Solid Color Epoxy Floor: 100% Solids vs Water Based, and What Mil Means

A solid color epoxy floor runs $3 to $7 per square foot installed, the lowest price of any real coating system. The only spec that decides whether you get a floor or a paint job is solids content. A water based kit dries to about 3 mils and a 100% solids pour cures at 10 to 20 mils, and that gap is the whole difference.

The short version

• Overview: $3 to $7 per square foot. The cheapest system, one color, no flake. Solids content decides whether it lasts.
• My take: The kit at the home center is technically epoxy and functionally paint. If you want a solid color that holds up, you are buying solids content and mil thickness, not the word on the can.
• How we price: From the EpoxyTimes rate card, built from real installed jobs.

What solid color epoxy actually is

A solid color epoxy floor is a two part epoxy, a resin mixed with a hardener, pigmented in one flat color and rolled or squeegeed onto prepared concrete, with no flake or metallic worked in. It is the plainest coating in the catalog, which is why it is the cheapest. What separates a good one from a bad one is solids content: the share of the liquid in the can that stays on the floor after everything else evaporates, measured by volume. A 100% solids epoxy leaves behind almost everything you poured; a 50% solids coating leaves about half, and the rest flashes off into the air.

This is where the box store kit problem starts. The home center kit is technically epoxy, so the label is not lying, but it behaves like paint because it goes on thin and stays thin. Wet film thickness is how thick the coating sits the moment you roll it on; dry film thickness is what is left after the water or solvent flashes off and cures. A thinned water based kit goes on at 5 or 6 wet mils and cures to 2 or 3 dry mils, about a heavy coat of porch paint. A 100% solids pour goes on at 10 to 15 mils and stays there. Same word on the can, very different floor.

What a solid color epoxy floor costs

Installed, a solid color epoxy floor runs $3 to $7 per square foot, the lowest range of any system on the rate card. It sits at the bottom because it is the least material: one pigmented coat, no flake, no metallic, no quartz layers.

System	Installed per square foot	Why it sits there
Solid color epoxy	$3 to $7	One color, no flake, the least material.
Flake	$5 to $9	Vinyl flake broadcast in. Hides slab flaws and adds grip.
Polyaspartic	$5 to $12	Fast cure and UV stable. Rewards a skilled crew.
Metallic	$7 to $12	A marbled look. Labor and skill drive the price.
Quartz	$7 to $15	Quartz broadcast in layers. Toughest and priciest.

Figures from the EpoxyTimes rate card, national baseline. Updated September 4, 2026. A consumer DIY kit is a different animal at roughly $1 to $3 per square foot in materials only, not an installed floor. Price a solid color floor for your own space with the epoxy cost calculator, and see the full breakdown by system and space on the cost pillar.

100% solids vs water based epoxy

The choice between 100% solids and water based epoxy is really about how thick a floor you want and where you are legally allowed to buy it. Here is the conversion almost no product page shows you: dry film thickness equals wet film thickness times the solids fraction, so the lower the solids, the thinner the floor.

Coating type	Typical volume solids	Dry film per coat
100% solids epoxy	About 100%	10 to 15 mils
Solvent based epoxy	About 50 to 60%	2 to 5 mils
Water based epoxy	About 40 to 50%	2 to 3 mils
Box store epoxy kit	About 48 to 50%	2 to 3 mils

Volume solids ranges from manufacturer technical data sheets.

Benjamin Moore’s Corotech V430, a 100% solids epoxy floor coating (2018 data sheet), specs 10 to 15 mils dry per coat and can be built to 20 mils or more. Westcoat’s Thin Film Water Based system (2025 spec) builds just 5 to 7 dry mils across a primer and a topcoat. One coat of the 100% solids product is thicker than the entire water based system.

The other number that decides the install is pot life: the working window after you mix Part A and Part B, before the batch starts to gel in the bucket and turns unworkable.

Coating type	Pot life at about 77 degrees
100% solids epoxy	30 to 50 minutes
Solvent based epoxy	Longer, the solvent keeps it fluid
Water based epoxy	Longest, sold as an easy to use coating
Polyaspartic, for scale	20 to 30 minutes

The Corotech V430 sheet lists 30 minutes and the AllPro 100% solids epoxy sheet lists 40 to 50 minutes at 77 degrees. Heat shortens all of them, and every 18 degree rise roughly halves the clock. That is the honest tradeoff: 100% solids gives a thick floor in one coat but a short pot life that punishes a slow crew, while water based is forgiving but thin, best as a primer or light duty coat, not a garage floor.

What you are legally allowed to buy depends on your zip code. A VOC, or volatile organic compound, is a solvent that evaporates out of the coating as it cures, which is what air quality rules limit. The EPA national architectural coatings rule (40 CFR Part 59 Subpart D, first issued in 1998) caps VOC content by coating category across the country. Where states go further, the limits get tighter. California’s SCAQMD Rule 1113 is the strictest widely referenced standard, with comparable limits across the northeastern OTC states. That is why a high VOC solvent based epoxy legal in one state cannot be sold in another. The Corotech V430 lists just 13 grams per liter and is compliant in all regulated areas, while a solvent based epoxy can run several hundred.

Where solid color epoxy wins

Solid color is the right pick when the floor is a working surface, not a showpiece, and the concrete under it is sound.

• Workshops and utility rooms. A clean slab in a low traffic space does not need flake to hide flaws or add grip, and a 100% solids coat is the most floor for the least money here.
• Commercial and industrial floors. A high build 100% solids epoxy takes vehicular and forklift traffic that a thin coating never will. The AllPro sheet clears forklift traffic after about 7 days of cure, and the Corotech V430 is rated for USDA inspected facilities.
• As a base coat, or in a safety color. Solid color is what most flake and quartz systems are built on, and it is how you get an exact brand or ANSI safety color onto a floor. If the color is the job, this is the system.

Where solid color epoxy loses

Solid color hides nothing, and that is its real drawback. This is the section the product pages skip.

• It shows every imperfection. There is no flake to camouflage a patched crack, a grind mark, a roller lap line, or trapped dust. A flat color telegraphs every flaw in the slab and every miss in the application. On a rough or previously coated floor, flake is usually the smarter buy.
• The thin version fails in a garage. A water based or box store kit that dries to 2 or 3 mils lifts under hot tire pickup, when warm tires soften a thin coating and peel it off the slab as the car cools. A rolled on kit over an unground slab is the floor I most often get called to look at, and it almost always started as the cheapest gallon on the shelf.
• It shows wear and dirt. A single solid color, especially a darker one, shows tire scuffs, dust, and traffic patterns more than a flake floor does. Easy to clean, hard to keep clean.

Solids content is the one line on the data sheet a salesperson would rather you skip. Read it first, before the color chart and before the price. A cheap gallon that is half water is not a bargain, it is half a floor.

How to buy solid color epoxy without getting burned

Ask for the manufacturer’s technical data sheet for the exact product going on your floor, then read four lines before you sign.

• Solids content by volume. You want it high: for a garage or a shop, a 100% solids product. A lower solids water based coat is fine for a light duty utility room or a primer, not the wear surface in a garage.
• Dry film thickness per coat, and the number of coats. This is the actual floor you are buying. Two coats of a 3 mil kit is not the same as one 100% solids pour, and the sheet tells you which.
• Pot life and crew size. A 30 minute pot life on a big floor needs a fast, experienced crew of at least two; a slow team on a short clock leaves bubbles and lap marks.
• Adhesion and VOC. A serious sheet reports adhesion tested to ASTM D4541, the pull off test. The AllPro 100% solids sheet lists more than 300 psi, with the concrete failing before the coating lets go, exactly what you want. Check the VOC line too, so the product is legal for your state and space.

Whatever the sheet says, the floor still lives or dies on prep. The slab gets ground or shot blasted, not acid etched, and tested for moisture to ASTM F1869 or F2170 before anything goes down. If you are weighing this against a faster curing system, read epoxy versus polyaspartic, and for the mil numbers see epoxy floor thickness. Compare every system in the coatings hub, and if you are doing it yourself, the honest rundown is in the best garage floor epoxy kits: a good kit can work on an easy, dry slab, but rarely on a garage with hot tires. If you are hiring, the installer directory lists only crews whose licenses we have verified, and you can have a quote checked first.

Frequently asked questions

What is the downside of epoxy flooring? For solid color specifically, the downside is that it hides nothing. It shows every crack, patch, and roller mark in a way flake does not, and a thin water based version lifts under hot tires in a garage. The broader drawbacks of the material are in disadvantages of epoxy.

How much does 1000 sq ft of epoxy cost? By system, a professional epoxy floor runs $3 to $15 per square foot, so 1,000 square feet lands roughly $3,000 to $15,000 installed. Solid color sits at the bottom, $3 to $7 per square foot. Prep and slab condition move the number more than the finish does.

What solid epoxy floor colors are available? Most manufacturers offer a set of standard grays, tans, and a few reds and blues, plus custom color matching and ANSI safety colors on some product lines. Because it is one flat pigment, you can hit almost any color, a real reason to pick solid over flake when a specific brand or safety color is the point.

What is the lifespan of epoxy flooring? A properly installed 100% solids floor over a ground slab typically lasts 10 to 20 years, and a thick industrial system longer. A thin water based or box store kit is often lifting at the tire tracks in 1 to 3 years. Lifespan is set by prep and mil thickness, not by the label, and the full breakdown is in how long epoxy floors last.

How much does a 20x20 epoxy floor cost? A 20 by 20 floor is 400 square feet, so at the solid color range of $3 to $7 per square foot it runs about $1,200 to $2,800 installed. Expect more if the slab needs grinding or crack repair, which is why the cost calculator asks about your concrete. Compare the finishes in the coatings hub.

How this page is maintained

Written and reviewed by Nick Shushan, founder of EpoxyTimes, a flooring contractor with roughly 25 years in the trade, most of it in hardwood in New York, working in epoxy since 2019. Specifications come from the manufacturer technical data sheets linked above, and prices come from the site rate card. Last updated September 4, 2026.