If you typed epoxy garage floor into a search, you are looking for the same thing almost everyone in Broward and Palm Beach is looking for: a coated slab that does not look like a stained driveway parked indoors. That search is fair. It is also why so many quotes in this market lead with a word that does not describe the climate, the concrete, or the failure.
The floor that looked perfect in March and is peeling by August did not fail because someone picked the wrong color. It failed because of what happened, or did not happen, before anyone opened a bucket. Two things sink garage coatings here, and both are decided by the slab. What we actually put down is on the garage floor coating page.
Epoxy is a useful shorthand. It is what nearly everyone searches for, and plenty of installers will still sell you one. Gold Coast Garage Floors does not. We install a two-part polyurea base coat, vinyl flake broadcast into it while it is still wet, and a polyaspartic clear coat on top.
The difference is not branding. Epoxy needs long open times. In this heat it turns a garage into a two-day job with cars in the driveway overnight. Polyurea and polyaspartic cure fast enough to grind, patch, coat, flake, scrape, and seal between morning and evening. You walk on it that night. You park on it twenty-four hours later. Heavy static loads (jack stands, a loaded toolbox) wait seventy-two hours.
The other difference shows up in the light. A South Florida garage is not a windowless box. The door opens onto afternoon sun. Standard epoxy is not UV stable. It ambers. A polyaspartic top coat stays clear. That is the same reason we will not put an epoxy finish on a pool deck or patio either.
If a quote says “epoxy” and does not name the base coat and the top coat, ask. You are finding out whether the person is selling a search term or a system.
Concrete does not come out of the finishing process ready for a coating. It comes out closed. Finishers trowel the surface on purpose: denser, smoother, less likely to dust. The pores at the face shut. That is good for a bare slab. It is a terrible substrate for resin.
A coating over a closed trowel finish is sitting on glass. The bond is mechanical, not chemical. The resin has to have a profile to lock into, or it is a film on top of the concrete, waiting for a hot tire, a wet season, or the first time someone drags a toolbox across it.
The only reliable way to open that surface is diamond tooling. We grind with a walk-behind machine running diamond segments, paired with a HEPA extractor. The extractor is not a convenience. Grinding concrete releases respirable crystalline silica. Dust control is how that hazard is managed, and it is also how your garage, your cars, and your driveway stay out from under a gray film.
If an installer skips the grind, everything after it is theater. The floor can look identical on the day of install. The bond never existed.
Acid etching is the shortcut that costs an installer almost nothing. It is fast, easy to sell as “prep,” and on a closed South Florida slab it is not prep. It does not cut a consistent profile. It does not reliably remove a dense trowel finish. It leaves a surface that can look etched and still be closed in the places that matter.
That is the single most common reason a floor that looked finished on day one lets go later: the March-perfect floor that is peeling by August, or the slower version: sheets of coating delaminating at the tire tracks and the threshold a season or two later.
You cannot see the difference in a photo of a finished floor. If the answer to “are you grinding or etching?” is etching, the chemistry in the bucket is already beside the point.
The second failure is specific to where we live. Much of the housing stock across Broward County and Palm Beach County sits on sandy subgrade with a high water table. A great deal of it was poured before under-slab vapor barriers became standard practice. Water vapor moves up through that concrete continuously. Seal it under a coating with nowhere to go and it builds pressure underneath and lifts the floor off in blisters.
This is not uniform across both counties.
Broward is really two markets for this work, split roughly along the Sawgrass Expressway and the western edge of the older grid. East of that line, much of the housing stock dates from the 1950s through the 1970s. Those slabs were poured before vapor barriers were ordinary. An older Plantation slab is far more likely to fail a moisture test. Coating one without testing is how floors blister within two seasons. West of that line, the master-planned communities that filled in through the 1990s and 2000s sit on newer slabs. A Weston garage poured in the Arvida years usually tests clean, which is why prep out there is often straightforward even when the bay is a three-car.
Palm Beach has the wider range. East Boca Raton holds Mizner-era through mid-century concrete, old enough that moisture testing is not a formality. West Boca, west Delray, Wellington, and Royal Palm Beach were developed largely from the 1980s onward on reclaimed agricultural land. The water table out there is high enough that testing is not optional, even on a slab that looks perfectly sound. We have seen plenty of those read high enough to require a mitigating primer.
We test every slab before we coat. We do not publish a threshold here, because the reading is only useful on the slab in front of you. If it comes back high, we quote a moisture-mitigating primer and tell you why. That adds cost. It is far cheaper than installing a floor twice. If it comes back clean, we say so and get on with it. Either way you hear the number.
Skipping the test is how a quote stays low. It is also how a floor that had no reason to peel starts bubbling at the joints and the front of the bay after the first long rain.
Peel is one failure. Amber is the other, and it does not need a wet slab to happen.
A garage door in this climate is a skylight that happens to be vertical. Open it on a July afternoon and ultraviolet hits the front of the floor for hours: the threshold, the first few feet of tire tracks, the area that photographs the worst when the color shifts. Standard epoxy yellows in that light. The rest of the floor, still in shade, stays closer to the original tone. You get a two-tone bay: clearer in the back, tea-colored at the opening.
That is not dirt. It is the resin. Epoxy is not built for UV. Polyaspartic is, which is why it is the top coat on our garage floors and why we will not sell an epoxy finish for outdoor concrete. On a pool deck, lanai, or patio, the same sun runs most of the year. Outdoors, an epoxy top coat will amber, chalk, and turn brittle, sometimes within two seasons. A garage is a milder version of the same problem, concentrated at the door.
If the quote is epoxy, and the door faces the afternoon sun, you already know where the floor will change color first. Outdoor work still needs grip as well as UV stability; a smooth high-gloss finish that looks right in a garage is the wrong floor around standing water.
The system is three layers, and none of them will save a closed, untested slab. Diamond grind with a HEPA extractor. Repair and moisture test. Two-part polyurea, flake broadcast to full rejection so the color is in the floor, then a UV-stable polyaspartic seal. Walk on it that evening. Park on it tomorrow.
Broadcast to rejection uses more flake than a partial-coverage job. Partial coverage is a legitimate way to hit a lower price. It is only a problem when nobody tells you that is what you are buying.
The posted rate is $8 per square foot on bare, sound concrete, with a $2,400 minimum. A typical two-car garage here is 400 to 600 square feet, so most land between $3,200 and $4,800. Three-car bays generally fall between $4,800 and $6,400. Ten percent books the install date. Things that move the number toward the top of the range: heavy spalling, coating stem walls and steps, a failed moisture test that needs a mitigating primer, and removal of an old coating, which adds $2 to $4 per square foot. We confirm the exact number on site before any work starts.
Tell us the garage size. We call back the same day with a number you can hold us to, and we still confirm it on the slab.
Broward: (954) 932-9393. Palm Beach: (561) 652-0778. Or get a firm number in writing.
The only reliable way to open a closed-trowel South Florida slab is diamond tooling: a walk-behind grinder with diamond segments and a HEPA extractor. Acid etching is the cheap substitute. It does not cut a consistent profile and it is the usual reason a floor that looked finished on day one lets go later.
We test every slab before we coat. We do not publish a threshold here, because the reading is only useful on the slab in front of you. If it comes back high, we quote a moisture-mitigating primer and tell you why. If it comes back clean, we say so and get on with it.
Gold Coast Garage Floors does not install epoxy. We install a two-part polyurea base coat, vinyl flake broadcast into it while it is still wet, and a UV-stable polyaspartic clear coat on top. If a quote says “epoxy” and does not name the base coat and the top coat, ask.
Broadcast to rejection uses more flake than a partial-coverage job. Partial coverage is a legitimate way to hit a lower price. It is only a problem when nobody tells you that is what you are buying.
Tell us your garage size and we will call back the same day. Ten percent books your install date.
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