Epoxy flooring, and when we recommend against it
Epoxy still has a place — mostly indoors, out of direct sun, and where budget matters more than a 20-year finish. We will tell you honestly when that is your floor, and when it is not.
01 / WHAT IT IS
A proven resin, with a real limit.
Epoxy is a two-part resin coating: a resin and a hardener that react and cure once mixed. It has been the standard garage and shop floor coating for decades, and in the right conditions it still performs well — hard, chemical-resistant, and available in solid colors, flake blends, and the metallic pigment effects covered on our metallic epoxy page.
What epoxy is not built for is a slow cure in direct desert heat. It typically takes a day or more to cure fully, during which the resin is more sensitive to temperature and humidity than a fast-curing polyaspartic. That is a manageable constraint indoors, out of the sun, in a controlled environment. It becomes a real limitation on any slab that sees direct summer sun or hot tires rolling in straight off the street.
02 / IN ARIZONA
Where it works, and where it doesn't.
Two specific failure modes show up disproportionately with epoxy in this climate. The first is hot-tire pickup: a tire that has been rolling on 150°F+ asphalt softens standard epoxy enough to lift or wrinkle it as the tire cools. The second is UV yellowing and chalking on any epoxy that sees direct sun — through an open garage door, on a covered patio with reflected light, or outdoors where epoxy was never intended to live long-term.
Where epoxy still makes sense: a fully enclosed interior garage or shop with no direct sun and light vehicle traffic, a decorative metallic floor in a showroom or game room, and cost-sensitive commercial spaces — retail stockrooms, light-industrial interiors — where budget outweighs the marginal performance gap and UV exposure is not a factor. Where we recommend against it: any garage door that catches afternoon sun, any exterior slab, any floor that will see hot tires rolling straight in from a summer street. For those, we default to polyaspartic — see /polyaspartic-floor-coatings/.
03 / THE SYSTEM
Prep doesn't change.
Prep does not change by resin type. What changes is the base and, often, the topcoat.
- 01
Diamond-ground slab
The existing concrete, mechanically profiled to open the pores so the coating bonds instead of sitting on top.
CSP 3?
- 02
Moisture-mitigating primer
Seals vapor drive from the slab before it can push a finished coat loose from underneath.
2–4 mil?
- 03
Pigmented epoxy base coat
A two-part epoxy resin providing color and, when broadcast, a base for flake. It cures slower than polyaspartic and needs a shaded, temperature-controlled work window to lay down correctly.
8–10 mil?
- 04
Flake broadcast (optional)
The same vinyl flake broadcast used in our polyaspartic systems, for texture and color, applied while the epoxy base is still wet.
Full broadcast to refusal, where selected?
- 05
Topcoat, epoxy or polyaspartic
We frequently finish an epoxy base with a polyaspartic topcoat rather than epoxy-on-epoxy — it cures faster and holds color and clarity better under UV, even on an interior floor near a window or door.
4–6 mil?
04 / OPTIONS
Where epoxy fits your floor.
05 / TIMELINE
A longer cure window.
- 01 Same visit
Inspect & test
We confirm the space is a good fit for epoxy before we quote it — sun exposure and ventilation matter more here than with polyaspartic.
- 02 Morning
Grind & repair
Diamond grinding and crack repair, identical to every other system we install.
- 03 ~1 day cure
Base coat
The pigmented or metallic epoxy base goes down in a shaded, temperature-controlled window.
- 04 ~1 day cure
Topcoat
A clear topcoat — epoxy or polyaspartic — seals the base and carries the wear layer.
- 05 Longer than polyaspartic
Return to service
Epoxy systems generally need a longer full cure than polyaspartic before heavy or vehicle traffic; we give you exact timing at scheduling.
06 / COST
What epoxy runs.
Typical range
$4–$7?
per sq ft installed
A straightforward interior epoxy system, without the UV-stable additive package an exterior job requires, is often priced close to our solid-color polyaspartic range below — the material cost gap is smaller than people expect. Complexity (metallic effects, larger square footage, extensive repair) moves the number more than resin type does.
Full cost breakdown by system & sq ft →07 / FAQ
Questions about epoxy.
01 Will epoxy hold up on my garage floor in Arizona?
It depends on sun exposure. An interior garage with no direct sun and no hot tires rolling straight in off a summer street can do fine with epoxy. A door that catches afternoon sun is exactly the condition epoxy struggles with — we will tell you honestly which system fits, not sell you the one with the better margin.
02 Is epoxy cheaper than polyaspartic?
Sometimes, at the material level, but the gap is smaller than most people assume once labor, prep, and a comparable topcoat are factored in. We quote both so you can compare an actual number for your floor, not a rule of thumb.
03 Can I get a metallic look with epoxy?
Yes — metallic pigment effects are an epoxy-specific finish; polyaspartic does not produce the same pearlescent movement. See /metallic-epoxy-floors/ for that system in detail.
04 Can you upgrade an existing epoxy floor without starting over?
Usually not by coating directly over it — we inspect the existing floor and, in most cases, grind it off so the new system bonds to sound concrete. We will tell you exactly what your floor needs when we look at it.
08 / GET A NUMBER
Get a number, not a pitch.
- 01
Send photos or book a visit
Whichever is faster for you — both work.
- 02
We measure and inspect
Slab condition, cracks and moisture, on-site or from your photos.
- 03
You get a written quote
A firm number and an install date, not a range that moves later.
Prefer to talk? (623) 000-0000?