How Much Does It Cost to Epoxy a 2-Car Garage in Boise?
Garage floor coating prices vary widely, and online numbers can be confusing because they mix DIY kits, basic paint jobs, and full professional systems. This guide focuses on typical installed ranges for professional systems in Boise and the Treasure Valley, with worked examples for the sizes homeowners ask about most. These are estimates to help you budget; your real price comes from an on-site look at your slab.
Typical price per square foot by system
| Coating system | Typical installed range |
|---|---|
| Solid-color epoxy (grind, 2 coats, topcoat) | $3–$6 / sq ft |
| Full-broadcast flake epoxy | $4.50–$8 / sq ft |
| Polyaspartic / polyurea flake system | $5.50–$10 / sq ft |
| Metallic epoxy | $7–$12 / sq ft |
| Heavy crack/spall repair, moisture mitigation | +$1–$3 / sq ft |
What is the average cost to epoxy a 2-car garage floor?
A typical 2-car garage in the Treasure Valley is about 400–480 square feet. With a professional system, that commonly works out to roughly $2,000–$4,000. Solid-color epoxy sits at the lower end, flake epoxy in the middle, and polyaspartic flake systems toward the top. Larger 2.5-car garages, heavy repairs, or coating up the stem walls push the number higher.
For comparison, a 1-car garage around 250 square feet typically runs about $1,200–$2,200, and a 3-car garage of 600–750 square feet about $3,200–$6,500. Smaller jobs cost more per square foot because setup, grinding equipment, and travel are similar no matter the size, and many installers have a minimum job charge.
How much does it cost to epoxy 400 square feet?
A 20x20 floor is 400 square feet. Multiplying the per-square-foot ranges gives the worked examples below. Note that a 24x24 garage is actually 576 square feet, so it is a bigger floor than many people assume.
| System | 400 sq ft (20x20) | 576 sq ft (24x24) | 1,000 sq ft |
|---|---|---|---|
| Solid-color epoxy | $1,200–$2,400 | $1,730–$3,460 | $3,000–$6,000 |
| Flake epoxy | $1,800–$3,200 | $2,590–$4,610 | $4,500–$8,000 |
| Polyaspartic flake | $2,200–$4,000 | $3,170–$5,760 | $5,500–$10,000 |
| Metallic epoxy | $2,800–$4,800 | $4,030–$6,910 | $7,000–$12,000 |
Figures are simple area × typical rate, rounded, before any repair add-ons or minimums. They are budgeting estimates, not quotes.
How much would it cost to epoxy a 24x24 garage floor?
At 576 square feet, a 24x24 garage typically lands around $2,600–$4,600 for flake epoxy or $3,200–$5,800 for a polyaspartic flake system, based on the ranges above. If the slab needs heavy crack repair or moisture mitigation, add roughly $1–$3 per square foot to the affected area.
How much does 1,000 sq ft of epoxy cost?
A 1,000-square-foot floor is common for detached shops and RV garages on larger lots in Eagle, Star, Kuna, Middleton, and Canyon County. Using typical ranges, that is roughly $3,000–$6,000 for solid-color epoxy, $4,500–$8,000 for flake epoxy, and $5,500–$10,000 for polyaspartic flake. Larger floors can come in toward the lower end per square foot because setup costs are spread over more area. Shops with heavy equipment may call for a thicker build; see shop and RV garage floors.
What changes the price?
- Square footage, measured wall to wall including any bump-outs.
- System: solid epoxy, flake, polyaspartic, or metallic.
- Concrete condition: cracks, spalling, pitting, and scaling near the door. See concrete repair and floor prep.
- Old coatings or sealers that must be ground off.
- Moisture that calls for a mitigation primer.
- Stem walls and vertical coat-up.
- Flake density and topcoat choice.
- Minimum job charge on small floors.
How much epoxy for a 2-car garage?
On a professional job, material is figured from the square footage, the number of coats, and each product's coverage rate at the intended thickness, plus a margin for porous ground concrete. You do not need to calculate it yourself for a quote. If you are weighing a DIY kit, read DIY kit vs. professional first, since kit coverage numbers reflect a much thinner film.
Does a 2-car garage cost more in Meridian, Nampa or Eagle?
Location within the Treasure Valley is a small factor compared with the size and condition of the floor. Newer garages in Meridian, Kuna, and Star tend to need less repair, though they often have a curing compound or sealer that must be ground off. Older garages in the Boise Bench, North End, Nampa, and Caldwell are more likely to need crack repair, oil stain treatment, or removal of old paint. Outlying areas such as Emmett or Mountain Home may involve a bit more travel. Our post on coating a new construction garage floor covers what new slabs need.
How to compare two quotes
If one quote for your 2-car garage is $2,200 and another is $3,800, do not assume one installer is overcharging. Put the quotes side by side and check:
- Is the floor being diamond ground or acid etched?
- How many coats, and what is each one made of?
- Is it a full flake broadcast or a light sprinkle of flakes?
- Is the topcoat polyaspartic or another UV-stable product, or plain epoxy?
- Are crack repair, control joints, and stem walls included or extra?
- How will old sealer or a failing coating be removed?
Often the lower number leaves out repairs or uses a thinner system. Make sure you are comparing the same floor.
Is a garage floor coating worth it?
For most Boise homeowners, a coating makes the garage easier to clean, protects the concrete from winter deicer and oil stains, and makes the space look finished. Whether it is worth the cost depends on how long you plan to stay and how you use the garage. Our post on how long garage floor epoxy lasts can help you weigh the investment.
Which system is the best value?
For most daily-driver garages, a flake epoxy floor offers the best mix of looks, durability, and price. If your garage door faces the afternoon sun or you want it back quickly, a polyaspartic system is often worth the step up. Plug your size into our garage floor epoxy cost calculator for a ballpark, then request a free on-site quote for a price based on your actual slab.