Shelby Township Epoxy Flooring
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Basement Floor Epoxy · Shelby Township

Basement Floor Epoxy in Ann Arbor, MI

A coating sized to the actual vapor reading off the slab, not guessed from a phone photo.

❦1-2 days installs · typical timeline
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Warm grey flake epoxy floor in a finished basement.
Calcium chloride moisture disc taped to bare basement slab.
Roller pulling grey epoxy base across a basement slab.
What we install

Why most basement coatings fail in the first humid summer

The basements under Old West Side and Water Hill homes have been pushing moisture vapor up through their slabs for over a century. A cheap film of paint over that slab buys one summer at best. The slab itself is usually sound. What someone put on top of it is what failed. Painting it again, or laying peel and stick vinyl on top, repeats the same mistake with a new label on the bucket.

A real install opens with a calcium chloride disc taped to the slab for two or three days. The disc gives a number: pounds of water vapor per thousand square feet per day. That number picks the primer. Light vapor: a standard primer that tolerates moisture. Heavy vapor, common in foundations a century old near the Huron River: a vapor mitigating epoxy that locks the moisture down. Over the primer lands a solids epoxy base. Most basements get a light pigment to brighten the room. Then either a fine flake for depth, or a smooth polyaspartic if the room reads more like a finished living space.

  • Primer is sized to the actual vapor off the slab, not picked from a catalog.
  • A light or warm base reflects ambient light back into the room.
  • Polyaspartic topcoat does not slip under furniture, exercise gear, or pet paws.
  • Walk on it that evening. Furniture goes back inside a day.
  • Crews bring exhaust fans and dehumidifiers, so the cure smell clears before they leave.
The slab and the coating have to match. Read the slab wrong and the best coating still fails.

Most basement work across the Ann Arbor footprint wraps inside one working day. That covers Burns Park bungalows, Kerrytown duplexes, and the newer infill in Ann Arbor Hills. A second day enters the picture only when the slab needs serious crack repair before primer. Reading the slab in person is the only honest way to quote a basement. We bring the moisture disc number to that visit.

A basement can show efflorescence, the chalky white salt residue. It can show water staining at the wall, or a previous coating that already lifted. Each one is the slab talking. A local installer will come read it in person for free and explain what is going on below the floor.

Materials

A basement system is not a garage system in lighter pigment

Concrete in a basement and concrete in a garage live different lives. A basement slab sits below grade with wet soil pressing on the underside in every season. That slab is always trying to release vapor up through itself. A coating laid on top without primer is fighting that vapor in the wrong direction. The water pushes from below. The film cannot bond into the slab. Within months the coating either lifts in sheets or traps humidity against the concrete. That is how a basement starts to smell like a damp shower curtain after a fresh paint job. A thicker coating does not fix that. The chemistry has to match the slab.

The install opens with the moisture reading. A calcium chloride disc gets taped to the slab and left for sixty to seventy two hours. The disc is then weighed to see how much moisture it absorbed. That weight becomes a pounds per thousand square feet figure. The figure picks the primer. Below the threshold, a primer that tolerates moisture works. Above it, a vapor mitigating epoxy is the right call. Whichever primer goes down, the base coat is a solids epoxy in a bright neutral. Basements need light bouncing back up at the eye. The topcoat is then either a partial flake broadcast for texture, or a smooth polyaspartic if the room reads as living space.

  • The moisture disc number picks the primer, not the installer's gut.
  • Bright neutral base coat brightens the room instead of darkening it.
  • Partial flake adds grip without the dense garage pattern.
  • Polyaspartic topcoat seals humidity out and stays clear under a window well.
Macro of vapor-mitigating primer curing on basement concrete.
Coved corner where flake floor meets painted basement wall.
What about the alternatives?

Other basement floor approaches and how they hold up here

Most basement floor finishes look fine in the showroom and start failing inside one humid year underground. The list below describes what each option actually does once the slab moisture pushes up through whatever was put on top.

Concrete paint or stain

The cheapest cosmetic pass. Lifts at walls and floor drains inside one wet season.

Skip

Peel and stick LVP or vinyl tile

Looks like real flooring at the start. The glue lets go under vapor pressure. Seams curl after one humid August.

Skip

Modular carpet tile

Warm underfoot. Holds moisture and grows mildew unless the slab below is already sealed and dry. Works only over a coating that already handles the vapor.

Acceptable

Engineered hardwood on sleepers

Reads as premium. Adds height. Hides the moisture story instead of fixing it. Fails dramatically once water finds the wood.

Skip

Vapor mitigating epoxy plus polyaspartic

The system above. Sized to the slab's actual vapor. Brightens the room and takes the moisture instead of fighting it.

Recommended
How it goes

From quote to walk-on, fast.

STEP 01

Free Quote

Submit a few photos or book a free 15-minute on-site visit. The result: a fixed written quote, not an estimate range.

STEP 02

Floor Prep

Diamond-grind the slab, patch every crack, vacuum-fill control joints, and prime against moisture vapor.

STEP 03

Coating

100% solids epoxy base, a full flake broadcast for grip and depth, then a polyaspartic topcoat.

STEP 04

Cure & Enjoy

Walk on it the same evening. Park on it 24 hours later.

Before you book

Questions to ask before signing a basement quote

A basement fails for different reasons than a garage. So the questions worth asking are different. A reputable local installer answers each of these during the visit.

It should. The calcium chloride number, the RH probe reading, or ideally both. The matching primer is named in the quote. A quote that just promises a primer that tolerates moisture, with no number behind it, is a guess dressed up as a spec. Heavy vapor needs a chemistry that light vapor does not. The gap shows up two years after install.
The strongest smell comes off the base coat in the first four to six hours. Then it fades through the rest of the day. A real install runs an exhaust fan and a portable dehumidifier through cure, vented out a basement window. The rest of the house stays clear. By the next morning the basement smells like nothing. A crew without exhaust gear leaves the house smelling like a wet paint roller for a week.
Standing water is a drainage or sump problem, not a coating problem. A reputable installer diagnoses that first and points at the source. Sometimes that is a different contractor. An old failed coating gets ground fully off the slab. A fresh vapor reading is taken. The new system is sized to the current number. Putting a fresh film over an old failure repeats the failure on schedule.
Diamond grinding creates fine concrete dust. A proper install runs the grinder with a vacuum shroud right at the head, vents into a HEPA extractor, and seals the basement door from the rest of the house with plastic sheeting and tape during the dusty steps. Without that containment, the dust rides the HVAC return and settles across every surface upstairs.
Foot traffic by the same evening. Light furniture the next morning. Heavier pieces and area rugs at roughly 48 to 72 hours. Full chemical resistance (where a spill sits on the surface and does not react with the film) lands at about day seven. A Friday install usually means the basement is fully reloaded by Sunday night.
Aftercare

Keeping a finished basement bright across the years

A basement floor sealed under polyaspartic asks for less than the raw slab it covered. The topcoat resists staining. Spilled wine, pet accidents, and laundry detergent wipe off instead of soaking into the concrete. Two slow watch items matter over the years. The first is fine grit dragged in from outside on shoes. Basement grit is finer than garage grit and acts like sandpaper underfoot. The second is any new water finding the slab from a failing sump, a leaking hose bib, or a cracked foundation wall. The coating handles humidity by design. It does not, and cannot, handle an active leak.

  • Sweep or vacuum once a week. Fine grit acts like sandpaper if it sits.
  • Damp mop once a month with a pH neutral product. Skip ammonia at strength and concentrated bleach.
  • If a sump pump or dehumidifier was off for a season, run it a full week before inspecting the floor for new staining.
  • Walk the perimeter once a year at the season change. Look for fresh efflorescence near water lines, gas lines, and electrical penetrations. Slow seeps show there first.
  • Chair legs or weight bench feet that scrape through can be patched by the installer while the flake batch is still in stock at the supplier.
Finished empty basement with warm grey flake epoxy floor.
How a finished basement floor reads in the morning
FAQ

What Ann Arbor owners ask about basement coatings

We build our floors in layered coats, and that careful stack of primer, base, and top coat is the whole reason they hold up here. A primer grips the bare slab. A thick base coat carries the color flake and gives the floor its body. Then a polyaspartic top coat seals the whole thing and takes the daily wear for you. Built that way, a floor in this area holds up for years before it ever needs a fresh top coat. The soft box store kits skip the moisture primer to save a few dollars, so most of them peel inside two or three winters.
Epoxy and polyaspartic do two different jobs inside the same floor. Epoxy is the base layer that grips the slab and builds the thickness you can see. Polyaspartic is the clear top coat above it, and that coat is what gives the floor its hardness, its shine in daylight, and the fast cure that lets us pour on one day and hand you the floor the next. A floor with only epoxy on it stays softer and slowly yellows in the sun. We always pour both so each layer can do the part it is good at.
Three things set the price. The first is the size of the floor. The second is the shape of the slab sitting under it, and the third is the finish you pick. A slab carrying deep cracks, old oil stains, or heavy damp needs far more prep work, so the number runs higher. Metallic pours and dense flake blends sit at the top end of the range. We never quote a loose range over the phone, because that number is almost always wrong. Instead we come look, read the slab in person, and write one clear price after a free walk through.
Yes. The work is all indoors, so as long as the garage holds its heat through the cure, the time of year does not stop us at all. On the coldest days we simply run a heater for a few hours while the top coat sets up. Spring and fall fill up fast around here. Because of that, winter often gives you the shorter wait if you want a fresh floor down before the next salt season hits.
Hot tire pickup is the exact thing that kills cheap coatings. A fully cured polyaspartic top coat is harder than the rubber of a tire, so it holds tight to the base layer even after a long July drive home on the highway. The soft paint kits lift off in patches the moment a hot tire parks on them. That is the failure we build every floor against, coat by coat, right from the prep.
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