A long Mountlake Terrace tandem garage with a crack network and two drains got Mender HD repair and a Tidal Wave flake Penntek polyurea floor in one day.
This Mountlake Terrace garage is one long room. A single door at the front, a window at the very back and enough depth to park one car behind another, with a workbench, gray cabinets and shelving along the sides. The slab had cracks running across it, two floor drains and years of grime ground into the concrete. The homeowner wanted it to feel like part of the house.
In October 2024 our crew installed a garage floor coating in Mountlake Terrace with Certified Penntek polyurea in Tidal Wave flake. One day of work, from the front door to the back window.
The free consultation was in early October 2024. Moisture readings came in at 4.0%, 3.8% and 4.5% across the length of the slab, and a scratch test checked the hardness. With a garage this deep, we like to test front, middle and back.
The concrete had a network of cracks spreading across the middle, plus stains near the drains. Cracks like these usually come from the slab settling and shrinking over the years. They don't mean the garage is failing. They just need to be dealt with before anything goes on top.
Both floor drains stayed open and working. The crew coated right up to the drain rims so water still runs where it should.
Tidal Wave Evolution is a cool mix of blue-grey, white and charcoal chips. In a long, narrow space, a mid-tone floor keeps things from feeling too dark at the back. With the gray cabinets and butcher-block top, it looks like the garage was designed as one piece.
Here is where the system matters. Typical epoxy is rigid. When a cracked slab moves, rigid coatings tend to crack right along the old lines, and problems often show in years 3–5. The Penntek polyurea basecoat is flexible. It moves with the slab through temperature swings and freeze-thaw. You can see it in the Penntek Stretch Test.
The bond is chemical, at over 1,300 PSI. Before the coating comes up, the concrete will come up. More on this in our post on Penntek vs epoxy for a garage floor.
Mountlake Terrace sits between Shoreline and Edmonds, with many older homes and wet, gray winters. A lot of garages here are older, and many have floor drains, cracks and decades of wear. A coated floor turns that into a space you'd actually want to work in.
Mountlake Terrace is part of south Snohomish County, right next door to Edmonds. See our garage floor coatings in nearby Edmonds, or look at a Mountlake Terrace covered walkway we coated in Fieldstone.
Yes. We grind and coat around the drain rims and keep them open. The finished floor still sheds water toward the drain.
Usually shrinkage and settling as the concrete aged. We fill them with Penntek Mender HD, and the flexible polyurea basecoat bridges them.
The install is one day. The crew gives you walk-on and parking times before they leave, since cure times depend on the weather.
Want to see Tidal Wave and other blends on your own slab? Book a free in-home quote or call 425-226-6085.
Here's just a few of our previous projects.
