Pearlescent pigment worked through a thick, self-leveling epoxy, for finished basements, showrooms and the occasional garage that’s more room than parking stall. It is the most hand-made floor we put down, and the least forgiving.
A marbleized epoxy floor is not a printed pattern and not a coat of paint with glitter in it. It is a layer of clear, 100%-solids epoxy, mixed with fine metallic or pearlescent pigment, poured thick enough to flow and level on its own. While it is still liquid, the crew moves the pigment around, and as it levels the pigment settles into veins, clouds and swirls that look like stone or poured metal.
That pour sits on a ground and repaired slab, over a solid-color base coat that sets the background tone, and it is usually sealed under a clear topcoat for wear and UV stability. If you came here comparing finishes, the main alternative for most spaces is an epoxy flake floor, which hides far more and forgives far more. For how all the systems compare, start with our overview of epoxy floor coating in Woodbury.
The pattern you see is fixed once the coat cures. What isn’t fixed is the light, and light is most of what people are reacting to when they see one of these floors.
Same pour, four lights
The pattern below never changes. Switch the light source and watch what the floor does.
A grid of ceiling lights puts a row of soft hot spots across the floor. The veining reads evenly from anywhere in the room, which is why showrooms and finished basements suit metallic so well. The catch: long linear fixtures reflect as straight lines, and any roller lap or thickness change shows as a kink in that reflection.
Light coming in low from one side is where a metallic floor looks deepest. Pigment flakes that settled at slightly different angles catch it unevenly, so one side of each swirl glows and the other drops into shadow. The same raking light also shows every footprint, dust patch and pet hair on the gloss.
A west-facing door at the end of the day sends a nearly flat beam across the floor. Right in the glare, the pattern washes out to a bright sheet; a few feet past it, the contrast jumps. Scratches, grit and dried salt film light up in that beam first, and it is also the UV that slowly ambers plain epoxy that has no UV-stable topcoat.
Under one lamp or a single bulb, there isn’t enough light for the pigment to reflect, so the floor reads as color rather than depth: a dark, slightly mottled surface. Nothing is wrong with the floor. If the room is mostly used at night, choose colors and lighting together, because the “3D” look depends on light reaching the floor.
A drawing made with CSS gradients to show the effect of light angle, not a photo of a real floor or a sample of any color we sell. Judge a real color on a sample board in your own room’s light.
“3D” floors fall into two camps. Some are printed images under clear resin, the ocean scenes and canyon drops. What we pour, and what most people mean by 3D flooring epoxy, is depth you can’t print: the effect comes from the pigment, the light and the thickness of the coat.
Metallic pigment is made of tiny flat particles. Where the crew pushes the resin, they lie down flat and act like little mirrors; where the resin rolls or eddies, they tilt and turn edge-on, and those areas go dark. The eye reads that light-to-dark change as a curved surface, the same way it reads shading in a drawing.
Flat particles reflect at one angle, so the floor looks different from every spot in the room and changes as you walk. Low, one-sided light makes the strongest effect, overhead light the most even one, and weak light very little.
A thick coat gives the pigment room to stack and sit at different depths, and a clear topcoat adds a layer of gloss above it. Thin it out and the floor goes flat, which is one reason the spreader’s job matters so much.
A flake floor can be laid down by a small crew at a steady pace, and a missed spot gets more chips. A metallic pour is one continuous, timed event. Once the first batch is mixed, the floor can’t stop until the last section is worked and the crew walks out the door.
That is why metallic needs more hands than flake and leaves far less room to fix things. Here is who is doing what in a lower-level room:
Who does what on pour day
Pick a role to find it on the plan and read what that person is responsible for.
Mixer
Mixing station, outside the door
Measures part A and part B, adds the metallic pigment and mixes each kit on a low-speed drill, batch after batch, so the next pail is ready the moment the last one empties. One published metallic sheet has the pigment stirred into the resin and left to wet out for at least 30 minutes before the hardener goes in, so this job starts well before the first pour.
Common mistakeMixing fast or scraping the pail walls onto the floor. Speed whips air into the resin, and material stuck to the side of the pail may be unmixed; one data sheet warns that draining a pail upside down onto the floor leaves a spot that never cures.
Pour lead
At the wet edge
Lays each batch out in a long ribbon right away, decides where the pattern starts and where the crew will finish, and keeps the wet edge moving toward the exit so nobody has to walk back across the floor.
Common mistakeLetting a mixed pail sit. Catalyzed epoxy heats up and cures faster in a bucket than spread thin on the floor, and a half-gelled batch won’t level or blend into the last one.
Spreader
Behind the pour, gauge rake or notched squeegee
Pulls the ribbon out to an even thickness with a gauge rake or notched squeegee. Thickness matters more here than on any other system: the metallic coat on one published sheet runs 32 to 40 mils, several times a typical clear coat.
Common mistakeUneven depth. Where the coat runs thin, pigment has less room to move and the base color shows; where it runs thick, pigment pools and the pattern changes character.
Spike-shoe roller
In the wet field, on spiked shoes
Walks the wet coat in spiked shoes and back-rolls it to even out squeegee lines and lap marks. One metallic system’s sheet makes spiked shoes mandatory throughout application and calls for fresh roller covers as material starts to set on them.
Common mistakeRolling too late. Once the coat starts to gel, every pass leaves a drag mark that will not level out, and on a smooth metallic surface it shows for the life of the floor.
Effects / finisher
Working the pattern behind the roller
Moves the pigment to create the veining, swirls or soft clouds you chose from the sample: brushes, rollers, a light solvent mist, working in the window before the coat sets. This is the hand you are really paying for.
Common mistakeChasing a photo. Overworking an area to copy an online picture muddies the pigment, and going back into a section that has started to set leaves marks that won’t heal.
Clock-keeper
At the doorway with a thermometer
Watches the working time, the air and slab temperature and the dew point, and tells the crew when to stop touching a section. One metallic sheet gives an open time of roughly 45 minutes to an hour at 65°F, and that window shrinks as the room warms. Also tracks how far each kit should go, often with tape marks on the wall.
Common mistakeNot watching the slab. A slab warming through the day can push air out of the concrete and pinhole the coat (one epoxy data sheet warns against applying while temperatures are rising), and a slab within 5°F of the dew point can sweat under fresh resin.
A simplified plan, not a site layout. Small rooms combine roles; a big showroom adds hands. Times and thicknesses quoted are from published manufacturer data sheets, not a promise for your floor.
Sometimes. The trouble is that most garages here are where wet, salty cars park from November through March, and a metallic garage floor is the system that handles that worst. For a garage that works hard, a garage floor epoxy system with flake or a solid color is usually the better buy, and we will say so even though it is the smaller job for us.
The considerations here are the ones we walk through with anyone set on metallic for a garage.
Before you pick metallic for a garage
A metallic pour is meant to be glass-smooth, and a glass-smooth floor with a film of melted slush on it is slippery. The Twin Cities average 51.2 inches of snow a year (MSP, 1991-2020 normals), and every inch that rides in on a car ends up as water on the floor. Grip comes from texture: an aluminum-oxide additive in the topcoat, or a finish coat used as the carrier for a slip-resistant agent, which is how one metallic system’s sheet describes it. Texture works, but it dulls the mirror finish and holds dirt, so the look changes wherever it goes.
Verdict If cars come in wet, plan texture at least for the door half and walk paths, and accept that those areas will look less like the photos.
A broadcast flake floor is busy on purpose: thousands of chips camouflage sand, small scratches and dust. A metallic floor is one continuous reflective surface, so a scratch from a dragged snowblower or road grit ground in by a tire catches the light the same way the pattern does. A sacrificial or harder topcoat helps; it doesn’t make the floor flake-forgiving.
Verdict Good for a garage you sweep and keep mats in. Hard to live with on a daily-driver floor with kids’ bikes and a snowblower.
Warm tires parked on a fresh floor can soften and mark some coatings, and one metallic system’s sheet warns that “chemicals used in tire manufacturing may be detrimental to all sealers from vehicular parking.” Then there is salt: brine that dries on a glossy, dark metallic floor leaves white tide lines that a flake floor mostly hides.
Verdict Fine if you’re willing to squeegee and rinse through the winter. Lighter, pearl-toned colors hide salt film better than deep charcoals and blues.
A self-leveling coat follows the slab under it. Patched pits, ground-down high spots and especially control joints can read through; one manufacturer’s sheet says construction joints “may have sufficient movement to ‘telegraph’ through” its metallic epoxy. Older garages with salt-scaled aprons need more filling and grinding before a metallic pour than before flake, and some lines will still show.
Verdict A sound, newer slab is a fair candidate. A pitted 25-year-old garage floor usually looks better, for less, under flake.
Metallic takes more material per square foot (one published sheet lists the metallic coat at 32 to 40 mils), more people on pour day, and a sample made ahead of time. Nothing hides a lap line or a drag mark, so a section can’t be fixed later by broadcasting more chips over it. Expect it to price higher than a flake floor of the same size; if a bid doesn’t, ask what was left out.
Verdict You pay more for the look. If the look isn’t the main reason, flake is the better value in a garage.
Heated garages where cars rarely come in wet, display garages for a collector car or a motorcycle, a shop space that doubles as a hangout, and garages used more like a room than a parking stall. These floors see less slush and grit, get cleaned more often, and are lit and looked at, which is when metallic pays off.
Verdict If your garage fits one of these, metallic is a reasonable choice, not an indulgence. Tell us how the space is used and we’ll say which way we’d go.
General guidance from how these floors behave, not an assessment of your garage. Someone has to see the slab and how the space is used before recommending a system.
Lower levels and showrooms are where metallic floors earn their keep: dry, heated, lit, and walked on rather than driven on. They come with their own checks.
A metallic coat is a sealed, non-breathing film, and one metallic sheet calls testing before application “appropriate” for exactly that reason. Basement slabs sit on the ground, so we test against the product’s own limit: vapor emission by ASTM F1869 or in-slab humidity by ASTM F2170. A high reading means a moisture-tolerant primer or a different floor, not a pour and a hope.
The Minnesota Department of Health says more than two in five Minnesota homes have radon at levels that pose a significant health risk, and it treats sealing only as one part of a fan-and-pipe system. A coating doesn’t lower radon, and we won’t say it does. Test the house; if a mitigation system is needed, put it in before the floor.
Minnesota has required radon-resistant construction in new homes since 2009, and Woodbury has added roughly 8,700 housing units since 2010 by Census estimates. Many of those lower levels have a sealed sump lid or a vent pipe through the slab. We finish the pour to a clean edge around them so the seals can be inspected and redone without cutting into the floor.
A walkout lower level has a door at grade and often a wall of glass, which means sun on the floor. That is great for depth (see the window setting above) and hard on plain epoxy, which can discolor under UV. Plan a UV-stable clear topcoat there, and expect the slab near the door to need the closest moisture check.
Commercial rooms want the look plus a slip-resistance target and a schedule. One metallic sheet points to a 0.6 coefficient-of-friction directive for accessible walkways and says the installer is responsible for meeting it. Heavy rolling loads and wet, oily rooms belong under industrial epoxy floors instead.
If the slab is old, patched and cracked, or you’d rather the floor not show every footprint, a solid color or ground and sealed concrete may suit the room better. Metallic is a statement floor; some rooms just need a good floor.
It depends on the product and the room temperature. Published examples: one metallic epoxy system lists light traffic after 16 hours and full cure after 5 to 7 days at 77°F, stretching to 30 hours and 14 days at 50°F. If a clear topcoat goes on top, add that product’s own times. Furniture and rugs wait for full cure.
Not exactly, and nobody honest will promise it. Every pour moves differently, and most online photos are shot under bright, low-angle light that flatters the pattern. Ask for a sample board in your colors, and look at it in the actual room at the time of day you use it.
Plain epoxy can. One metallic-capable epoxy’s data sheet notes that “surface discoloration of product may occur when exposed to UV rays,” and another epoxy maker recommends a topcoat “for added UV stability.” Near a patio door or under an open garage door, a UV-stable aliphatic topcoat such as a polyaspartic topcoat is the usual answer.
Sometimes. Some metallic-capable epoxies are made to go over an existing, well-bonded epoxy after it is sanded or ground and cleaned. If the old coating is peeling, lifting at the door or was put down over sealer, it has to come off first, because the new pour is only as good as what it sits on.
Usually, yes. A heated lower level stays inside the range most epoxy sheets allow (one metallic-capable product is limited to 50°F to 86°F, with the material conditioned to at least 65°F), which an unheated garage can’t do in the Twin Cities, where the MSP normal high for each month from November to March sits between 23.6°F and 41.9°F.
Dust mop or microfiber often, because grit is what scratches it. Damp mop with water or a mild cleaner the topcoat maker approves, and skip abrasive pads and harsh solvents. Felt pads under furniture and a mat at every entry door do more for the finish than any product.
Tell us the room, roughly how big it is, how old the slab is and how the space gets used. Photos of the floor and the lighting help more than anything. We’ll come look at the concrete, test it if it’s a lower level, and tell you plainly whether metallic is the right floor for that room before we talk about a price.
Prefer the phone? (651) 661-4781. Service area: Woodbury and nearby Washington County and east-metro communities.