About Black Diamond Concrete Coating
Black Diamond Concrete Coating is a family-owned and operated concrete coating contractor serving Appleton, Neenah, Oshkosh, and Green Bay, Wisconsin since 2015. Specializing in both residential and commercial applications, they offer comprehensive epoxy floor coatings including garage floors, metallic finishes, full-flake coatings, and quartz applications. Services extend to concrete polishing, grinding, sealing, and custom floor markings. The company distinguishes itself through a lifetime warranty on labor and materials, high-quality epoxy products, and meticulous attention to detail. Black Diamond also provides garage cabinetry and storage solutions, along with specialized applications like sports court coatings. As a locally-owned business not affiliated with franchises, they prioritize quality craftsmanship and customer satisfaction throughout the region.
What they say about their work
Taken from the business's own website. These are its claims; we have not verified them. Listing last refreshed October 17, 2026.
- Experience
- 11 years in business, established 2015
- Warranty
- LIFETIME warranty on labor and materials. Covers floor repair or replacement if failure is due to installation issues or product problems. Does not cover exterior concrete, accidental damage, moisture, or concrete cracking.
- Coating systems
- Full-Flake Coating
- Solid Color Coating
- Metallic Coating
- Quartz
- Broadcast Sand Coating
- Surface prep
- Concrete Grinding
- Credentials stated
- Brown County Home Builders Association, Home Builders Association of the Fox Cities
- Partnerships
- Brown County Home Owners Association, Fox City Home Builders Association
- Areas they list
- Outagamie
- Brown
- Kewaunee
- Calumet
- Manitowoc
- Sheboygan
- Fond du Lac
- Winnebago
- Shawano
- Waupaca
- Waushara
- Green Lake counties. Specifically Appleton
- Neenah
- Oshkosh
- Green Bay
- WI
Coating types offered
Basement Floor Coating
Epoxy and polyaspartic coatings for basement floors - moisture resistant
Commercial Floor Coating
Epoxy and polyaspartic coatings for warehouses, shops, showrooms, and commercial spaces
Concrete Polishing
Polished concrete floors - grind and polish existing concrete to a shine
Flake Epoxy
Decorative flake/chip epoxy floor coating - hides imperfections, adds texture
Floor Prep & Repair
Concrete grinding, crack repair, and surface preparation before coating
Garage Floor Epoxy
Standard epoxy coating for residential garage floors
Metallic Epoxy
Decorative metallic epoxy flooring with unique swirl patterns
Polyaspartic Coating
Premium 1-day polyaspartic floor coating - faster cure, higher durability
How we graded Black Diamond Concrete Coating
Grades come from public information, the same way for every installer: Google reviews, the credentials and insurance a shop states on its own site, how long it has worked in this trade, and how complete its profile is. Nobody pays for a grade.
- 4.7 stars from 47 Google reviews, #4 of 12 Fox Valley installers by number of reviews.
- One of 8 Fox Valley installers graded A.
Contact and hours
N266 Stoney Brook Rd Ste A
Appleton, Wisconsin 54915
Contact us to schedule an appointment.
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Before you hire any installer
- Ask how they prep the slab. Diamond grinding is the standard; acid etching and quick sanding are not.
- Ask whether they test for moisture first. Wisconsin slabs often fail without it.
- Get the coating system, the number of coats and the warranty in writing.
- Compare at least two quotes for the same system and square footage.