This is our planning guide for a DIY quartz epoxy garage floor in Miami. It covers local weather, slab prep, how many kits you need, what it costs and answers to the questions people ask before they start.
Every kit ships from our shop in Queen Creek, Arizona, and comes with free phone support from the people who mix and pack it. Call 602.600.0781 with questions before, during or after your install.
Miami at a glance for epoxy work
| Typical July high | About 91°F |
| Typical January low | About 62°F |
| Average yearly snowfall | Little to none |
| Humidity | High most of the year |
| Best pour window | Any time of year on a dry day, with the garage closed and dehumidified |
| Kits for a two car garage | 4 kits for 400 sq ft (1 kit = 100 sq ft) |
Temperatures and snowfall are rounded long term averages for the city and are meant for planning. Always check the forecast and measure your actual garage and slab temperature on pour day.
How Miami weather affects your epoxy pour
Summer afternoons in Miami average around 91°F, which puts many garages near or above the 90°F upper limit for application. Mid summer pours are possible if you start early and work in small batches, but spring and fall give you the full working time.
Winters are mild, with January lows around 62°F, so cold is rarely the limiting factor here.
Humidity is the factor to watch most closely in Miami. Keep relative humidity under 65 percent during the pour, and make sure the slab is at least 5°F warmer than the dew point so moisture does not condense on the surface and cloud the finish. Closing the garage and running a dehumidifier or AC for several hours beforehand is the simplest fix.
Best time of year to pour in Miami
For most Miami garages, the most forgiving window is any time of year on a dry day, with the garage closed and dehumidified. In that stretch you can usually count on the slab staying between 60°F and 85°F through the 72 hour cure, which gives you full working time and a consistent finish.
Prepping a Miami garage slab
It never gets too cold to pour in Miami, but humidity is high nearly every day. Close the garage and run AC or a dehumidifier until the air is under 65 percent.
Before anything else, do the water droplet test. Sprinkle water on the bare concrete. If it soaks in within about 30 seconds, the surface is ready to grind and coat. If it beads up, there is a sealer, paint or contamination that has to come off first.
Tape a square of plastic sheeting to the slab for 24 hours. If the concrete under it darkens or the plastic shows condensation, the slab has a moisture issue to address before coating.
Our full step by step process is on the installation instructions page.
Which kit fits your Miami project
Indoor quartz sand epoxy self leveling floor kit. This is the kit for garages, workshops, basements and other interior concrete, in Marble Grey, Desert Grey or Black. The quartz aggregate gives a thicker, more textured and more slip resistant surface than standard garage floor paint or thin water based epoxy. It is made for indoor use and does not have strong UV protection, so keep it out of direct, all day sun.
Outdoor washed stone quartz epoxy floor kit. With as much sun as Miami gets, patios, walkways and porches should get the outdoor system rather than the indoor kit. It comes in four stone colors and covers up to 100 square feet per kit. The washed stone finish lets water pass through, so it is not a waterproofing membrane. Over a basement or living space, a separate waterproofing layer is needed underneath.
Tools. To spread and finish the coating you need a 22 inch squeegee with pole, a 20 inch defoaming roller and an extension pole for the roller. Our epoxy tool kit adds a tool bag, spiked shoes for walking on the wet coat and five finishing trowels.
How many kits you need
One kit covers 100 square feet at the target thickness of about one eighth inch. No guessing. Measure the length and width of the floor, multiply, divide by 100 and round up. A one car garage is about 200 square feet and takes 2 kits, a two car garage is about 400 square feet and takes 4 kits, and a two and a half car garage is about 500 square feet and takes 5 kits. Do not stretch coverage, since a thin coat will not level properly.
Questions Miami customers ask
When is the best time to epoxy a garage floor in Miami?
For most Miami garages the best window is any time of year on a dry day, with the garage closed and dehumidified. You want the garage between 41°F and 90°F, ideally 68°F to 77°F, with humidity under 65 percent.
How much does a DIY epoxy garage floor cost in Miami?
One kit covers 100 square feet, so a standard two car garage of 400 square feet takes 4 kits. At current pricing that is $996 in Marble Grey or Desert Grey and $1,200 in Black. If you do not own them, add about $95 for the squeegee, defoaming roller and extension pole, plus primer if your slab needs it. Professional installs are often quoted around $4 to $10 per square foot, which puts the same garage at roughly $1,600 to $4,000.
Can I use the indoor quartz epoxy kit on a patio in Miami?
The indoor kit is made for garages, shops and interior floors and does not have strong UV protection, so it can yellow in direct sun. For patios, porches and walkways, use our outdoor washed stone kit. It covers up to 100 square feet per kit, and because the washed stone finish lets water pass through, it is not a waterproofing membrane.
How long before I can park on my new floor?
Light foot traffic is fine after 24 hours, the coating reaches full cure around 72 hours, and you can drive and park on it after about 5 days.
Why does epoxy bubble, and how do I stop it?
Concrete releases trapped air as it warms, and that air rises into the wet coating. Go over each section with a spiked defoaming roller 2 to 3 times while the epoxy is still wet, and pour when the slab is not heating up, such as early morning or evening.
Do I need a primer under the epoxy?
Primer is sold separately and is strongly recommended for older or porous concrete, slabs that were painted or sealed, floors with past moisture issues and any garage that sees heavy vehicle traffic. It seals the pores and gives the coating a stronger bond.
Do I have to grind the concrete, or can I acid etch it?
We recommend grinding. An angle grinder with a diamond cup wheel or a rented floor grinder gives the concrete a texture like 60 grit sandpaper that the epoxy can grip. Acid etching is less consistent and can leave residue behind, which is a common cause of peeling.
How do I clean an epoxy garage floor?
Sweep or dust mop to remove grit, then mop with a pH neutral cleaner in warm water. Avoid vinegar, citrus cleaners, bleach and harsh solvents, which can dull the finish over time. Wipe oil and chemical spills right away.
Ready to start your Miami garage floor
Talk to us about square footage, color and prep before you order. We are available Monday through Friday, 8am to 5pm Arizona time.
Nearby and similar climate guides: Jacksonville, FL, Tampa, FL, Orlando, FL, Honolulu, HI, St. Petersburg, FL. See all city guides.