A Woodinville garage with a shiny red-brown stained and sealed floor was ground down and coated in Silver Creek flake polyurea in February 2025, snow outside.
Some garage floors are not bare concrete at all. This Woodinville garage had a deep red-brown stain with a glossy sealer on top. It probably looked sharp when it was new. Years later it was blotchy, with dark patches, worn paths and a shine that made every scuff stand out. Under the lights it looked more like a wet basement than a garage. The owner wanted something lighter, cleaner and easier to live with, a big open room for cars and a row of bikes.
In February 2025, with snow on the driveway, Cascade installed a garage floor coating in Woodinville with Certified Penntek polyurea in Silver Creek flake. The red is gone, ground off completely, and the room feels twice as bright.
Cascade visited for a free consultation at the end of January 2025. A stain and sealer system brings up a simple question: what is actually holding on to the concrete? A sealer sits on top. Stain soaks in only a little way. Neither one is a sound base for a new coating, so the plan was to grind it all away and bond to fresh, open concrete.
The first day was all about removal. Industrial diamond grinders took the sealer and the stained surface down until the concrete was clean and gray. The next day the crew came back to coat.
Snow sat on the driveway while the work went on inside. A garage floor is an indoor job, so a cold week does not have to stop it.
Silver Creek Evolution is a mix of charcoal, gray and white chips with a cool, slightly silvery feel. After a floor that soaked up light, the change is obvious. With white walls and the big arched door, the room now feels open and clean. The flake also hides scuffs and tire marks that the old glossy stain showed off.
People often ask if a new coating can go straight over an old one. It is tempting, since it saves a step. The trouble is that the new floor is only as strong as whatever is under it. If the old sealer lets go, everything on top goes with it. Our post on whether Penntek can go over an existing coating walks through the details.
Grinding to bare concrete lets the pure polyurea basecoat form a chemical bond with the slab at over 1,300 PSI. Before the coating comes up, the concrete will come up. See it tested in the Penntek Hammer Test. The floor is backed by a limited lifetime warranty from Penntek, the manufacturer. Cascade is also a Home Depot service provider and won Penntek's Picture Perfect award.
Woodinville gets long wet winters and the odd snow week, like the one during this install. Garages here take a lot of melt and road grit. A sealed flake floor handles that better than stain and sealer, which wear through in the traffic paths. Browse more garage floor coatings around Woodinville and nearby Bothell, or see a Woodinville garage in Tidal Wave for a blue-gray option.
Not directly. The sealer and stained surface get diamond ground off first so the polyurea bonds to clean concrete. That is what happened on this job.
No. Grinding removes the stain at the surface, the basecoat covers the slab, and a full broadcast of flake hides everything below it.
It can look good at first. The sealer wears through in the tire paths, shows every scuff and needs resealing. A bonded polyurea floor with a non-porous topcoat holds up better to cars and wet weather.
Tired of a floor that shows every scuff? Book a free in-home quote or call 425-226-6085.
Here's just a few of our previous projects.
