01 / Finish
Polished
Mechanically ground and densified to a factory-hard, light-catching surface. The most durable floor we pour, and the lowest maintenance.
Decorative & Structural Concrete / Denver
Concrete, treated as a finish.
Grayline pours, grinds, and seals concrete for homes and job sites across the Front Range. Floors, counters, and hardscape by a crew that treats every slab like it will be seen.
Licensed, bonded, and insured in Colorado
Licensed & InsuredOwn Formwork CrewSample-Board GuaranteedFront Range Since 2009
What we pour
All services Full-service concrete, one crew.
From a structural footing to a hand-troweled microcement wall, we self-perform every stage so the finish is ours to stand behind.
01
Polished Concrete Floors
Ground, honed, and densified slabs with a soft sheen. Ideal for shops, lofts, and open-plan homes that want a floor with no covering at all.
Learn more02
Microcement & Wall Finishes
Thin troweled overlays that wrap floors, walls, showers, and stairs in a single seamless surface. Warm underfoot, waterproof when sealed.
Learn more03
Concrete Countertops & Vanities
Cast and ground to order in the color and edge you choose. Sinks, drainboards, and waterfalls integrated in the pour.
Learn more04
Stamped & Decorative Flatwork
Patios, walkways, and drives with texture and integral color. Built for Front Range freeze and thaw, not just for the photo.
Learn more05
Epoxy & Resin Coatings
High-build resin systems for garages, breweries, and warehouses. Chemical resistant, slip rated, and poured in a day.
Learn more06
Structural & Foundations
Footings, slabs, and retaining walls formed and placed in-house. The part nobody sees, done so the finish lasts.
Learn more
The difference
A finish, not just a slab.
Most crews pour flat, grey, and gone. We came up as finishers first, which is why we think about the last pass before we ever set a form.
Concrete is a material with grain, color, and light in it. Ground back it glows. Cast against timber it holds the wood. Troweled thin it wraps a room seamlessly. Our job is to get that out of the mix and make it last through a Colorado winter.
2009
Pouring since
Founded in Denver
900+
Projects finished
Homes & job sites
6
Finish systems
One crew, all of them
14
Day typical timeline
Consult to seal
Signature finishes
Surfaces with a point of view.
Six finish systems we pour in-house, each suited to a different room, budget, and level of wear.
02 / Finish
Microcement
A two to three millimeter troweled skin over almost any substrate. Seamless across floors, walls, and showers, in a range of hand-tinted tones.
03 / Finish
Board-Formed
Walls and features cast against real timber so the grain reads in the concrete. A tactile, architectural finish for fireplaces and entries.
04 / Finish
Exposed Aggregate
Surface cement washed back to reveal the stone inside the mix. Grippy, timeless, and a Front Range patio classic.
Selected work
Full portfolio Recent pours.
A few of the floors, counters, and slabs we have finished across the metro.
PolishedHighland Loft Floors
1,800 square feet of ground and polished slab across a converted warehouse residence, seams cut to line up with the windows.
MicrocementBoulder Kitchen In Microcement
Floors, island, and a full backsplash wrapped in one hand-tinted microcement tone, with an integrated cast sink.
CommercialBrewery Taproom Slab
A 4,000 square foot polished and sealed floor built to take kegs, forklifts, and a Saturday crowd without a mark.
Client word
Trusted on site.
They talked us out of tile and into a microcement shower. Two years of hard use and it still looks like the day they sealed it.
I hand Grayline the slab schedule and stop thinking about it. Formwork is square, pours are on time, and the finish is theirs to stand behind.
The countertop they cast matched my sample board exactly. Clients ask about it before anything else in the room.
How it works
From pour to walkthrough.
Every Grayline job runs the same six stages, so you always know what happens next.
01
Consult & Walk
We visit the space, take measurements, and talk through how the surface will actually be used before quoting a number.
02
Sample Board
You approve a physical sample in the exact color, finish, and sealer we will pour. No surprises after the truck leaves.
03
Formwork & Prep
We build our own forms, set reinforcement, and prep the substrate. The unseen work that decides whether a finish lasts.
04
Pour & Place
Concrete is placed, screeded, and floated by finishers, not laborers. Timing is everything and we own every minute of it.
Front Range
Poured, ground and sealed across the Front Range.
Common questions.
How long before we can walk on and use a new floor?
You can usually walk a finished slab in 24 to 48 hours. Heavy furniture and full use come after the sealer cures, which is typically 7 days. We give you an exact schedule for your system at the sample-board stage.
Does polished or sealed concrete crack?
Concrete moves, so we control where it cracks instead of pretending it will not. Saw-cut and tooled control joints are placed by design, and on decorative work we lay them out to read as part of the pattern.
Can you finish concrete that is already poured?
Often, yes. Existing slabs in sound condition can be ground and polished, skimmed with microcement, or coated with resin. We test and moisture-check the slab first and tell you honestly if it is a candidate.
Is this work suitable for the Front Range climate?
Everything we pour outdoors is mixed, air-entrained, and sealed for freeze and thaw. Indoor floors are unaffected by weather. Climate is exactly why we do our own formwork and curing rather than sub it out.
Start a project
Have a slab in mind?
Tell us about the space and the finish you want. We will walk it with you and bring a sample board.
