Worried a new coating will peel up where your tires sit, or turn yellow a few months in?
A garage floor coating is a resin system rolled over your concrete slab, usually a base coat, colored flake, and a clear topcoat. Done right, it's easy to clean and takes years of cars, tools and winter melt. Done fast, it peels where the tires sit. The difference is almost all prep, and this page covers what to ask before anyone grinds your floor.
Denver Stamped Concrete pours and repairs concrete, but we don't install garage floor coatings. Requests from the form on this page go to Networx Systems, Inc., which matches you with garage floor coating contractors in the Denver area.
You've been parking on it a few weeks and the coating is lifting in four neat patches. That's called hot tire pickup. Tires come off the road hot, soften the coating, and pull it up as they cool. It points to a coat that went on too thin, a product that wasn't rated for parking, or concrete that wasn't ground before coating. The fix is grinding it off and starting over, not rolling another coat on top.
Someone cut a blister open and found water. Concrete holds moisture, and a coating rolled over a damp slab can look perfect on day one and bubble or lift weeks or months later. A moisture test before coating is the only way to know. If an installer skips the test and also leaves moisture out of the warranty, the risk is all yours.
Epoxy ambers in sunlight, and a garage with the door open all summer gets plenty of it. Homeowners who wish they'd known usually ended up with an all-epoxy system. A polyaspartic topcoat holds its color.
Epoxy grips bare concrete well, which is why it still shows up as a base coat. On its own it yellows in UV and keeps hardening with age, so it gets more brittle and more likely to chip. Polyaspartic and polyurea stay a bit more flexible, hold their color, and cure faster, so you're usually parking on the floor much sooner.
A common setup is a polyurea or epoxy base, a full or partial flake broadcast, and a polyaspartic topcoat. Ask any installer for the brand and product name of every coat and how many coats they put down. A vague answer here is the first warning sign.
Every failure story above traces back to the slab, not the resin. A good install starts by grinding the surface with a diamond grinder so the coating has something to bite into, then fills cracks and pits, tests for moisture, and only then puts down the base coat. An acid wash or a quick sweep isn't the same thing.
Old paint or an old coating has to come off first, and that's often priced separately. So is repair work on cracked or pitted concrete. Ask how the floor will be prepped and get it written into the quote.
All winter, cars bring mag chloride brine and snowmelt into the garage and drip it onto the slab, usually right where you park. On bare concrete that brine works into the surface and scales it. A sealed coating keeps it on top, where you can squeegee it out the door.
If your slab is already scaled, pitted or cracked from years of that, the damage gets repaired before the base coat goes down. A coating over loose, flaking concrete fails along with it. If the slab is heaving or has sunk, that's a concrete repair question before it's a coating question.
Garage coating quotes swing a lot, and the cheapest one usually saves money on prep. These are the things that change the number:
If one quote is far below the others, ask what it leaves out. Most of the time it's grinding, moisture testing, or the topcoat.
A coating covers the slab. It hides old stains and pitting and wipes clean of oil. Polished concrete is the slab itself, ground and refined, so there's nothing on top to peel, but it won't hide stains or damage that's already there. A bare garage slab that just needs protection from winter brine may only need concrete sealing.
A glossy coating with no texture can be slick when it's wet, and a wet garage floor is a given in a Denver winter. Flake and an anti-slip additive in the topcoat give it grip. Ask to see or feel a sample with the texture you're getting.
That's hot tire pickup. Tires come off the road hot, soften the coating, and pull it up when they cool. It almost always means the coat was too thin, the product wasn't rated for parking on, or the slab wasn't ground before coating. A redo needs proper grinding first, not a patch on top.
Epoxy bonds well to bare concrete but yellows in sunlight and gets more brittle with age. Polyaspartic holds its color and cures faster. A lot of installers use a polyurea or epoxy base with a polyaspartic topcoat. Ask any installer which products they use and why.
Usually, once the damage is repaired. Cracks get filled and pitted or scaled areas get patched before the base coat. If the slab is heaving or still moving, that's a concrete problem to fix first, and a coating won't hide it for long. See concrete repair.
Denver Stamped Concrete doesn't install garage floor coatings. The form on this page goes to Networx Systems, Inc., which matches you with garage floor coating contractors in the Denver area. They'll contact you to set up an estimate.
Homeowners split on it. People who love theirs mention a floor that's easy to clean, doesn't throw concrete dust, and holds up to winter melt off the cars. People who regret it almost always had a thin coat over a slab that wasn't prepped. Prep is most of the job, so that's where to spend your questions.
