A coating is a system, not a bucket of paint

A professionally specified garage floor is built in layers, each doing a different job:

Layer	What it does
Primer / base coat	Penetrates the prepared concrete and establishes the bond the rest of the system depends on.
Body coat with broadcast media	Builds thickness and carries the colour. Vinyl flake is broadcast into the wet resin.
Topcoat / clear sealer	Encapsulates the flake, carries any traction additive, and takes the abrasion, chemical exposure and sunlight.

Manufacturer submittal data for multi-layer broadcast systems specifies substantially greater film thickness than thin-film products ^[1]. Final installed thickness depends on the system quoted and the applicator's spread rate, so "thicker" is a property of the specification, not a guarantee.

"Epoxy" has become a shape, not a chemistry

Most homeowners asking for an epoxy floor are describing an appearance — a seamless, glossy floor with colour flake — rather than specifying a polymer. That look can be produced with epoxy, with polyaspartic, or with a hybrid.

This matters because the chemistry, not the appearance, determines:

the minimum temperature at which it will cure
how long before you can walk on it and park on it
how the clear coat behaves in sunlight
how it handles chemical exposure

Ask any provider to state the chemistry of each layer separately. "Epoxy floor" is not a specification. See epoxy vs polyaspartic for the comparison.

Flake broadcast: partial versus full

Partial broadcast scatters flake sparsely over a coloured base. It uses less material and leaves more of the base coat exposed to wear, and it hides less of the concrete underneath.

Full broadcast (sometimes "broadcast to rejection") applies flake until the surface is covered and no wet resin shows. Once cured, loose flake is scraped and vacuumed off. This builds more thickness, adds texture, and conceals minor surface irregularities better.

For a floor with existing cosmetic damage, full broadcast generally hides more. Neither option repairs the concrete underneath — that happens before any resin goes down.

Slip resistance is a decision, not a default

A smooth, sealed resin floor is non-porous. Wet — from melting snow, which in this climate means most of the winter — it can be slippery.

Traction is added by suspending media such as aluminium oxide, polymer grit or glass beads in the final clear coat. There is a genuine trade-off: more aggressive texture gives more grip and is harder to mop clean. Raise this explicitly when you get an estimate, because it is easier to specify up front than to change later.

When a floor is a poor candidate

A coating is a surface treatment. It does not stabilise ground, reinforce a slab, or stop a structural problem.

Situations that need resolution first, or may rule out coating entirely:

Active structural cracking, where the slab is still moving. A coating will crack with it.
Persistent moisture coming up through the slab. Trapped vapour is a documented cause of delamination and is why moisture is measured beforehand.
New concrete that has not finished curing.
Heavy oil saturation that has soaked deep into the slab, acting as a bond breaker.

None of these are automatically fatal, and none can be assessed from a photograph. They are the reason an on-site look precedes a real number.

Maintenance

Non-porous floors keep grit on the surface instead of in the concrete, so routine care is mostly removing abrasives — sweeping or dust-mopping — before they get ground in under tires. For wet cleaning, coating manufacturers generally direct users to neutral-pH cleaners and away from harsh acids and abrasive pads, which dull the finish.

Coated floors need less maintenance than bare concrete. They are not maintenance-free, and nobody should tell you they are.

What comes next

Concrete preparation and repair — the part that decides longevity
Installation process — what the work looks like
Cost factors — what drives the number

Garage floor coatings: how the systems actually work