Old coating peeling, slab reading 6.0% moisture. This Gig Harbor garage got a moisture barrier and Mount Everest flake Penntek polyurea in February 2026.
This Gig Harbor garage had a coating already. It just wasn't holding on. The old floor paint had worn and peeled across the slab in patches, leaving bare concrete showing through blotches of grey and teal. Cars, shelving, a ladder and a water heater all shared the space, and the floor looked tired no matter how often it got swept.
In February 2026 Cascade replaced it with a garage floor coating in Gig Harbor using Certified Penntek polyurea in Mount Everest flake. The bigger story is underneath: this slab needed a moisture barrier, and it got one.
At the free consultation in late January 2026, the moisture meter went down in four spots and read 4.9%, 5.7%, 5.1% and 4.9%. On install day the slab read 6.0%. Moisture moving up through concrete pushes against whatever sits on top of it, and that is one of the most common reasons garage coatings peel.
The rest of the numbers: 828 square feet of floor plus 51.5 square feet of concrete stem walls, the slab at 59.4°F, the air at 67°F and 61.2% humidity. Cascade records all of it on every job because it goes on the Penntek warranty registration.
A moisture barrier adds time, so this install ran across several days in late February 2026:
Mount Everest Evolution is a light blend of white, grey and soft tan chips. In this garage it brightens everything, especially with the flake carried up the stem walls so the floor and the base of the walls read as one surface. Light flake hides dust and dried water spots well, which matters in a garage where cars come in wet most of the year.
The old coating failed from below and from wear. The new floor is built against both. The moisture barrier deals with the slab. The Penntek basecoat bonds chemically with the concrete at over 1,300 PSI, so before the coating comes up, the concrete will come up. It is also flexible, so it moves with the slab through temperature swings instead of cracking.
The topcoat is non-porous and resists hot tire pickup. Penntek floors are built for up to 5x the lifespan of typical epoxy, and you can watch the durability tests on our demo page. If your own floor is starting to peel, our post on what to do about a peeling garage floor is a good place to start.
Gig Harbor sits on the Kitsap Peninsula across the Tacoma Narrows, a long way from our Woodinville home base. The floor is the same as one installed anywhere else: tested, ground, barrier where needed, and registered for a limited lifetime warranty backed by Penntek. Penntek has dealers in 200 markets, so the floor can be serviced over its whole life. If you are new to the area, the City of Gig Harbor site is a handy starting point for local info.
Most of our work is across the Sound, from our Seattle-area garage floor coatings to the Eastside and Snohomish County. Our post on why garage coatings peel in the Seattle area covers the climate side of this job.
This garage is in Gig Harbor, outside our usual Eastside and Snohomish County area. Call 425-226-6085 and ask about your address. Every floor gets the same testing, process and Penntek warranty registration.
It's a two-layer system that goes on the slab before the polyurea basecoat. Cascade decides based on moisture testing at the consultation and on install day. This slab read 6.0% on install day and got the barrier.
Not directly. The old coating is ground off down to clean concrete first, because a new floor bonded to a failing layer will fail with it.
Want to know what your slab reads? Book a free in-home quote and Nicole will set up the moisture and hardness test.
Here's just a few of our previous projects.
