Epoxy & Polyurea Garage Floor Coatings in Minneapolis and St. Paul
Seamless, Chemical-Resistant Garage Floors, Installed by Your Local Concrete Experts
Epoxy Garage Floor Coating Experts
Every Minnesota winter, your garage floor takes in whatever your car drags home: road salt, slush, sand, and the occasional oil drip. Bare concrete is porous, so that mess soaks in and stays. A coated floor gives it nowhere to go.
Our garage floor system pairs an epoxy base coat with a hand-broadcast color flake and two coats of clear polyaspartic. The result is a seamless, chemical-resistant surface that sweeps and mops clean and looks finished. It comes from the same material-first thinking behind our driveway innovations, applied to the slab inside your garage.
Surface Preparation That Keeps Your Coating Bonded
Most peeling garage floors fail at the concrete, not the coating. A roll-on kit goes down over smooth, dusty, sometimes oily concrete with nothing to grip. We start differently: a shot blaster and a diamond floor grinder open up the surface so the epoxy bonds into the slab instead of resting on it, with HEPA-filtered dust containment running while we work.
Damage gets fixed before any coating goes down. Cracks, pits, and broken expansion joints are filled with rigid epoxy or flexible polyurea filler, then ground flush. One honest caveat: if a slab keeps moving or settling, cracks can show back through any coating. We’ve poured and replaced slabs across the Twin Cities since 1989, so you’ll get a straight answer at the estimate about whether your floor needs a coating or more.
Our 7-Step Garage Floor Coating Process
Each coat depends on the one beneath it, so we never skip or combine steps. Here’s what happens between the first visit and the final clear coat.
Estimate and Walkthrough
We meet you at your garage, check the slab, measure the space, and walk you through flake color options.
Shot Blast and Grind
A shot blaster and floor grinder profile the concrete, then we clean, sweep, and vacuum the entire floor.
Crack and Patch Repair
We fill cracks, pits, and damaged joints with rigid epoxy or flexible polyurea filler so the coating goes over solid concrete.
Final Grind and Clean
Patched areas are ground flush, and the floor is cleaned again, so nothing sits between the concrete and coating.
Epoxy Base Coat
An industrial-grade epoxy base coat goes down and bonds directly into the freshly profiled concrete surface.
Decorative Flake
We broadcast your chosen color flake by hand into the wet base coat until the surface reaches full saturation.
Polyaspartic Clear Coat
Two clear polyaspartic coats lock in the flake and form the finished surface you'll walk and park on.
Installation takes two days, followed by the cure time covered below. Like the innovative concrete techniques behind our driveways, each step is built around what happens underneath, because that’s what decides how well the finish holds up.
Planning Your Garage Floor Coating Project
Two things get settled before install day: how your floor will look, and getting the garage ready for our crew. We’ll walk through both at your estimate so nothing comes as a surprise.
Choosing Your Flake Color
Cornerstone Concrete offers a variety of color options for the decorative flake coating. You can pick the blend yourself, or let our team recommend one that suits your home, your lighting, and how much everyday dirt you’d like the floor to hide. Because we broadcast the flake by hand, expect slight variation in texture, sheen, and distribution. That variation is part of what gives a coated floor its finished, natural look.
Getting Your Garage Ready
A little prep on your end helps the coating bond and cure the way it should. Here’s what to plan for.
- Clear it out. Remove vehicles, storage, and anything on the floor before we arrive, and leave at least 4 feet of overhead clearance for our equipment.
- Hold the temperature. Keep the garage between 55°F and 85°F from 24 hours before install through the full cure. If it needs heat, we’ll bring a heater, and you’ll keep it running.
- Give it time to cure. No foot traffic for 24 hours, and no vehicles, heavy tools, or furniture for 72 hours.
- Plan for small touch-ups. Expect a light film of concrete dust on walls and ledges, and possible touch-up paint at edges and corners. Both are the homeowner’s to handle.
If anything here raises a question, like where to store your things or how to keep the space warm, ask us at the estimate. We’ll help you plan around it.
What Our 15-Year Limited Warranty Covers
Cornerstone Concrete backs every garage floor coating with a 15-Year Limited Warranty from the day we complete application. It covers delamination and peeling caused by defective material or our workmanship, and we spot-treat any affected area rather than replacing the entire floor. Coverage stays with the original purchaser; warranty service requires a paid-in-full invoice, and an invoice left unpaid past 60 days voids it.
Our warranty excludes:
- Cracking, settling, or frost heave in the concrete below
- Scratches, gouges, or impact damage from metal equipment, snowblowers, snowmobiles, plow blades, or ice chippers
- Damage from harsh chemicals, such as battery acid or brake fluid, left on the floor
- Staining from uncleaned spills, tire plasticizer, or abrasive cleaners
- Yellowing or discoloration from extreme UV exposure
- Rust stains from metal tools left on the floor
For full coverage details, exclusions, and care guidelines, read our Epoxy Flooring Terms & Limited Warranty before your project starts.
More Concrete Services
A coated garage floor is one part of the concrete around your home. Cornerstone Concrete also installs and replaces the exterior concrete leading up to it, built for Minnesota and western Wisconsin winters.
Concrete Driveway Installation & Replacement
Full tear-outs and new installs with proper base prep, drainage, and reinforcement, so the driveway leading into your garage holds up as well as the floor inside it.
Fiber Reinforced Concrete Driveway Installation
Macro synthetic fibers mixed through the concrete add strength and help control cracking through freeze-thaw cycles and heavy vehicle loads.
Maintenance-Free Driveway Mix
Our mix design, additives, and finishing seal the concrete from the inside, so your driveway doesn’t need resealing every few years.
Add-On Exterior Concrete Services
Garage floor slabs, patios, walkways, steps, and aprons, poured with the same durability as your driveway.
The Cornerstone Difference
We’re concrete specialists working out of our North St. Paul shop, and we know a coating is only as good as the slab under it. That’s why we treat your garage floor as a concrete job first.
- Family-owned and locally employed since 1989
- Mechanical surface prep on every floor, never a roll-on shortcut
- HEPA-filtered dust containment during every surface prep
- A written 15-Year Limited Warranty on every coating
- BBB A+ rated and an Angi Super Service Award winner
Wherever you are across the communities we serve, you work with one local company from the first walkthrough to the final clear coat, and we’re the same people you call if your floor ever needs attention.
Ready to Work With a Trusted Garage Floor Coating Expert Near You?
Your garage floor takes a lot, and after enough Minnesota winters, the stains and wear can start to feel like part of the house. They don’t have to be. We’ll stop by, look at your slab with you, show you color options, and give you a clear, itemized quote with no pressure to decide on the spot. Call (612) 325-3742 or request your free estimate, and let’s talk about what your garage could look like.
Garage Floor Coating FAQs
How long after the coating goes down can I walk on the floor and park inside?
You can walk on the floor 24 hours after the final coat, and park, move furniture back, or use heavy tools after 72 hours. With two days of installation, plan on about five days before you're fully back in your garage.
Can you coat a garage floor in the winter?
Yes. The garage needs to stay between 55°F and 85°F for 24 hours before installation and through the full cure. If it can't hold that on its own, we'll bring a heater, and you'll keep it running.
What's the difference between epoxy and polyurea floor coatings?
Our system uses both families. The epoxy base coat bonds to the ground concrete and holds the flake, and the polyaspartic clear coat, a type of polyurea, forms the top wear layer.
Will cracks in my floor show through the coating?
We fill cracks, pits, and damaged joints before coating, so existing damage is repaired first. If the slab keeps moving or settling, though, cracks can reflect through over time, and that movement isn't covered by the coating warranty.
How much does a garage floor coating cost?
Cost depends on your garage's size, the slab's condition, and how much crack and joint repair it needs. Our driveway pricing guide shows how those same factors shape concrete costs, and we'll give you an exact coating price after an on-site look.
How do I keep a coated floor looking good?
Sweep regularly and mop with a non-abrasive cleaner. Wipe up chemical spills promptly, and don't drag metal equipment across the floor or leave metal tools sitting on it. For the concrete outside your garage, our concrete driveway FAQs cover winter care and stain removal.
