Every epoxy garage floor in the Triad is priced after a free on-site visit, because five things set the number: the size of the space, the condition of a 35-to-40-year-old slab, whether the concrete is holding moisture, the system and finish you choose, and how much prep the surface needs. Solid-color epoxy usually costs the least, flake sits in the middle, and metallic and quartz systems cost the most.
This guide walks through each of those, so the written quote from your estimate visit makes sense line by line. No installer can give you a firm number without standing on your slab. If you want a range for your own garage before you talk to anyone, the Floor Studio visualizer lets you pick a size, finish and color and shows a typical range in about a minute. For what the full system involves, start with our garage floor coating page.
This guide is written for the Triad homeowner whose house went up in the late 1980s on a crawlspace. On that house the garage is usually the one big slab-on-grade surface, and after decades of hot tires, oil drips and tracked-in winter brine it's stained, pitted and sometimes flaking at the surface. That slab, more than the finish you pick, is the whole cost story.
How the system and finish affect the cost
"Epoxy" is shorthand for a family of coating systems, and the system you choose is the first lever on price. Here is how the common finishes compare, from the simplest to the most labor-heavy.
| Finish | What it is | How it affects the price |
|---|---|---|
| Solid-color epoxy | One uniform color, easy to sweep | The simplest system, usually the lowest cost |
| Flake with polyaspartic topcoat | Chips that hide tire marks and dust, under a UV-stable topcoat | What most garages get; a middle option |
| Metallic epoxy | A labor-heavy decorative finish | Costs more, and climbs with the complexity of the design |
| Quartz broadcast | A heavy-duty broadcast system | Costs more, and climbs with the thickness of the broadcast |
Solid color is the utility choice: one uniform color, easy to sweep, no decorative premium. Flake is what goes on most garages because the chips hide tire marks and dust and add grip, and the polyaspartic topcoat over the flake is what gives the floor its UV stability and chemical resistance. Metallic and quartz are labor-heavy decorative or heavy-duty systems, and their totals climb with the complexity of the design or the thickness of the broadcast.
Common add-ons
| Line item | How it is priced |
|---|---|
| Crack and spall repair | on the written quote after we see the slab; more on a badly spalled slab |
| Moisture-mitigation primer (only if the moisture test calls for it) | per square foot, on the written quote |
| Extra grinding to remove an old sealer, paint or a failed DIY kit | priced on the estimate visit |
| Cove base up the stem wall, steps and landings | priced per linear foot on the estimate |
Size: what a two-car garage involves
A typical two-car garage is about 400 to 500 square feet, and size is the starting point of every quote. A slab in good shape with a standard flake blend needs the least extra work. A slab that needs crack repair, heavy grinding or a moisture primer, or a premium blend under a thicker topcoat, costs more. Solid-color epoxy on the same garage costs less than flake, and a metallic or quartz system costs more, depending on the design.
See a typical range for your own garage in about a minute.
Pick your garage size, a finish and a color. Floor Studio shows a sample render and a typical Triad price range before you ever pick up the phone.
Two things move the total more than the finish: how much prep your slab needs, and whether the concrete is holding moisture. On a garage poured in the 1980s both come up more often than a national calculator assumes, so they get their own section.
What drives the price on a 1980s Triad slab
Slab age
The median home in Greensboro was built in 1987, in Winston-Salem in 1984 and in High Point in 1990, according to the latest Census estimates, which makes the typical garage slab 35 to 40 years old. Concrete that age has absorbed decades of oil, tire rubber and de-icing salt, and it usually shows some pitting, hairline cracking and surface wear. None of that rules out a coating. It just means more prep hours, and prep is where the price moves.
Diamond grinding
Every floor we coat is diamond-ground, not acid-etched. Grinding opens the concrete so the base coat can bond, strips old sealers and paint, and levels light spalling, and it's part of every quote. What adds time is a slab with a previous coating on it, especially a failed big-box kit that has to come off completely before anything new goes down.
Crack and spall repair
Hairline cracks and control joints are filled with a crack-repair compound and ground flush, and pitted or spalled areas are patched the same way. Repair is priced on your written quote after we see the slab. A slab that has scaled badly over a large area may need a full skim coat before coating, and that's quoted separately after we see it. If your floor is already flaking, our repair and resurfacing page covers what that work involves.
Moisture testing and mitigation
We take a free moisture reading at the estimate visit and run the full slab-moisture test before any coating goes down. A moisture-mitigation primer is priced on your written quote up front and goes down first if the test calls for it. A coating is not a vapor or radon barrier and we won't sell it as one; the primer is there so the coating stays bonded. A 1987 pour may have gone in without a vapor retarder, and you can't see that from the surface, so every slab gets the test instead of a guess.
Winter brine and scaling
NCDOT treats Triad highways with a 23 percent salt brine 24 to 48 hours ahead of a storm and spreads rock salt and sand after plowing, and the City of Greensboro pre-treats its priority routes, including Wendover Avenue, Battleground Avenue and Gate City Boulevard. Your tires carry that slush into the garage, where chlorides plus freeze-and-thaw cycles cause the surface flaking that concrete engineers call scaling. Winters here are mild, with a normal snowfall of 7.1 inches, but a scaled surface still means extra grinding and sometimes a skim coat before the coating goes down. The polyaspartic topcoat is what protects the finished floor from the road brine and rock salt that ride in on tires after the next ice storm.
Summer timing
Greensboro's muggy season runs from late May to late September, and July averages around 70 percent humidity with roughly 33 days a year at 90 degrees or above. Humidity doesn't change the price, but it changes the schedule. A coating can't go down when the slab is close to the dew point, so summer installs start early in the morning and are timed to the slab, not the clock. If an installer promises a mid-afternoon July start without asking about the slab, ask why.
Why online averages don't fit your garage
You'll see cost figures online from contractor marketplaces and national cost guides. A marketplace average doesn't publish how it's built, and national ranges are wide enough to be true almost anywhere, so neither one knows your slab. What changes the number on a real quote is whether it includes a diamond grind, a moisture test and a polyaspartic topcoat, which is what a floor needs to last on an old slab. Every garage quote we write includes all three.
What every Ascent Epoxy Greensboro quote includes
We're newly serving the Triad, so we'd rather show you the process and the paperwork than ask you to take our word for it. Every garage quote covers the same six steps: slab-moisture test, diamond grind, crack and spall repair, base coat, flake or solid color, and a UV-stable polyaspartic topcoat. Most two-car garages are one day on site, and before we start you get the walk-on and drive-on times for your exact system in writing.
The warranty is a transferable 25-year written document covering delamination, peeling, cracking and adhesion, and you can read it before you sign. Blake leads the crew that will be on your floor, and you'll know his name before the estimate visit. Estimates are free, Monday through Saturday, and every call or form gets a callback the same business day.
Want a number for your slab, not an average?
Tell us about your garage and we'll schedule a free estimate visit with the moisture meter and the warranty document in hand.
How to compare quotes line by line
A dollar-per-foot figure means nothing if it quietly leaves out the work that makes an old slab hold a coating. Before you compare estimates, check that each one spells out the same six things:
- The moisture test is named. If a quote doesn't mention testing the slab, ask.
- The prep method is in writing, and it says diamond grind, not acid etch.
- Crack and spall repair is in scope, not an add-on discovered on install day.
- The system is complete: base coat, decorative layer and a UV-stable polyaspartic topcoat. One roll-on coat is not a system.
- The warranty exists as a document you can read, with what it covers and what voids it. A "lifetime" promise with no paperwork means whatever the installer decides it means later.
- You compare the all-in total, not the per-foot headline.
When one estimate lands far below the rest, the gap is almost always missing work: no test, an acid wash instead of a grind, a thin consumer-grade resin and no real topcoat. Those omissions save money for about a year and then cost the whole floor.
Frequently asked questions
How much does it cost to epoxy a 2-car garage in Greensboro?
Every two-car garage is priced after a free on-site visit, because the price depends on the size of the space (usually 400 to 500 square feet), the condition of the slab (cracks, old coatings, moisture), the system and finish you choose, and the prep the concrete needs. Call (336) 358-6309 or request a free estimate for an exact written price, with no obligation.
Does a crawlspace house change the price of a garage floor coating?
No. Even when the house sits on a crawlspace, the garage floor is poured concrete on grade, so it takes a coating the same way any slab does. The price is driven by the slab's condition, its size and the finish you choose, not by the foundation under the rest of the house.
Will a 1980s slab cost more to coat than a newer one?
Often a little. An older slab usually needs more grinding and some crack or spall repair, and occasionally a moisture-mitigation primer if the moisture test calls for it; each of those is priced on your written quote before work starts. A slab that has scaled badly may also need a skim coat, which is quoted after we see it.
Is a DIY epoxy kit cheaper than a professional garage floor?
Up front, yes. A big-box kit is a thin, water-based coating with no grinding, no moisture test and no UV-stable topcoat, so it tends to peel under hot tires and lift where the slab holds moisture. When it fails, the old coating has to be ground off before a proper system can go down, which adds to the cost of the eventual professional floor.
Preview your floor, then get a real number
A real number needs someone on your slab with a moisture meter. Try the Floor Studio to preview a finish in about a minute, then request a free estimate online or call (336) 358-6309 and we'll set up a visit. Estimates are free across Greensboro, High Point, Winston-Salem, Kernersville and the rest of the Triad.
Written by the Ascent Epoxy Greensboro team. Pictured: our install crew lead. Every job is priced after a free on-site look at the slab.
