Polyaspartic Floor Cost in Sumter, SC (2026)

If you’ve been staring at a stained or flaking garage floor and wondering what a polyaspartic coating would run, you’re not alone. The bigger worry is usually paying good money for a floor that peels in a year. This guide covers the polyaspartic floor cost ranges published by national and South Carolina sources, what pushes a quote up or down, and why prep work matters more than the product. It comes from Sumter Epoxy Floors, a floor coating specialist based in Sumter County.

What Does a Polyaspartic Garage Floor Cost?

Published figures for a professionally installed polyaspartic-type garage coating start around $4,000 for a standard two-car garage, according to The Home Depot’s Garage Floor Coating Cost Guide (2026). That is an average, not a quote, and your slab, size and finish will move it.

For a local reference point, a Lexington, SC installer publishes garage floor price bands of $1,500 to $2,500 (base), $2,500 to $4,000 (average) and $4,000 to $8,000 (high-end), per Midlands Pro Painters’ Garage Flooring Prices page. Those bands cover garage flooring in general, so treat them as a rough guide to the Midlands market rather than a polyaspartic price list.

Epoxy gives a useful comparison. Epoxy flooring typically costs $2 to $12 per square foot installed, materials and labor included (Angi, updated Aug 3, 2026). For a two-car garage of about 500 square feet, Angi puts epoxy at $1,500 to $6,000. Polyaspartic pricing generally sits toward the upper part of the coating range, but the only way to get a number for your floor is a written quote after someone has looked at the concrete.

Why Two Quotes for the Same Garage Can Differ

Square footage is only the starting point. The items below are what usually separate a low quote from a high one.

Concrete condition. Intermountain Coatings (July 2025) lists basic cleaning and etching at about $1 to $2 per square foot, diamond grinding for damaged concrete at about $2 to $4, and crack repair and patching at about $3 to $5. A floor with oil stains, old paint and hairline cracks costs more to prepare than a clean, sound one.

The system itself. Metallic and decorative finishes cost more than a solid color. Intermountain Coatings puts metallic epoxy at about $8 to $15 per square foot, against $3 to $7 for water-based epoxy.

Who does the work. Professional installation is a different product from a kit. ArmorGarage (2026) cites $7 to $9 per square foot professionally, against $1.08 to $2.66 for DIY kits. The gap is mostly grinding equipment, commercial-grade material and labor.

If a quote is far below the others, ask what prep it includes. A cheap number often means the grinding step was skipped.

Prep and Moisture: Where Peeling Starts

Most coating failures trace back to the slab, not the coating. Here is how prep typically goes, step by step:

1. Clear the garage and check the concrete for oil, old sealer and cracks.
2. Diamond grind the surface so the coating has something to grip.
3. Repair cracks and chips, then vacuum off the dust.
4. Test moisture where the slab calls for it.
5. Apply the coating system and let it cure before traffic.

Moisture deserves extra attention in Sumter. Summers are humid, with average highs of 87.3°F in June, 90.2°F in July and 88.5°F in August (Wikipedia, Sumter, South Carolina). Concrete can hold moisture even when the surface looks dry. Concrete Network notes that polyaspartic coatings should not go on a slab with a high moisture vapor emission rate, because moisture can make the coating bubble and lift.

Testing methods differ. The ASTM F2170 in-situ relative humidity test places probes at about 40 percent of slab depth for slabs that dry from one side (Wikipedia, Epoxy moisture control system). The ASTM F1869 calcium chloride test only measures the top quarter inch of the slab, so it can miss deeper moisture (Construction Canada). Typical epoxy coatings call for slab relative humidity of 75 percent or lower, but the coating maker’s data sheet sets the real limit for each product (One Stop Epoxy). Ask which test is used and which limit applies to the product on your quote.

How to Compare Quotes Fairly

Ask each contractor for the same things in writing: the square footage, the prep method, whether moisture testing is included, the product name, and how crack repair is handled. Then compare like with like.

On lifespan, installers describe polyaspartic coatings as UV stable and as lasting 15 to 25 years with care, but Concrete Network notes these are manufacturer and installer claims, not independent test results. Weigh them that way.

If a project passes $5,000, South Carolina regulation 106-2 requires a licensed residential specialty contractor to hold a surety bond of at least $10,000 (SC Code of Regulations ch. 106). Licensing rules can change and depend on the job, so check with the South Carolina Residential Builders Commission or the official state source before signing anything.

Our polyaspartic garage floor coating page explains the system itself, and we serve Sumter, Shaw AFB area homes, and nearby towns along US 15, US 76/378 and SC 441.

Key Takeaways

• A professionally installed polyaspartic-type coating averages around $4,000 for a two-car garage (The Home Depot, 2026).
• Prep for damaged concrete can add roughly $1 to $5 per square foot (Intermountain Coatings, July 2025).
• Humid summers make moisture checks worthwhile before coating a slab.
• Compare written quotes line by line, especially prep and testing.
• Lifespan claims come from manufacturers and installers, so treat them as claims.

Get Your Number in Writing

For a price based on your actual concrete, Get a Free Estimate from Sumter Epoxy Floors. We’ll look at the slab on site and give you a written quote. You can also call (839) 600-9293.