Epoxy Calculator
423 Epoxy Pros provides the installed price ranges this calculator runs on, measured across Johnson City and the Tri-Cities. Enter your floor dimensions below for square footage, how much coating the job needs, and an installed price range by system. No email, nothing gated.
Square footage
440 sq ft
Coating needed
3.5 gal
Installed range
$2,200–$4,400
A planning range, not a quote. It assumes normal diamond-grind prep on a sound slab. Structural repair, moisture mitigation, or grinding off a failed previous coating are quoted separately once the floor has been seen. Coverage of 125 sq ft per mixed gallon is a working figure for a two-coat build plus topcoat — the product datasheet governs.
Per-square-foot pricing by system
These are the installed rates the calculator uses. They are the same numbers published in the Tri-Cities epoxy flooring cost guide, which explains what moves a job within its range.
- Solid-color epoxy — $4 – $7 per square foot. Single pigmented color, utilitarian. Cheapest professional option; shows tire marks and dust more than flake.
- Flake (chip) epoxy — $5 – $10 per square foot. The value sweet spot for Tri-Cities garages. Vinyl flake broadcast hides dust, minor concrete flaws, and tire tracking.
- Polyaspartic system — $7 – $14 per square foot. Faster cure, UV-stable, longer service life. Roughly 30 to 50 percent more than a comparable epoxy install.
- Metallic epoxy — $9 – $16 per square foot. The decorative tier: hand-worked 3D marbled finish. Premium pays for artisan labor and high-pigment material.
Typical garage footprints
If you have not measured yet, these are the ranges most Tri-Cities garages fall into. Measure the slab rather than the building — the coating stops at the walls, and the door threshold is usually the shortest dimension.
- 1-car garage — 240 to 300 square feet.
- 2-car garage — 400 to 500 square feet.
- 3-car garage — 600 to 750 square feet.
Frequently asked questions
- How much epoxy do I need for a 2-car garage?
- A typical 2-car garage is 400 to 500 square feet. At roughly 125 square feet per mixed gallon for a professional two-coat build plus topcoat, that is about 3.5 to 4 gallons. Always check the product datasheet — coverage varies by system, film thickness, and how porous the slab is.
- How accurate is this calculator?
- It gives a planning range, not a quote. The two things it cannot see are the condition of your slab and how much prep it needs — a floor with a failing coating to grind off, or with cracks and spalling to repair, lands at the top of the range or above it. An on-site look is what turns a range into a number.
- Does the price include concrete prep?
- The ranges assume normal diamond-grind preparation on a sound slab, which is included in every install. They do not include structural repair, moisture mitigation, or removing a failed previous coating. Those are quoted separately once the slab has been seen — see concrete repair and prep.
Ready for a real number instead of a range? Call (423) 900-8254 or request a free on-site quote.
Thinking about coating your garage or shop floor?
Get a free, itemized on-site quote anywhere in Johnson City, Kingsport, Bristol, or the surrounding Tri-Cities.