Why will most companies not give a price over the phone?

Partly legitimate: the condition of your concrete genuinely changes the number, and nobody can see that over a phone call. Partly sales: an in-home appointment is where a close happens. We publish ranges so you can tell whether we are in your budget before anyone drives out, then we confirm the exact number after we look at the slab.

Is a coated floor cheaper than replacing the concrete?

Dramatically. Tearing out and repouring a two-car garage slab typically runs well into five figures once you count demolition, disposal, new concrete and the cure time. A coating over a repaired slab is a fraction of that and you keep your garage.

Does a coated garage floor add value to the house?

It is one of the most visible, lowest-cost upgrades you can make before a listing, and garages are one of the first things buyers walk into from the driveway. We would not claim a dollar-for-dollar return, but a clean finished floor photographs well and makes the rest of the garage look finished.

Garage Floor Coating Cost in the Chicago Suburbs

What a floor runs, by size

These are installed prices for a full polyaspartic flake system on sound concrete with a standard flake blend, in Will, DuPage, Kendall, Kane, Grundy and south Cook counties.

1-car garage, roughly 220 to 280 sq ft: $2,000 to $2,400
2-car garage, roughly 400 to 480 sq ft: $3,400 to $4,100
2.5-car garage, roughly 500 to 576 sq ft: $4,250 to $4,900
3-car garage, roughly 600 to 720 sq ft: $5,100 to $6,100
4-car garage or shop, roughly 800 to 1,000 sq ft: $6,800 to $8,500

Those ranges assume sound concrete and a standard flake blend. We do not publish a flat rate per square foot, because a clean builder slab and a cracked 1960s slab are not the same work and pricing them identically means somebody is overpaying. The full table is on the pricing page.

The six things that move your number

The condition of your concrete. This is the biggest swing by far. A ten-year-old builder slab grinds clean in a couple of hours. A 1970s slab with spalling, popouts, settled low spots and open joints is most of a day of repair before any coating happens.
Whether something has to come off first. Old paint, sealer, carpet glue or a failed epoxy kit all have to be ground back to bare concrete. On a floor somebody else already coated, removal can cost more than the new floor does.
The flake you pick. Standard grey, black and tan blends are in the prices above. Custom color matches, two-tone blends and metallic finishes cost more.
Anti-slip aggregate. Worth it on a sloped apron, a pool deck or a wet shop floor. Not needed on a normal garage.
Wrapping curbs, steps and the apron so the floor does not stop in a hard line at the overhead door.
Moisture mitigation. If a slab tests high for vapor, it needs a heavier primer under the system. We test before quoting so this is not a surprise mid-job.

Why the cheap quote is cheap

When a quote comes in dramatically under everyone else, one of a short list of things is true, and it is worth asking which:

The slab is being acid etched instead of diamond ground. Etching does not create a real mechanical profile and the coating has much less to hold onto.
There is no moisture vapor barrier, which is how a floor gets finished in a single day. That is the layer that stops the floor lifting in a few summers. See our polyaspartic vs epoxy guide.
The flake is scattered for coverage instead of broadcast to refusal, so the finished film is thinner and the color is less uniform.
Crack and popout repair is not in the number and will be added later.

Why the expensive quote is expensive

Some of it is genuinely a better floor. Some of it is a sales model. The national and franchised outfits in this market carry a commissioned in-home closer, a presentation, and frequently a price that starts high so there is room for a same-day discount. If a quote is only valid if you sign tonight, that is not a deadline, that is a technique.

A straight answer is cheaper to give than a performance. Ours is one number, in writing, that is the same number next week.

How to compare three quotes fairly

Get every company to put these on paper and the comparison becomes easy:

Prep method: diamond grind or acid etch
Whether a moisture vapor barrier is included, and which layer it is
Total finished mil thickness
Flake coverage: to refusal, or partial
Top coat product and whether it is UV stable
What crack, joint and popout repair is included
Whether the apron, curb and steps are included or extra
Warranty term, what it excludes, and whether labor is covered

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Garage floor coating cost in the Chicago suburbs