How much does a concrete garage floor cost in St. George, Utah?

Garage floor slabs in St. George typically run $6–$10 per square foot installed. A standard 2-car garage (20x22 ft, 440 sq ft) runs roughly $2,640–$4,400. Larger 3-car garages or shop floors with thicker specs cost more. Call 801-640-1788 for a free on-site estimate.

St. George, Utah · Licensed & Insured

Concrete Slabs & Garage Floors in St. George, Utah

Garage floors, workshop slabs, shed pads, and ADU foundations. Poured flat, level, and reinforced right — built for St. George's climate.

📞 Free Estimate See Slab Types

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4–6″

Thickness options — residential to heavy-duty

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Rebar

Grid reinforcement on all commercial-grade pours

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1 Day

Most slabs poured and finished in a single pour

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30+ yrs

Service life of a properly poured concrete slab

Why It Matters

Not All Slabs Are Equal

A concrete slab is only as good as what goes into it — the mix, the thickness, the reinforcement, and the finish. In St. George's climate, where temperatures swing from 100°F summers to freezing winters, shortcuts show up fast: cracking, spalling, heaving.

We don't cut corners on mix design or reinforcement. Every slab we pour starts with proper subgrade prep, the right PSI mix for the application, and control joints placed to manage cracking predictably rather than letting it happen randomly.

Whether you need a basic 400 sq ft shed pad or a 1,200 sq ft workshop floor with drain trenches and heavy-equipment loading, we spec and pour it right the first time.

Factor	Concrete	Asphalt	Gravel
Load Capacity	Excellent	Good	Fair
Lifespan	30–50 yrs	15–25 yrs	Ongoing maint.
Maintenance	Minimal	Seal every 3–5 yr	Re-grade regularly
Surface Cleanliness	Easy to sweep	Tracks tar	Tracks rocks
Heat Resistance	Very good	Softens in heat	N/A
Finishes Available	Many	Few	None

What We Pour

Concrete Slab Types

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Garage Floors

Single, double, and triple-car garage floors. Smooth trowel finish ready for epoxy coating or bare use. Control joints placed to manage cracking predictably.

Typical size: 20×20 ft to 30×40 ft · Thickness: 4–5″

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Shop & Workshop Floors

Heavy-duty floors for mechanic shops, woodworking shops, and home workshops. Rebar reinforced, higher PSI mix, optional floor drain provisions.

Typical size: 400–1,200 sq ft · Thickness: 5–6″

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Shed & Storage Pads

Level, stable pads for outbuildings, storage sheds, and prefab structures. Keeps your shed off the dirt and prevents shifting over time.

Typical size: 10×12 ft to 16×20 ft · Thickness: 4″

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ADU & Casita Slabs

Monolithic slab foundations for accessory dwelling units and casitas. Sized to your building plans and poured to engineering specs when required.

Typical size: 400–800 sq ft · Thickness: 4–6″ + footings

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Man Cave & Bonus Rooms

Interior-grade slabs for converted garage spaces, man caves, and bonus room additions. Smooth finish, level, and vapor barrier ready.

Typical size: 400–800 sq ft · Thickness: 4″

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Equipment Pads

Pads for HVAC units, generators, pool equipment, and heavy machinery. Sized and reinforced for static load requirements.

Typical size: 4×8 ft to 20×20 ft · Thickness: 4–6″

Built to Last

Reinforcement Matters

Concrete is strong in compression but weak in tension — reinforcement is what keeps slabs from cracking apart when the ground shifts or loads get heavy. We size the reinforcement to the job, not to the cheapest bid.

For standard garage floors we use welded wire fabric. For shop floors, heavy vehicle storage, or any slab with point loads over 10,000 lbs, we step up to rebar — #4 on 18-inch centers minimum.

Slab Use	Thickness	Reinforcement
Shed / Storage Pad	4″	Fiber or WWF
Residential Garage	4″	Wire mesh (WWF)
Workshop / Shop Floor	5″	#4 Rebar 18″ o.c.
RV / Boat Storage	5–6″	#4 Rebar 18″ o.c.
Heavy Equipment	6″+	#5 Rebar 12″ o.c.
ADU Foundation Slab	4–6″ + footings	Engineer-specified

How It Works

From Estimate to Finished Slab

Free Estimate

We measure the area, assess the subgrade, and give you a firm price — not a range.

Prep & Subgrade

Excavate, compact base material, set forms, and lay reinforcement to spec.

Pour & Finish

Ready-mix concrete delivered and poured. Screeded level, finished to spec, control joints cut.

Cure & Hand Off

Curing compound applied. Walk-on in 24 hrs, drive on in 7 days, full strength at 28 days.

Common Questions

Concrete Slab FAQs

Garage floor slabs in St. George typically run $6–$10 per square foot installed. A standard 2-car garage (20×22 ft, 440 sq ft) runs roughly $2,640–$4,400. Larger 3-car garages or shop floors with thicker specs cost more. Call 801-640-1788 for a free on-site estimate.

A standard residential garage floor is 4 inches thick with wire mesh or rebar. For workshops, heavy equipment, or vehicles over 10,000 lbs, we recommend 5–6 inches with #4 rebar on 18-inch centers. Thicker slabs cost more upfront but last significantly longer under heavy use.

A smooth steel-trowel finish is standard for garage floors — it's easy to sweep and works well under epoxy coatings. For workshops where oil spills are common, a medium broom finish provides better grip. Exposed aggregate is an option for outdoor slabs and detached garages.

Both reinforce the concrete, but rebar is superior for crack control under heavy loads. Wire mesh (welded wire fabric) is cheaper and common in residential garages. For shop floors, RV storage, or slabs that will see forklifts or heavy equipment, we always use rebar. Fiber reinforcement is sometimes added to the mix as a secondary measure.

Technically yes, but it's usually not recommended. Pouring over an existing slab raises your floor height, may create threshold clearance issues, and won't fix any underlying settling or drainage problems. In most cases we recommend removing the old slab and starting fresh. We can evaluate your existing slab and give you an honest recommendation.

Most residential garage slabs and shed pads are poured and finished in a single day. Larger shop floors or complex pours with multiple control joints may take two days. You can walk on the concrete after 24–48 hours and park vehicles on it after 7 days. Full design strength is reached at 28 days.

Beyond slabs and garage floors, we pour concrete driveways, patios, stamped concrete, and RV pads across St. George and Washington County. Call 801-640-1788 for a free estimate on any concrete project.