Custom Epoxy Floors & Epoxy Coatings in Spearfish, SD
Black Mountain Epoxy Floors is a trusted epoxy flooring contractor serving Spearfish, South Dakota and the Black Hills region, with the ability to travel nationwide for the right project. We specialize in residential and commercial epoxy coatings, installing epoxy floors built on a proven Sherwin-Williams system — the same materials trusted in airport hangars, water treatment facilities, and mining operations — with professional surface prep equipment and a full, uncompromised cure time. Whether it’s a garage floor or a commercial facility, the result is a floor that’s not just beautiful, but built to perform for decades.
Our Coating Options
Every floor gets a system matched to how it’s actually used — a commercial kitchen and a residential garage don’t need the same finish.
Full Flake Epoxy Floors Our most requested residential option. Colored flake is broadcast into the base coat for a textured, dimensional finish that hides minor imperfections and adds slip resistance.
Metallic Epoxy Coatings A high-end, pigmented finish that creates a three-dimensional, marbled look — popular for showroom floors, retail spaces, and statement garage floors.
Solid Color Epoxy A clean, uniform finish for commercial and industrial spaces where function and easy maintenance matter more than texture.
Water-Based & Acid Stains For a more natural, variegated concrete look, often used in combination with a protective topcoat.
Every option is finished with the same ArmorSeal Rexthane 1 topcoat system — the finish look changes, the durability underneath doesn’t.
About Us
A Floor Coating System Built for Decades, Not Just a Weekend
Most epoxy flooring quotes look the same on paper. What separates a floor that lasts two years from one that lasts twenty is almost never the color of the flake — it's the system underneath it and the time given to cure it correctly. Black Mountain Epoxy Floors installs a commercial-grade, two-part system: a TileClad epoxy base coat paired with an ArmorSeal Rexthane 1 polyurethane topcoat, both manufactured by Sherwin-Williams. This isn't a big-box DIY kit or a generic epoxy blend — it's the same product line trusted by commercial flooring contractors for chemical plants, water treatment facilities, and airport hangars, where a floor failure isn't an inconvenience, it's a liability. The base coat provides adhesion and structure. The topcoat is where the real performance comes from — it's what gives the floor its density, hardness, and long-term resistance to impact, abrasion, and chemical exposure. Combined, the system is built to hold up to daily vehicle traffic, hot tires, dropped tools, road salt, and South Dakota's temperature swings without peeling, yellowing, or wearing thin. Where this exact system gets used: Water and wastewater treatment facilities Oil and gas operations Mining sites Airport hangars Schools, laboratories, and cleanrooms Heavy-traffic commercial and industrial flooring If a coating system is trusted to perform in an airport hangar or a mining facility, it's more than capable of handling a garage floor.
The Equipment Matters as Much as the Material
Premium Epoxy Flooring Installed with Precision
A floor coating is only as good as the surface it’s bonded to. Before any coating goes down, the concrete has to be properly ground, profiled, and prepped — and this is where a lot of epoxy jobs go wrong before they even begin.
Black Mountain Epoxy Floors uses professional surface prep equipment engineered by Niagara Machine, a company built by contractors, for contractors, specifically for floor preparation. This isn’t rented big-box equipment — it’s purpose-built machinery designed to create the correct surface profile for a coating system to mechanically bond to concrete, rather than just sit on top of it. A poorly prepped floor is the number one reason epoxy coatings bubble, peel, or fail early, regardless of how good the coating itself is.
Our Services
Professional Epoxy Flooring Solutions
Create a clean, durable, showroom-quality garage floor that resists stains, hot tire pickup, and daily wear.
Perfect for garages, basements, laundry rooms, workshops, patios, and utility spaces.
Why We Don't Rush the Cure
Here’s something worth knowing before you hire any epoxy contractor: cure time is not optional, and rushing it is one of the most common corner-cutting practices in this industry.
Some contractors advertise a “one-day install” — and technically, it is one day. But that day often starts before sunrise and runs past midnight, because the crew is racing to hit minimum cure windows between coats before foot and vehicle traffic returns to the space. When a topcoat gets applied before the base has fully cured, or the floor gets walked on before it’s ready, the bond between layers is weakened — and that’s where premature peeling and wear starts.
Black Mountain Epoxy Floors lets the base coat cure overnight, undisturbed, before applying the topcoat the next day. It typically means the full job takes one to two days instead of one rushed one — but it means the system cures the way the manufacturer designed it to, and the floor performs the way it’s supposed to for the long haul.
Ready to Upgrade Your Floors?
Whether you're renovating your garage or installing flooring for a commercial facility, Blake Mountain Epoxy delivers durable, beautiful epoxy flooring built to perform for years.
Our Process
- Assessment & Quote — We evaluate the space, discuss how the floor will be used, and recommend a system suited to that traffic level.
- Surface Preparation — Mechanical grinding and profiling with Niagara Machine equipment to remove coatings, contaminants, and create proper bonding surface.
- Repair — Cracks, pitting, and surface damage are addressed before any coating is applied.
- Base Coat Application — TileClad epoxy base coat is applied and left to cure fully overnight.
- Topcoat Application — ArmorSeal Rexthane 1 polyurethane topcoat is applied the following day for maximum hardness and chemical resistance.
- Final Walkthrough — We don’t consider a job finished until you’ve walked the floor and are satisfied with it.
Serving Spearfish, the Black Hills & Beyond
Black Mountain Epoxy Floors is based in Spearfish, South Dakota, serving residential and commercial clients throughout the Black Hills region — and we travel nationwide for larger commercial and industrial projects. If your project is outside our immediate service area, reach out — we’re happy to discuss travel for the right job.
Frequently Asked Questions
Are epoxy floors a good option in South Dakota?
Yes. Epoxy and polyurethane coatings are specifically engineered to handle temperature swings, moisture, and de-icing chemicals — all common in South Dakota winters. A properly installed, commercial-grade system resists cracking and peeling from freeze-thaw cycles far better than bare concrete or paint.
How long does epoxy floor installation take?
A properly installed epoxy floor system typically takes one to two days, allowing the base coat to fully cure overnight before the topcoat is applied. Contractors advertising true single-day installs are often compressing cure times, which can shorten the lifespan of the floor.
How long does an epoxy floor last?
A commercial-grade epoxy and polyurethane system typically lasts 10 to 20 years, depending on the environment and traffic level. In residential garages, epoxy often outlasts a decade with ease since it’s built to withstand vehicle traffic, temperature changes, and moisture exposure. In high-traffic commercial or industrial settings, lifespan varies by use case but still significantly outperforms bare concrete or painted floors.
How much does an epoxy floor cost?
Cost depends primarily on square footage and the coating system chosen. As a general guide:
- Single-bay garage (10′ x 15′): around $2,500
- Two-car garage: around $5,000–$10,000
- Three-car garage: $15,000–$20,000
- Large commercial or industrial spaces: $20,000–$80,000+
Exact pricing depends on surface prep needs, coating type, and square footage — a free on-site or virtual quote gives the most accurate number.
What makes Black Mountain Epoxy Floors different from other epoxy contractors?
Black Mountain Epoxy Floors uses a commercial-grade Sherwin-Williams TileClad base and ArmorSeal Rexthane 1 topcoat system — the same coating system trusted in airport hangars, water treatment facilities, and mining operations — combined with professional Niagara Machine surface prep equipment and a full overnight cure between coats. Many local competitors use lighter-duty coatings or compress cure times to finish in a single rushed day; we don’t.