What Makes Mechanical Polishing Different from a Coating?
Polished concrete, the way we do it, is a mechanical process and not a coating. We grind home and business slabs with diamonds, usually harden the surface so it resists wear better, then polish it with finer and finer diamond pads. The shine you end up with is the concrete itself. Unless you add a protective coat, there's no film on top to scratch through or peel away.
That difference matters more than any other choice on this page. Mechanical polishing is how we do all of our polished concrete floors in Austin. A glossy coating can look similar on day one and behave completely differently in year three. When a contractor says “polished concrete,” ask what they mean. Is it a floor ground finer and finer and hardened from the inside, or a ground floor with a sealer rolled over it? Both are real products, but they aren't the same purchase.
Before work starts, we agree on the prep, how much stone shows, the shine we'll aim for, any color, and any protective coat. When the job calls for it, we do that from a sample or mockup, so you can see the look before we start. A midcentury ranch remodel in South Austin and a new custom home in Dripping Springs call for different conversations. Working on an existing slab is one job, and planning for a new pour is another.
Aggregate Exposure and Sheen Are Two Separate Choices
Mixing these two up is behind a lot of the letdowns we hear about.
Aggregate exposure is how much of the stone in the concrete shows, and it's set by how deep the first grinding pass cuts:
- Cream: very little stone shows, just the smooth top layer of the slab. It needs a flat, carefully finished pour to look even.
- Salt and pepper: a fine, even scatter of sand and small stone. It's the most forgiving option on a remodel slab.
- Exposed aggregate: a deeper cut that shows larger pieces of stone, sliced open. It needs the right kind of stone close enough to the surface, and not every slab has that.
Sheen is how much the floor reflects light, and it mostly comes down to how far we take the polishing: matte, satin, or high gloss. Depending on the slab, you can have a matte floor with lots of stone showing, or a high gloss cream floor. Picking one doesn't pick the other.
Color is a third choice, separate from both, and we can add dyes and stains along the way. It's worth knowing the difference between polishing and staining before you commit.
How Diamond Grinding and Hardening Work on Site
On a typical job we go in this order: prep, cutting down to the stone you picked, hardening, honing and polishing, then any protective coat you chose. Most buildings around Central Texas sit on a slab poured right on the ground, so we adjust each stage to that concrete and the soil under it.
Prep is the least exciting stage, and usually the one that matters most. Depending on the slab, it can mean pulling up tile, carpet, glue, or an old coating, then repairing cracks, trenches, and patches. We also decide whether the saw cut lines in the slab, called control joints, need a firm but slightly flexible filler.
Hardening is usually what separates a polished floor from one that's only been ground. On most polishing jobs we put down a lithium or sodium silicate hardener, called a densifier, that soaks in and reacts with the concrete. The reaction makes the surface harder, so the polishing that follows can bring out a clear shine and not just a smooth floor. And on a floor that takes a beating, that harder surface is built to hold up better.
Dust control depends on the job and the space, and it often means HEPA dust extraction on the grinders and a closed off work area. In a home you're living in or a business that's open, we'll go over the dust plan with you during the consultation.
How Much Does Concrete Polishing Cost in Austin?
We don't post a flat price per square foot, because two floors the same size can need very different amounts of work. A home slab of 1,200 square feet in Westlake is a different job from a warehouse floor of 5,000 square feet in Round Rock. A retail showroom in Cedar Park is different again. Here's what actually moves the price:
| Factor | Why it changes the price |
|---|---|
| Existing flooring removal | Pulling up tile, carpet, and glue is labor before polishing even starts |
| Slab condition and repairs | Cracks, trenches, patches, and chipped or flaking concrete all add prep work |
| Aggregate exposure | A deeper cut means more passes and more tooling wear |
| Sheen level | More shine means more polishing passes |
| Edge and detail work | Perimeters, stairs, and tight rooms are slower than open floor |
| Access and phasing | Upper floors, tight parking, and after hours work all add time |
| Color and treatments | Dyes, stains, and protective coats are extra steps |
Our Austin polished concrete cost guide has the full breakdown, including how to read what a quote covers and what it leaves out.
How We Compare
| Factor | What We Often See Elsewhere | Austin Polished Concrete Floors |
|---|---|---|
| Before the quote | Quoted from photos or area alone | A test grind on site when the slab calls for one |
| How the finish is written up | A grit number on the quote | Written scope covering stone exposure, sheen, hardener, and what's left out |
| Dust management | Basic extraction | A dust plan for the job, often with HEPA grinders and closed off work areas |
| Honest alternatives | Polishing pitched no matter the slab | We point you to an overlay or epoxy when the slab suits them better |
When a Different Flooring System Fits Better
Polishing isn't always the right answer. If the slab is badly damaged, heavily patched, or too soft to take a finish, a polishable overlay can give you a fresh, even surface instead. That's a thin new layer of concrete we put over the old slab and then polish.
Workshops, garages, and some commercial kitchens need a floor that stands up to chemicals and keeps liquids from soaking in, which is where an epoxy system can fit better. If a slab can't take full mechanical polishing and you still want gloss, grind and seal is a fair middle ground. Plan on recoating it down the road, though.
We'd rather tell you that on the first visit than after the tooling shows up.
