A Sammamish home's front walk, entry landing and side path, ground and coated in Blue Granite hybrid flake Penntek polyurea in June 2025.
Not every project starts inside a garage. This one was the concrete wrapped around the front and side of a modern Sammamish home: a strip along the asphalt drive, an entry landing by the front door, and a narrow side path that runs back past the utility hookups and shrubs.
The concrete was plain, grey and starting to stain in the shady spots under the street tree. The homeowner wanted it to match the stone veneer and dark siding. In June 2025 we installed a walkway coating in Sammamish using Certified Penntek polyurea in Blue Granite, part of the Hybrid Terrazzo Flake System.
We walked the site at a free consultation in early May. The concrete was sound, with clean control joints and no heaving. Its problems were cosmetic. Dark water marks, grime along the edge by the asphalt and the green tint that shows up on any Northwest slab that stays shaded.
There was also a recessed rectangle in the front landing, the kind of cutout left around a utility box. The crew worked the coating around it so the opening stayed usable.
Outdoor jobs need a dry window, and June gave us one. You can read how we handle these on our walkway floor coating page.
Blue Granite is a light, cool blend. Up close you see white, grey and blue-grey pieces. From the street it reads as a pale granite that sits nicely against the stacked stone and the dark metal siding. It brightens the front of the house and gives the entry a clear edge where it meets the asphalt.
Blue Granite comes from the Hybrid Terrazzo Flake System, which has a denser, more stone-like look than a standard flake blend. Ask to see it in person at your consult, since photos never quite show the depth.
A walkway takes everything a garage does plus direct sun, standing water and freeze-thaw. Rigid coatings like typical epoxy can crack as the slab moves, and they yellow in sunlight. The Penntek basecoat stretches with the concrete instead. Watch the Penntek Stretch Test to see it flex.
Sunlight is handled by FadeLock™ in the topcoat. It passed a 16-hour QUV accelerated UV test and won't yellow or amber, and the flake is UV stable too. Our post on UV damage and Seattle's sunshine hours explains why even our grey climate gets enough sun to matter.
And the bond holds. Over 1,300 PSI, chemically bonded through a silane adhesion promoter. Before the coating comes up, the concrete will come up.
Sammamish sits up on a forested plateau, which means shade, damp and moss on any concrete that doesn't get afternoon sun. A non-porous topcoat keeps that growth on the surface where a hose and a stiff broom can clear it. We cover more outdoor options in coating basements, patios and driveways.
Most of our Sammamish work is still garages, like a solid Olympus White garage floor we finished nearby. Start with our concrete coatings in Sammamish page to see what else we do in town.
Yes. The same Certified Penntek system we use in garages works outdoors, because the basecoat flexes with freeze-thaw and the topcoat resists UV. We schedule outdoor jobs around dry weather.
Moss needs pores and cracks to take hold. The polyaspartic topcoat is non-porous, so anything that lands on it stays on the surface and rinses off with a hose.
The full flake broadcast leaves texture under the topcoat that you can feel underfoot. We don't publish slip ratings, so we suggest walking a sample at your consult.
Ready to finish the outside of your house to match? Book a free in-home quote or call 425-226-6085.
Here's just a few of our previous projects.
