When your slab won’t deliver the floor you want
Some slabs aren't a good fit for the straight mechanical polishing behind most polished concrete floors in Austin. For those, concrete resurfacing with a polishable overlay can give you a fresh, more even surface. We check slabs for overlays and put them down across Austin. We'll tell you whether we think your slab can take one, what it's good for, and what look to expect. And we'll be just as clear about what it can't do.
The call usually comes at the end of our slab check. Say the tile comes up, we grind a test area, and what's underneath is a patchwork. There's a trench from a plumbing repair, an addition poured a decade later in another color, and glue stains that won't grind out at the agreed depth. Polishing that floor is possible, but liking the result is a different question.
An overlay gives up the slab’s history in exchange for a more consistent floor. That's the whole deal, and it's a fair one for plenty of Austin properties, from midcentury slab homes around South Congress to commercial buildings in Round Rock and Cedar Park.
Types of resurfacing and why the difference matters
Not every topping can be polished. We keep polishable overlays apart from other resurfacing products so you know what the finished floor can become:
- Polishable cement overlay: made to be the floor you walk on, poured thick enough to grind, and finished with diamond passes much like a slab.
- Self-leveling underlayment: made to go under another floor. It levels well, but it isn't built to be the finished surface.
- Microtopping: a thin decorative concrete coat, often with a troweled texture. Good for decorative looks, not for deep grinding.
Ask any contractor which of the three they're quoting, because if the answer is vague, it's hard to know what floor you'll get. Our polishable overlays guide covers the differences in full.
Can your slab take an overlay? What we test first
An overlay is only as good as the concrete it's stuck to, and good prep has a lot to do with whether it stays stuck. Before we recommend one, we usually look at:
| Check | Why it matters |
|---|---|
| Is it solid, and will things stick? | A surface that's flaking off or crumbling can't hold an overlay. When bond is in doubt, a pull off test can help settle it |
| Moisture | Moisture coming up affects how well it sticks and how the overlay dries |
| Existing coatings | Sealers, glue, and old paint usually have to be ground off first |
| Moving cracks | A crack that's still moving can show through the overlay. We handle cracks that aren't moving another way, depending on the slab and the system |
| Floor height | The added thickness has to work with doors, thresholds, and the floors next to it |
Honest limits for Austin properties
An overlay changes the surface, not the structure, so it won't stop a slab from moving underneath. Central Texas clay swells and shrinks, so slabs flex with the seasons, and a moving crack can come back through a topping. If the movement looks serious, we'll tell you to get a structural engineer out before you pick any finish. We cover the local story in our guide to polishing concrete over Central Texas clay.
There are practical limits too: how thin and thick the product can go, drying time before we grind, and the tapered edges where it meets other floors. We plan for those up front and go over them during the consultation.
What a concrete overlay project costs
We price overlays differently from polishing, because you pay for the material and the pour as well as the finishing. Homes and commercial jobs differ too, since an apartment hallway or retail showroom usually has access and scheduling limits that a single family home in Georgetown or Pflugerville doesn't.
Prepping the slab. Pulling up the old flooring, roughing up the concrete, and any repairs the slab needs, all before the overlay goes down.
Material and thickness. How much product we use depends on the thickness the system calls for and how much leveling the floor needs.
Site conditions. The size of the space, room to mix and pump, and whether we can pour the floor in one go all affect labor.
Cure time. The overlay has to cure before we can grind it. That's waiting time rather than labor, but it still affects the schedule and when you can use the space.
Finishing. From there it's priced like a polished slab: how much stone shows, how much shine, any lithium silicate hardener, and any protective coat. Our cost guide has typical 2026 Austin price ranges.
An overlay usually costs more than polishing a sound slab and less than replacing the floor.
When do you need an overlay?
Ask three questions. Did a test grind show a slab you wouldn't be happy living with? Is the problem built into the concrete, like several pours, heavy patching, or deep stains, and not something grinding will fix? And do you care more about an even look than the original slab's character?
Three yes answers point to an overlay. Two or fewer usually means polishing the slab you have is the better route, and often the cheaper one. We walk property owners across the Austin area through the same check, from a ranch home in Lakeway to a commercial space in Pflugerville.
Polish, overlay, or epoxy?
If your slab can be polished as is, we'll steer you there. Our polished concrete page covers what direct polishing involves. If the space needs to resist chemicals or needs a surface with no seams that curves up the wall, epoxy is usually the better fit. An overlay sits in the middle, and we'll help you figure out which route your slab needs.
How our overlay approach compares
| Feature | What We Often See Elsewhere | Austin Polished Concrete Floors |
|---|---|---|
| Slab check | Often just a look | Bond, moisture, and moving cracks checked as the slab calls for, with pull off tests when bond is in doubt |
| Naming the polishable overlay | Often lumped in with general resurfacing | Named separately from underlayments and microtoppings |
| Planning floor height | Often dealt with during the install | Door gaps and floor edges planned before we pour |
| Telling you the limits | Often after you've signed | Honest limits explained before we recommend anything |
Every project starts with an on-site evaluation. Actual scope, pricing, and expected results depend on your specific substrate condition, environment, and project requirements. The website describes our services in general terms. Your signed proposal governs the actual work.
