneven corner within a year or two, especially on an isolated pad like a shed or hot-tub slab that lacks a house foundation's depth to anchor it. Proper compaction, a gravel base, and correctly sized reinforcement are what actually resist that movement, not a thicker pour alone.

A slab is a flat, poured pad sitting at or near grade — a shed pad, garage floor, or patio are all slabs. A footing is a wider, often deeper concrete base poured below the frost or movement zone that spreads a structure's load into stable soil, commonly used under foundation walls, posts, or heavier structures. A foundation wall is a poured or block vertical wall built on a footing to support a structure above grade, common under additions rather than a simple slab-on-grade shed or garage pad. Most residential accessory pads — sheds, AC units, hot tubs — only need a properly reinforced slab, not footings or walls, unless the structure above is unusually heavy.

Each of the three cities runs its own building and permitting department rather than routing through Tarrant County, and slab work tied to a permanent structure — a garage, shop, or attached addition — typically requires a permit in all three. Smaller accessory pads like a shed base, AC pad, or hot-tub slab sometimes fall under a lower threshold depending on square footage and whether a structure is being built on top, so requirements vary by address and by what's going on the pad. We confirm what applies to your specific project and city before pouring, so a slab never turns into a compliance problem after the fact.