Quartz Broadcast Epoxy Systems: What They Are, Cost & Best Applications

There’s one type of floor system that commercial kitchens, hospital corridors, locker rooms, and pool decks all have in common. It’s not tile. It’s not polished concrete. It’s quartz broadcast epoxy — and most homeowners have never heard of it.

That’s changing. As residential property owners discover how long quartz floors actually last, demand for the system outside commercial spaces is growing fast.

What a Quartz Broadcast System Actually Is

A quartz broadcast epoxy system uses colored silica quartz aggregate as the primary wearing surface. The basic construction:

1. Base coat: An epoxy primer or basecoat is applied to the prepared concrete — typically at 10–20 mils wet film thickness
2. Quartz broadcast: Colored quartz aggregate (angular sand particles, 0.5–1.5mm grain size) is broadcast into the wet epoxy at 100% coverage — meaning every square inch of the surface is covered in quartz
3. Grout coat: After the base coat cures, excess quartz is swept away and a clear epoxy “grout coat” is applied to fill the voids between the quartz particles
4. Topcoat: A clear polyurethane, polyaspartic, or urethane sealer is applied as the final wearing surface

The result is a uniformly textured, highly durable surface where the quartz aggregate carries the mechanical wear — not the epoxy binder. This is fundamentally different from a decorative flake system, where the chips float in the topcoat rather than forming the primary wearing layer.

According to the Concrete Coating Association, quartz broadcast systems achieve a surface hardness (Shore D) of 85–95 — higher than standard epoxy topcoats (75–80) and significantly higher than decorative flake systems. That hardness is what makes them the default for commercial kitchens, pharmaceutical labs, and heavy-traffic commercial floors.

Quartz vs. Decorative Flake: The Key Differences

The short version: quartz is tougher and safer in wet conditions. Flake looks more dramatic in dry garages and showrooms. Most residential garages don’t need quartz — but some do, and most commercial and wet-area applications do.

Where Quartz Systems Are Specified (And Why)

Commercial kitchens: OSHA and local health codes effectively require slip-resistant flooring in commercial kitchen environments. Quartz broadcast provides the wet DCOF values that health inspectors look for. The chemical resistance handles daily contact with grease, citrus, sanitizers, and bleach.

Pool decks and aquatic areas: Constant wet conditions, bare feet, and chlorinated water make quartz the standard pool-deck system. Decorative flake systems would meet DCOF minimums in wet conditions only if anti-slip additives were specified — quartz achieves it intrinsically.

Locker rooms and restrooms: Same logic as pool decks. Daily wet conditions, bare feet, cleaning with harsh products. Quartz handles all of it without requiring additive specification or additive maintenance.

Food processing and pharmaceutical: Beyond slip resistance, these industries need chemical resistance to specific solvents, sanitizers, and cleaning agents. Quartz systems with chemically resistant topcoats (PTFE, polyurethane) are standard.

Residential laundry rooms and mudrooms: Smaller spaces where the wet-area logic applies. A quartz floor in a laundry room that gets splashed daily will outlast a standard residential epoxy system by years.

Residential garages with drainage concerns: If you’ve got a garage that gets genuinely wet — you wash vehicles inside, water tracks in regularly, you live in a high-rainfall climate — quartz is worth considering. See our drainage detail article on epoxy flooring and floor drains for context.

Colors and Aesthetics

Quartz aggregate comes in dozens of factory-colored options: neutrals (tans, grays, buffs), earth tones (terra cotta, sage, slate), and brighter accent colors. The finished surface looks like uniformly textured terrazzo — not a painted floor, not a flake floor.

Because quartz is an aggregate rather than a chip, you don’t get the same “granite-like” visual depth that decorative flake provides. The look is more uniform, more industrial, more utilitarian. In a commercial kitchen or locker room, that’s appropriate. In a showroom garage, some owners want more visual drama — which is why they often choose decorative flake instead.

Multi-color quartz blends (mixing 2–3 aggregate colors) can produce more interesting finishes that bridge the gap between pure utility and aesthetics.

The Double-Broadcast Option

For maximum durability in heavy-use commercial environments, a double-broadcast quartz system applies two layers of quartz aggregate — one in the base coat and one in the grout coat. This creates a denser, more abrasion-resistant surface with a slightly different texture profile.

Double-broadcast systems add approximately $0.50–$1.50/sq ft to the cost but can extend service life significantly in chemical processing environments or food manufacturing floors that get daily power-washing.

Cost Breakdown

Quartz systems cost 20–40% more than equivalent decorative flake systems at the residential level. The premium narrows at commercial scale because contractors buying quartz in volume get better material pricing.

What the Installation Process Looks Like

The quartz installation takes longer than a standard flake system — typically 2 days minimum, sometimes 3 for larger commercial projects.

Day 1: Concrete prep (diamond grinding, crack repair), primer coat, quartz broadcast, allow to cure overnight Day 2: Sweep excess quartz, inspect coverage, apply grout coat, allow to cure Day 3 (if required): Apply topcoat, final inspection

This is why quartz contractors charge more. It’s more labor-intensive, more material-intensive, and requires better surface prep than a standard system because any prep failure under a quartz installation is expensive to remediate.