The floor coverage calculator turns square feet, coats, and your kit's coverage rate into gallons and kits to buy.
Epoxy Garage Floor Cost Calculator
In the U.S., professional garage floor epoxy typically costs $4 – $10 per sq ft installed, or $1,600 – $4,000 for a 400 sq ft two-car garage with concrete in good condition. Enter your floor size, coating system, and slab condition to estimate your total.
Estimate your floor cost
Example inputs
Default dimensions, allowances and prices are example inputs. Replace them with your measurements and product label. Leave unknown product limits blank.
Estimated cost
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Enter the floor size to see an installed price range.
- Price per sq ft
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- High estimate
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- Prep & repairs
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- Coating
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- DIY vs pro
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- Low estimate
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- Other system
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Cost Breakdown
What makes up the estimate
- Enter the floor size to see the coating, prep, and repair costs.
Next Step
Compare two or three itemized quotes
Use the range to check quotes. Ask how the concrete will be prepared, how many coats go down, and what the warranty covers.
Epoxy garage floor cost by garage size
Professional prices in the table include materials and labor. DIY kits cost $0.50 to $2.70 per square foot in materials, plus tools and prep. Use the two-car garage coverage calculator to estimate how many kits to buy.
| Garage | Area | DIY kit (materials) | Pro epoxy | Pro metallic | Pro polyaspartic |
|---|---|---|---|---|---|
| 1-car (12 × 24 ft) | 288 sq ft | $144 – $778 | $1,152 – $2,880 | $1,440 – $3,456 | $1,440 – $3,456 |
| 2-car (20 × 20 ft) | 400 sq ft | $200 – $1,080 | $1,600 – $4,000 | $2,000 – $4,800 | $2,000 – $4,800 |
| 2-car (24 × 24 ft) | 576 sq ft | $288 – $1,555 | $2,304 – $5,760 | $2,880 – $6,912 | $2,880 – $6,912 |
| 3-car (24 × 36 ft) | 864 sq ft | $432 – $2,333 | $3,456 – $8,640 | $4,320 – $10,368 | $4,320 – $10,368 |
U.S. national averages for a floor in good condition, compiled October 3, 2026 from HomeGuide, Angi, This Old House, and Bob Vila. High-cost metros land near the top of each range.
Epoxy floor cost per square foot by coating system
Professional prices include materials and labor. DIY prices are kit materials only. Choosing between coatings? Our polyaspartic vs epoxy comparison covers cure time, yellowing, and working time.
| Coating system | DIY materials | Professional installed | Typical lifespan |
|---|---|---|---|
| Epoxy, solid color or flake | $0.50 – $2.70 | $4 – $10 | 3 – 20 years |
| Metallic epoxy | About $2.70 (kit list price) | $5 – $12 | Similar to epoxy |
| Polyaspartic / polyurea with flake | Rarely sold as a DIY kit | $5 – $12 | 10 – 20+ years |
Lifespans from HomeGuide (2026). Water-based DIY coatings sit at the short end and may need recoating within a few years.
What adds to the price
| Item | Typical cost | Source |
|---|---|---|
| Patching cracks and chips | $25 – $250 per job | Angi 2026, This Old House 2026 |
| Vapor barrier for a damp slab | About +$1 per sq ft | Installer quoted by Bob Vila (2024) |
| Resurfacing a badly damaged slab | $3 – $7 per sq ft | HomeGuide 2026 |
| Power washing | $0.35 – $0.77 per sq ft | HomeGuide 2026 |
| Floor grinder rental (DIY, old coating or sealer) | $100 – $200 per day | ArmorGarage 2026 |
| Contractor minimum charge | $500 – $1,000 per job | Bob Vila 2024 |
Small floors cost more per square foot because setup and minimum labor do not shrink: Homewyse's 120 sq ft example works out to about $8 – $13 per sq ft (September 2026).
DIY kit or professional install?
For a 400 sq ft two-car garage, DIY kits run about $200 – $1,080 in materials, while a professional epoxy floor runs $1,600 – $4,000. Labor is roughly 33% to 60% of a professional job (Angi, 2026), and most of that time goes into grinding and repairing the slab.
- DIY makes sense on a dry, sound slab with no old coating, when you can keep the garage empty for two to three days. How to epoxy a garage floor walks through the full job.
- Hire a pro when the slab is damp, has an old coating or sealer, needs real crack repair, or when you want metallic or polyaspartic finishes.
- Diamond grinding bonds better than acid etching. Pros grind as standard; DIYers rent a grinder for old or sealed floors.
- Before buying a kit, tape a plastic sheet to the slab for 24 hours. Condensation under it means you need a vapor barrier. Basements need extra care, as our basement epoxy floor cost guide explains.
How to check an epoxy floor quote
- Price per square foot: does it fall inside the range for the system quoted? Very low bids often skip grinding or use a thin water-based coat.
- Surface prep: diamond grinding or shot blasting, not just a wash and acid etch.
- Coats and topcoat: how many coats, how thick, and whether the topcoat is polyaspartic or polyurethane.
- Repairs and moisture: are crack repair and a moisture test included, or priced as extras?
- Cure time: how long before you can walk on it and before you can park on it.
- Warranty: what it covers (peeling, hot-tire pickup) and for how long.
Sources and method
Ranges are U.S. national averages for materials and labor, compiled October 3, 2026. Where cost guides disagree, the calculator uses the overlap of the most recent neutral guides rather than the extremes. Seller data is used only for kit list prices and equipment rental.
- HomeGuide: Epoxy Flooring Cost (2026)
- HomeGuide: Garage Floor Coating Cost (2026)
- Angi: Epoxy Flooring Cost (updated Aug 3, 2026)
- This Old House: Epoxy Floor Cost (updated Mar 13, 2026)
- Homewyse: Cost to Epoxy Coat Garage Floor (September 2026)
- Bob Vila: Epoxy Garage Floor Cost (updated Apr 26, 2024)
- Bob Vila: Polyaspartic Floor Coating Cost (updated Jan 31, 2024)
- ArmorGarage: Epoxy Flooring Cost per Sq Ft (kit seller, Sep 22, 2026)
How to get an accurate estimate
- Measure the coated floor only: skip the area under cabinets, steps, or built-in storage.
- Pick the system you are actually comparing. Flake and solid-color epoxy share one price band.
- Set the floor condition honestly. Cracks, moisture, and old coatings change the price more than the coating choice does.
- Use the result to sanity-check quotes, not to replace them.
Mistakes that make quotes look wrong
- Comparing a DIY kit price (materials only) with a professional quote (materials and labor).
- Skipping a moisture check on a basement or slab-on-grade garage.
- Choosing the lowest bid without asking how the concrete will be prepared.
FAQ
Epoxy floor cost questions
How much does it cost to epoxy a 2-car garage?
About $1,600 – $4,000 for a 400 sq ft (20 × 20 ft) garage with professional epoxy, and $2,304 – $5,760 for a 576 sq ft (24 × 24 ft) garage. DIY kits cost about $200 – $1,080 and $288 – $1,555 in materials for the same sizes.
Why are epoxy floor quotes so different?
Quotes differ mainly in surface prep, the number and thickness of coats, the topcoat, repairs, and local labor rates. A low bid that skips diamond grinding or uses a thin water-based coat is not comparable to a full-build flake system with a polyaspartic topcoat.
How long does an epoxy garage floor last?
HomeGuide rates epoxy floors at 3 to 20 years and polyurea or polyaspartic coatings at 10 to 20+ years. Thin water-based DIY coatings sit at the short end; ground, multi-coat systems sit at the long end.
Does a basement floor cost the same as a garage floor?
Per square foot, yes, for the same system. Basements are more likely to need a vapor barrier for moisture, which adds about $1 per square foot, and they often have more corners and edges to cut in.
Related Pages
Related calculators and guides
How much epoxy a garage or basement floor needs: turn square feet, coats, and your kit's coverage rate into gallons and kits to buy, with waste and material cost.
How many pounds of flake for an epoxy floor: about 12.5 lb per 100 sq ft for a full broadcast of 1/4 in chips. Full or partial broadcast, flake size, and boxes to buy.
Estimate epoxy quantity and material cost for a two-car garage floor using square footage, coat count, coverage rate, and waste.
Polyaspartic costs $5 – $12 per sq ft installed against $4 – $10 for epoxy. Compare cure time, yellowing, working time, and which suits your garage.
The real pros and cons of epoxy flooring: how long it lasts, why it peels or yellows, what it costs per year, and when another floor is the better choice.
A basement epoxy floor costs about $4 – $10 per sq ft installed, plus around $1 per sq ft for a vapor barrier. See prices by size and test the slab first.
Epoxy floors run from about 3 dry mils per coat for water-based kits to 1/4 inch for mortar. Thickness by system in mils and mm, wet vs dry film, and what each floor needs.
How thick is epoxy? Typical thickness for garage floors (10-20 mils), tabletops (1/8 inch), and deep pours, plus square feet per gallon at every thickness.
Reviewed · Calculation notes and corrections