A two-car-deep Seattle garage with tire-stained concrete, coated in Smoke flake with Certified Penntek polyurea in a single April day.
Some garages are wide. This one is long. It's a single-car-wide, two-cars-deep garage in a Seattle building, with grey walls, a board-formed concrete wall at the far end, and a door that opens onto a shared parking aisle. Before the work, the slab was stained down the middle from tires and dark with water marks where wet cars had dripped for years.
The homeowner wanted it to look as finished as the rest of the home. In April 2025 Cascade installed a garage floor coating in Seattle with Certified Penntek polyurea in Smoke flake. One day, end to end.
The free consultation was in late March 2025. Shelving and stored rolls lined one wall, and the car was parked right on the slab. The crew tested the concrete, and the moisture meter read 4.8%. Cascade meters every slab before quoting, because moisture is the hidden reason many garage coatings fail.
The surface itself was sound but tired. Tire tracks ran the full length of the floor, a dark stain sat at the entry, and the concrete was rough and dusty along the walls.
Working in a narrow garage that opens onto a shared aisle takes some planning. Everything happened on April 9, 2025:
The floor stops cleanly at the garage door threshold, so the coating stays inside the unit and off the shared aisle.
Smoke is a mix of grey, black and white chips. In a garage with dark grey walls it ties everything together, and the white chips pick up the overhead light so the long room doesn't feel like a tunnel. It also hides tire tracks and the grit that comes in from the parking aisle.
This garage gets driven into every day, often on wet tires. A few things make Certified Penntek polyurea a better fit than typical epoxy for that kind of use:
Our post comparing Penntek and epoxy for garage floors goes deeper. You can also hear from a Penntek floor owner in this customer video.
Every floor gets a limited lifetime warranty backed by Penntek, and Penntek has dealers in 200 markets, so service is available long term.
A lot of newer Seattle housing comes with tuck-under or tandem garages like this one. They are narrow, often share an aisle or driveway with neighbors, and get very little daylight. A bright, easy-to-clean floor makes them feel like part of the home instead of a concrete box.
See more on our concrete coating in Seattle page. For another long, narrow space, look at a Seattle garage we coated in Slate Stone and Tidal Wave, or see a Seattle business floor in Silver Creek. Our reviews page has what other homeowners say.
Yes. The crew masks the threshold, keeps equipment inside the unit as much as possible, and stops the coating cleanly at the door line. It helps to give neighbors a heads up about install day.
For a garage this size, yes. Grinding, basecoat, flake and topcoat all happened on the same day here. The crew tells you when you can walk on it and park.
A mid-tone blend like Smoke hides dirt, tire tracks and dust better than a very light or very dark floor. It's a common pick for garages that get driven into daily.
Have a long, narrow garage of your own? Book a free in-home quote or call 425-226-6085.
Here's just a few of our previous projects.
