What We Check Before Coating a Garage Floor

Published July 1, 2026

After years of grinding and coating slabs around Collin County, our crew has learned that the floors that fail almost never fail because of the epoxy. They fail because of something we could have caught before we opened a bucket. Here is what we look at on every garage before we quote a coating, straight from the people who do the work.

Is the Slab Dry Enough

Concrete on grade wicks moisture up from the soil, and that vapor is what pushes a coating off from underneath as osmotic blisters. On any older or ground-level slab near 75002 we run a calcium chloride or relative humidity probe test. If it reads high, we install a moisture-mitigation primer before the base coat. Skipping that test is how a floor peels a year later.

How Bad Are the Cracks and Spalls

A hairline crack is normal, but a wide crack or a flaking, spalled surface tells us the slab needs repair first. We chase cracks out, fill them with an epoxy joint filler, and patch spalls so the finish coat has solid concrete to grip. A floor is only as sound as the slab beneath it, and we would rather fix that up front than coat over a problem.

Was It Ever Sealed or Painted

Many garages off Stacy Road have an old sealer or a layer of failing paint. Coatings will not bond to that, so we test with a quick water bead and a solvent wipe. If the slab is sealed or coated, we grind it all off. Our garage floor epoxy systems always start on bare, diamond-ground concrete, never over an old finish.

How Do You Use the Space

A floor for a daily-driver garage, a home gym, and a working shop are not the same build. Hot tires call for a topcoat rated for hot-tire pickup, while a sunlit bay near an open door needs a UV-stable polyaspartic clear so it does not amber. We ask how you use the room so the system matches the wear it will actually see.

Can We Finish Around Your Schedule

If you cannot lose the garage for days, we plan a one-day polyaspartic build that cures fast enough to park on by the next afternoon. We walk the timing with you before we start so the floor fits your week, not the other way around.

Every one of these checks happens before we quote, so the number you get reflects the floor you actually have. Thinking about coating your garage in Allen? Contact us or call Allsaintsofamerica at (972) 430-8730 for a free written quote.