Serving Denver and the surrounding metro — Denver, Adams, Arapahoe, Jefferson and Douglas counties, plus the Front Range from Colorado Springs up to Fort Collins
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Concrete Sealing in Denver, CO
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Concrete Sealing in Denver, CO

Concrete Sealing · Denver, CO

Concrete sealing that keeps water and deicer out

Concrete sealing is the lowest cost protection a Denver slab can get, and it works on sound concrete. Bare concrete is porous, so it pulls in water, deicer and oil through the whole surface. Water that soaks in freezes overnight, then pops the top layer off in flakes and craters. We seal driveways, walks, patios, garage slabs, basement floors and shop floors across the Denver metro and the Front Range.

A sealer protects concrete that is already in good shape, and it leaves the slab looking close to normal. Cracks, deep pits and oil soaked spots need repair first, or a full coating over the whole floor. When the slab is past sealing or you want a new look, coating the garage instead makes more sense. Outdoor slabs that want real color and grip belong on our pool deck and patio coatings page.

What We Handle

  • Penetrating sealers for driveways and walks
  • Film forming sealers for stamped concrete
  • Densifier on polished interior floors
  • Anti slip grit in wet areas
  • Pressure washing and diamond grinding
  • Crack repair before the sealer
  • Residential and commercial concrete sealing
  • Free on-site walk-through and quote

Free Concrete Sealing Quote

Tell us about your project — we’ll get right back to you.

What a Colorado winter does to bare concrete

The Front Range runs an aggressive freeze-thaw cycle from fall through spring, and every slab moves with it. Water sits in the pores of bare concrete, freezes overnight, and pushes the surface apart from the inside. You see it as scaling and spalling: thin flakes lifting off, then shallow craters across the top layer. Snowmelt collects just inside the garage door, and that strip is where the damage usually shows up first.

The state sprays magnesium chloride on the highways all winter, and tires carry it home onto driveways and garage floors. It works down into the pores of bare concrete and breaks the surface apart from the inside out. Ice melt on steps, walks and patios does the same, and sun at altitude fades unsealed color. We see the same scaling on bare driveways and walks in Lakewood, Arvada and Westminster every spring.

Which concrete sealing system fits your slab?

Penetrating sealers soak down into the concrete and leave the look of the slab almost unchanged. There is no film sitting on top, so there is nothing to peel, flake or go cloudy in the sun. They block water and deicer, which is what a driveway, a walk or a broom-finish patio needs. This is the usual pick for exterior flatwork that is sound and already close to the color you want.

Film-forming sealers, acrylic or urethane, sit on the surface and add sheen and stain resistance. Stamped concrete, exposed aggregate and interior floors get this family, because the color needs to come back. On a polished or hard-troweled floor we run a densifier first to harden the surface, then seal it. Where a film sealed surface gets wet, we broadcast anti-slip grit such as aluminum oxide into the top coat.

How we seal a slab in Denver

Denver Custom Coatings has been coating floors since 2008, and every sealing job starts the same way. You get a free on-site walk-through and a written quote that holds unless the scope changes. Prep comes next: pressure washing outside, grinding where the sealer needs a mechanical key, and crack repair. A failed old sealer gets stripped off, and the slab dries all the way through before we seal.

Sometimes a sealer is the wrong answer for your slab, and we say so at the walk-through. Concrete that is badly pitted, oil soaked or lifting in sheets needs repair and resurfacing first, then a full coating. Sealed surfaces also get renewed on a cycle, and outdoor film-forming sealers come back sooner than penetrating ones. Watch for water that stops beading on the surface, or a sheen that has gone flat.

Stained and sealed concrete hallway with a green inlaid stripe reflecting the ceiling lights Tan stained and sealed concrete floor in a finished basement with white walls

Ready to get started?

Free, no-obligation estimates across Denver and the surrounding metro.

(720) 691-6294
How We Work

How a Job With Us Runs

From the first walk of the floor to the final one, here is exactly how it goes.

1

Walk the Floor

We come out, look at the actual slab and talk about how the space gets used. Cracks, spalling, oil, old coatings and moisture all get assessed here — because that is what decides the system and the price.

2

Written Quote

You get the price, the prep included, the system going down, and the walk-on and park-on dates in writing. It is free, and the number holds unless the scope changes.

3

Grind and Repair

Diamond grinding — never acid etching — then vacuum, chase and fill the cracks, patch the spalls and treat any contamination. This is most of the job and it is why the floor lasts.

4

Coat and Walk It

Primer, base, flake or pigment, then the clear top coat. We tell you exactly when you can walk on it and when you can park on it, and the job is done when you have walked it with us.

FAQ

Concrete Sealing Questions, Answered

Common questions about concrete sealing across Denver and the surrounding metro. Don't see yours? Give us a call — we're happy to help.

Call (720) 691-6294

What does concrete sealing cost in Denver?
Price comes down to square footage, the condition of the slab, the sealer system you pick, and access to the work area. Every quote starts with a free on-site walk-through. We look at the concrete, measure it, and give you a written number that holds unless the scope changes.
How often does sealed concrete need resealing?
There is no fixed schedule, because sun, traffic and ice melt wear a slab at different rates. Watch the concrete instead. When water stops beading and soaks in dark, or the sheen has gone flat and patchy, it is time to reseal. Outdoor film-forming sealers come back sooner than penetrating ones.
Can you seal a driveway that already has a sealer on it?
Yes, in most cases. If the old sealer is still bonded and in the same family as the new one, we clean the slab and recoat it. If it is peeling, cloudy or flaking, we strip it first, then reseal. Exterior work goes down on dry days, once the slab has had time to dry out.
Will a sealer make my concrete slippery?
A penetrating sealer leaves the surface texture alone, so the grip stays about where it was. A film-forming sealer can get slick when it is wet. On steps, walks, patios and pool decks we broadcast anti-slip grit such as aluminum oxide into the top coat, which keeps the footing rough.
Is sealing enough or do I need a coating?
Sealing protects a slab that is sound and already looks the way you want. A coating rebuilds the surface, hides repairs and changes the color and finish. If you are weighing a sealed floor against polished concrete or an epoxy coating, we will lay out both at the walk-through.
More From Denver Custom Coatings

Explore Our Other Services

Garage Floors in Denver, CO

Garage Floors

A ground, patched and sealed garage floor that shrugs off ice melt, hot tires and oil — and wipes clean with a shop broom.

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Polyaspartic in Denver, CO

Polyaspartic

A UV-stable coating that cures in hours instead of days, goes down in cold weather, and does not amber in the sun like epoxy.

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Epoxy Flooring in Denver, CO

Epoxy Flooring

Hard-wearing epoxy systems for garages, basements, shops and commercial spaces — installed over properly ground and repaired concrete.

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Basement Floors in Denver, CO

Basement Floors

A sealed, warm-looking basement floor that stops concrete dust, cleans easily and does not turn into a problem when water shows up.

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Metallic Epoxy in Denver, CO

Metallic Epoxy

Marbled metallic finishes with real depth — poured, worked by hand and sealed. The floor people actually comment on.

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Flake Floors in Denver, CO

Flake Floors

Vinyl flake broadcast into the base coat, then sealed — texture underfoot, hides dirt and wear, and it is the best value in coatings.

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From Our Blog

Concrete Sealing Guides

Why Choose Us

Why Denver Homeowners and Businesses Call Us

In the Trade Since 1992

Phil has been installing industrial flooring since 1992, and Denver Custom Coatings has 18 years behind it. The person who quotes your floor is the person who grinds and coats it.

We Grind — We Never Etch

Diamond grinding opens the concrete so the primer keys into the slab. Acid etching is faster and cheaper, and it is why most failed floors failed. Prep is where the job is won.

Straight Written Quotes

We walk the floor, price it in writing, and flag honest problems — moisture, contamination, a slab that needs real repair — before you commit. The number holds unless the scope changes.

Built for Colorado

Freeze-thaw, magnesium chloride off the highway and hot tires at altitude are hard on a slab. We specify systems that handle all three, including polyaspartic when the garage runs cold.

Get Your Floor Quoted

Get In Touch With Denver Custom Coatings

Bare garage slab, a basement you are finishing, a peeling floor that needs redoing, or a shop floor that has taken all it can? Call or send the form and we will walk the floor with you and hand you a free written quote.

  • (720) 691-6294
  • Denver, CO and the surrounding metro — Open 7 days a week
  • Free on-site walk-through and written quote

Get a Free Quote

Tell us about your project — we’ll get right back to you.

Call (720) 691-6294