Center Post, Furnace and a Crack: An Edmonds Garage in Tidal Wave

A 484 sq ft Edmonds garage with a center post, furnace stand and oil stains got Tidal Wave flake Penntek polyurea on the floor and 40 ft of stem walls.

Tidal Wave flake garage floor seen from the driveway of an Edmonds home

A steel post holding up the middle of the garage. A furnace on a stand in the corner. Oil stains where two cars had parked for years and a crack wandering across the slab. This Edmonds two-car garage had a lot going on for 484 square feet, and the homeowner wanted all of it cleaned up under one floor.

In October 2024 our crew installed a garage floor coating in Edmonds with Certified Penntek polyurea in Tidal Wave flake. One day, with the floor and the low concrete walls around it coated in the same finish.

Before: oil shadows and an old crack

The free consultation was in early October 2024. A scratch test checked the concrete's hardness. Moisture readings came in at 4.4% and 4.6%. The slab was in OK shape structurally, but it had dark oil shadows under both parking spots, scattered paint drips and a crack running out from near the post.

The Penntek warranty job card on install day noted 484 square feet of floor, 40 feet of verticals and an air temperature of 55°F.

Coating up the walls, not just across the floor

Those 40 feet of verticals are the short concrete stem walls along the garage edges. Most bare garages have a line of grime where the floor meets the wall, and that is where water and dirt collect. Coating the verticals turns that corner into one continuous, wipeable surface. Here is the sequence:

  1. Diamond grind the floor and the verticals, then vacuum.
  2. Fill the crack with Penntek Mender HD.
  3. Pure polyurea basecoat, over 99% solids, with no fillers.
  4. Broadcast Tidal Wave flake, scrape and collect.
  5. Polyaspartic topcoat with FadeLock™ UV stability.

The crew also worked tight around the base of the steel post and under the furnace stand, so there are no bare rings or edges left behind. More on how we sequence a job is on our process page.

Tidal Wave in an older Edmonds garage

Tidal Wave Evolution mixes blue-grey, white and charcoal chips. With cream walls and a brick front, it gives the garage a cool, clean look that still feels at home in a Northwest house. Light enough to brighten the room, busy enough to hide wet tire tracks.

What makes this floor different from epoxy

People search for an epoxy garage floor. What we install is Certified Penntek polyurea. Three things stand out on a garage like this one:

  • Bond. A chemical bond to the concrete at over 1,300 PSI. Before the coating comes up, the concrete will come up.
  • Flex. The basecoat moves with the slab, so the old crack stays covered.
  • UV. FadeLock™ keeps the topcoat from yellowing or ambering, even with the door open on sunny afternoons.

The epoxy vs polyurea breakdown on our blog explains why typical epoxy often struggles by years 3–5. For proof on film, watch the Penntek Stretch Test.

Polyurea garage floors in Edmonds

This house sits on a tree-lined lot with a mossy driveway, which says a lot about Edmonds weather. Rain and needles get tracked into the garage most of the year. A coated floor and coated stem walls mean a quick hose-down instead of scrubbing stains out of bare concrete.

Browse our Edmonds concrete coating page, or see an Edmonds garage we finished in Mount Everest for a lighter option.

Questions about this kind of garage

Can you coat around a support post?

Yes. We grind and coat right up to the base of steel posts and columns. The flake and topcoat run tight to the steel so there is no bare ring of concrete left.

What are verticals on a garage floor quote?

Verticals are the low concrete walls or curbs around the edge of the slab. Coating them gives a continuous surface that is easier to clean and keeps grime from collecting in the corner.

Will old oil stains bleed through?

Diamond grinding removes the stained surface layer, and the basecoat bonds to clean concrete. We look at heavy contamination at the consultation and plan for it.

Ready to see your own garage in a new color? Book a free in-home quote or call 425-226-6085.