Homeowner Guide
How much does a garage floor coating cost in Metro Detroit?
Professionally installed garage floor coatings in Metro Detroit usually run $5–$12 per square foot in 2026, so a typical two-car bay lands around $2,500–$6,000 once grinding, salt-spall repair, and a polyaspartic topcoat that can take Michigan freeze-thaw are in the number, not a $1,200 paint-and-pray quote.
That range is the same one we publish on the garage cost blog. A $1,200 two-car quote that skips the grind is not a deal. Those films fail in two to five years when road salt and hot tires hit them.
Use this page to sanity-check a written number. Then open the matching blog post or the calculator if you want a first pass before a site visit.
How much should I budget per square foot for a Metro Detroit garage?
Plan on $5–$12 per square foot for a professionally installed system, and $2,500–$6,000 for a typical 400–500 sq ft two-car garage once prep and a polyaspartic topcoat are included.
| System | Typical installed range | Best for |
|---|---|---|
| Budget epoxy (thin film) | $3–$6 / sq ft | Low-traffic bays that will not see heavy salt or hot tires |
| Flake polyaspartic | $5–$9 / sq ft | Most two-car garages |
| Premium flake / quartz | $7–$11 / sq ft | Heavier wear or a denser broadcast |
| Metallic epoxy | $8–$12 / sq ft | Showpiece bays with a UV-stable topcoat |
The color catalog on this site lists standard flake at $5–$8 / sq ft, premium designer at $7–$9 / sq ft, and metallic at $8–$12 / sq ft. Those numbers sit inside the $5–$12 garage range.
A two-car calculator preset is about 450 sq ft. Multiply that by the system you want, then add condition extras if the slab needs moisture work or old coating removal.
What actually moves a garage floor quote up or down in Michigan?
Prep, moisture, salt damage, finish, access, winter schedule, and old coating removal move the number more than the color chip you pick.
- Diamond grind to a real profile. Skipping this is how a $1,200 two-car quote fails in two to five years.
- Moisture primer when MVER is at or above 4.0 lbs / 1,000 sq ft / 24 hr. Calculator moisture adders are $0.50–$1.25 / sq ft extra.
- Salt spall and pitting. A flood coat is the path when more than 50% of the field shows pinholes or salt-scaling.
- Finish: flake $5–$9, premium flake/quartz $7–$11, metallic $8–$12 / sq ft.
- Access and layout. Tight bays, built-ins, and stairs take more tape and edge work than an empty rectangle.
- Winter window. Polyaspartic can install from about 35°F to 100°F+. Conventional epoxy wants 50°F–90°F. Cold slabs stretch epoxy cure.
- Old coating removal. Failed or unknown epoxy is 100% strip to bare concrete. Calculator removal adders are $1–$2 / sq ft extra.
What does a fair Metro Detroit garage quote actually include?
A fair quote names the grind, a moisture test, repairs you can see, the system build, and a written window for when you can walk and park.
You should see diamond grinding, crack and spall repair, and a polyaspartic or named epoxy build on the page. If MVER is at or above 4.0 lbs, a moisture barrier is not optional.
You should also see a park window. Polyaspartic is typically light traffic within 24 hours and full cure in 48–72 hours. Standard epoxy is 3–7 days to drive-on.
Warranty language on this site is 15+ year residential (per quote) for polyaspartic against peeling and delamination when the job is installed to spec. Exact years live on the written quote, not in a verbal “lifetime.”
How do I sanity-check a two-car garage number before I book?
Take 400–500 sq ft, multiply by $5–$12, and expect roughly $2,500–$6,000 when grind and polyaspartic are in the price.
If the quote is near $1,200 for a two-car and there is no grind, treat it as a paint job. That is the failure pattern we already published.
1940–1980 Metro Detroit garages often have no polyethylene vapor barrier. That is why a moisture test belongs in the quote, not as a surprise adder after the flake is down.
What do Metro Detroit homeowners ask about garage coating cost?
A typical two-car garage of about 400–500 sq ft lands around $2,500–$6,000 in 2026 when grinding, repairs, and a polyaspartic topcoat are in the number. Per square foot, professionally installed systems usually run $5–$12. A $1,200 quote that skips the grind is not that job.
Flake polyaspartic is published at $5–$9 / sq ft. Metallic epoxy is $8–$12 / sq ft. Metallic is a showpiece film with a longer metallic cure window of 48–72 hours, so labor and material sit higher than a standard flake broadcast.
Winter changes the chemistry window more than it invents a new price list. Polyaspartic can install from about 35°F to 100°F+. Conventional epoxy wants 50°F–90°F, and cold slabs stretch the 3–7 day drive-on window. Salt-spall repair still sits in the quote either season.
A fair quote includes diamond grinding, a moisture test, visible crack and spall repair, the named system, and a written walk/park window. Moisture primer is required at or above 4.0 lbs MVER. Failed unknown epoxy is 100% removal, not a skim coat.
The calculator is a first pass using residential rates (flake $5–$8, metallic $8–$12 / sq ft) plus adders for cracks, moisture, removal, and contamination. It is not a substitute for measuring a salt-damaged 1940–1980 slab in person.
Polyaspartic is typically light parking within 24 hours and full cure in 48–72 hours. Standard epoxy is 3–7 days to drive-on. The written quote should print the window for your mix and slab temperature, not a guess from a brochure.