Commercial quarry tile installation puts dense, unglazed clay tile over a concrete slab, sloped to the floor drains and set in high-performance mortar, with 100 percent solids epoxy grout and movement joints. It is the standard floor for restaurant kitchens because it handles hot grease, heavy carts and daily wash-downs. Most commercial kitchen jobs follow a TCNA Handbook method for heavy service, and health inspectors expect a smooth, cleanable floor with a coved base at the walls.
Walk into almost any restaurant kitchen, school cafeteria or food plant and you will see the same thing underfoot: red, brown or gray square tiles with wide grout lines. That floor takes more punishment than any other tile in a building. Fryer oil, boiling water, dropped sheet pans, rolling racks, degreasers and a hose at closing time all hit it every day.
This guide explains what quarry tile is, why it suits commercial kitchens, the eight steps of a proper commercial quarry tile installation, the standards behind each one, costs, scheduling and maintenance. Alvin wrote it for FIXO, which handles commercial tile work for restaurants, offices and other businesses throughout the DC region.
What this quarry tile guide covers
- What quarry tile is
- Why kitchens use quarry tile flooring
- Quarry tile compared with other kitchen floors
- Other places quarry tile works
- Standards and health code rules
- 8 steps of a commercial quarry tile installation
- Why epoxy grout matters
- Scheduling around a working business
- What it costs
- Common failures and how to avoid them
- Cleaning and maintenance
- FAQs
- Planning your floor
Key takeaways
- Quarry tile is an unglazed, extruded clay tile, usually 1/2 inch thick, with low water absorption and natural slip resistance.
- The TCNA Handbook rates commercial kitchens as heavy service, with concrete as the approved substrate.
- Industry guidance calls for 100 percent solids epoxy grout meeting ANSI A118.3, because cement grout breaks down under kitchen chemicals.
- Movement joints belong every 8 to 12 feet in wet kitchen areas, at the perimeter and around penetrations.
- Health departments look for a smooth, nonabsorbent floor and a coved base where the floor meets the wall.
What Quarry Tile Is
Quarry tile has nothing to do with stone quarries. It is a ceramic tile made by extruding natural clay and shale, cutting it to size and firing it at high temperature. ANSI A137.1, the American national standard for ceramic tile, recognizes quarry tile as its own category.
Metropolitan Ceramics, one of the main US makers, lists these typical traits in its commercial kitchen guide:
- Sizes: 6 by 6 inches is the most popular, with 4 by 8, 6 by 9, 8 by 8 and 4 by 12 also common.
- Thickness: 1/2 inch standard, with 3/8 and 3/4 inch made for special uses.
- Absorption: the test limit is 5 percent under ASTM C373, and better products test lower.
- Surface: unglazed, so the color runs through the body and wear does not expose a different layer.
- Slip-resistant options: abrasive grit surfaces and raised tread patterns for the wettest zones.
Why Kitchens Use Quarry Tile Flooring
Quarry tile flooring has stayed the default in commercial kitchens for decades for practical reasons.
- Heat: it tolerates hot oil and boiling water spills that would soften vinyl or scorch coatings.
- Load: 1/2 inch thick tile on a solid bed carries rolling racks, ice machines and walk-in cooler traffic.
- Grip: the unglazed face, and the abrasive versions, give better traction on wet, greasy floors than most glazed tile.
- Cleaning: the surface stands up to scrubbing, hot water and the hose-down routine many kitchens use.
- Repairability: a cracked tile can be cut out and replaced without replacing the whole floor.
Porcelain, epoxy and urethane cement systems compete in the same space, but quarry tile flooring remains the benchmark many architects and health inspectors measure against.
Quarry Tile Compared With Other Kitchen Floors
Owners and designers usually weigh quarry tile flooring against three other systems.
| System | Strengths | Trade-offs |
|---|---|---|
| Quarry tile with epoxy grout | Heat and load tolerant, repairable tile by tile, long track record | Grout joints need the right grout and cleaning |
| Porcelain tile | Very dense, wide color range | Glazed or polished faces can be slick when greasy |
| Urethane cement or epoxy coating | Jointless surface, integral cove base possible | Repairs are patchy, some systems dislike thermal shock |
| Sealed concrete | Lowest cost | Sealer wears, cracks and joints must be kept filled |
Jointless resin floors suit some food plants, while quarry tile tends to win where hot oil, heavy equipment and the ability to swap a single damaged tile matter most.
Other Places Quarry Tile Works
Kitchens are the classic use, but the same qualities make quarry tile a good fit for other hard-working commercial spaces:
- Restrooms and locker rooms, where floors are mopped wet every day and slope to a drain.
- Dish rooms and bar backs, which see constant water and glass breakage.
- Breweries and food production rooms, often paired with abrasive tile and trench drains.
- Entries and vestibules, where wet shoes and grit arrive first.
- Loading and receiving areas inside a building, where carts and hand trucks roll all day.
In each case the same rules apply: a sound concrete base, the right mortar, epoxy grout and soft joints where the floor needs to move.
Standards and Health Code Rules
A proper commercial quarry tile installation follows a short list of industry documents.
| Topic | Reference | What it sets |
|---|---|---|
| Tile product | ANSI A137.1 | Defines quarry tile and its properties |
| Slip resistance | ANSI A326.3 | Wet DCOF test; 0.42 is the common benchmark for level interior floors walked on when wet |
| Installation methods | TCNA Handbook F113, F111, F112 | Direct bond to concrete, or bonded and unbonded mortar beds |
| Setting mortar | ANSI A118.4, epoxy preferred | Minimum mortar performance |
| Grout | ANSI A118.3 | Chemical-resistant epoxy grout |
| Movement joints | TCNA EJ171 | Spacing and design of soft joints |
Health codes add their own layer. The FDA Food Code, which most state and local health departments build their rules on, calls for floors in food areas to be smooth, durable and easily cleanable, and nonabsorbent where they get wet. Plan reviewers also check the floor-to-wall joint. Maricopa County’s plan review guide, for example, asks for a smooth coved base with at least a 3/8 inch radius and lists quarry tile cove base as an approved material. Your local health department will have its own checklist, so ask for it before the floor is designed.
8 Steps of a Commercial Quarry Tile Installation
The steps below follow the guidance Stone World published on tiling and grouting commercial kitchens, along with manufacturer instructions.
1. Plan Drains, Slope and Floor Height
Kitchens get wet, so the finished floor has to carry water to the drains. The slab is often recessed so the tile, bed and slope end flush with adjoining rooms instead of creating a step at the door. Floor sinks, trench drains and equipment locations should be fixed before anyone mixes mortar.
2. Prepare the Concrete
The TCNA Handbook treats concrete as the only approved substrate for heavy-service kitchens. The slab is cleaned, old adhesive and coatings removed and cracks assessed. For direct-bond work the surface needs to be flat within about 1/4 inch in 10 feet, with no more than 1/16 inch in 12 inches. Our article on subfloor leveling before flooring covers how installers check and correct flatness.
3. Waterproof the Substrate
A waterproofing membrane protects the slab and rooms below from wash-down water. The Stone World guidance recommends carrying it at least 4 to 6 inches up the walls, so water cannot sneak behind the cove base.
4. Build the Bed
Installers choose between direct bond (TCNA F113) on a sloped slab, or a mortar bed (F111 or F112) that lets them set the slope, flatness and height by hand. Mortar beds are thicker and slower but give more control on older slabs.
5. Set the Tile
Tile is set in mortar meeting at least ANSI A118.4, and many specifiers prefer 100 percent solids epoxy mortar in kitchens because of the chemicals involved. Full mortar contact matters: a hollow tile under a rolling rack cracks quickly. Grout joints are typically 1/4 to 3/8 inch wide.
6. Install the Cove Base
Matching quarry tile cove pieces, including inside and outside corners, form the curved transition from floor to wall. This joint is one of the first things a health inspector looks at.
7. Grout With Epoxy
The joints are filled with industrial-grade epoxy grout and cleaned off before it hardens. Epoxy is less forgiving to work with than cement grout, so this step rewards an experienced crew.
8. Seal Movement Joints and Cure
Soft joints filled with high-performance sealant go in every 8 to 12 feet in each direction in wet areas, at the perimeter and around columns, drains and equipment bases. Then the floor cures for the time the setting and grout makers require before carts and cleaning chemicals return.
Why Epoxy Grout Matters
If one decision makes or breaks a commercial quarry tile installation, it is the grout. Cement grout is porous. Grease, food acids, sugar and harsh degreasers soak in and break it down, and the joints wash out until tiles start to rock and crack.
That is why the commercial kitchen guidance calls for a 100 percent solids, industrial-grade epoxy grout meeting ANSI A118.3. Epoxy grout is dense, stain-resistant and chemically tough, and it keeps the joints flush and cleanable. It costs more and takes more skill to install, but it is far cheaper than regrouting a kitchen that has to close to do it.
Scheduling Around a Working Business
Most owners cannot shut a kitchen for weeks. A realistic plan for a commercial quarry tile installation usually includes:
- Phasing: working one zone at a time, such as dish area first, then the cook line, so part of the kitchen keeps running.
- Off-hours work: nights and weekends for demolition and setting, with temporary floor protection during service.
- Equipment moves: coordinating with plumbers, refrigeration techs and gas fitters to disconnect and reset equipment.
- Cure windows: building in the cure time the mortar and grout makers list before reopening to traffic and chemicals.
- Inspection timing: leaving room for a health department walkthrough before reopening if the work is part of a renovation.
Our post on hiring commercial flooring contractors covers phasing and contracts in more depth.
What Commercial Quarry Tile Installation Costs
Commercial tile is priced by the square foot like residential work, but the inputs are heavier. FIXO’s tile flooring installation cost guide puts retail and restaurant tile floors at about $15 to $30 per square foot installed, with epoxy grout, movement joints and after-hours scheduling built in.
What pushes a commercial quarry tile installation toward the top of that range:
- Tearing out an old tile floor and mortar bed.
- Building new slope to drains or recessing the slab.
- Waterproofing membranes carried up the walls.
- Abrasive or tread-pattern tile in wet zones.
- Night and weekend labor, and phasing around service.
- Moving and reconnecting kitchen equipment.
A small cafe prep area and a full hotel kitchen are very different jobs, so get a site visit and a written, itemized quote.
Common Failures and How to Avoid Them
| Problem | Usual cause | Prevention |
|---|---|---|
| Grout washing out | Cement grout in a chemical environment | Use epoxy grout meeting ANSI A118.3 |
| Cracked or loose tiles | Poor mortar coverage, no movement joints | Full bedding and EJ171 joint layout |
| Standing water | Too little slope or drains placed late | Plan slope and drains first |
| Leaks to the floor below | No membrane, or membrane stopped at the floor | Waterproof the slab and turn up the walls |
| Slippery floor | Grease film, wrong tile for wet zones | Abrasive tile and a proper cleaning routine |
The same failures show up in residential tile at a smaller scale. Our guide to tile installation mistakes explains why tile cracks and how good prep prevents it.
Cleaning and Maintenance
Quarry tile flooring is easy to keep clean if the routine suits it.
- Use neutral cleaners where possible. Some no-rinse degreasers leave a fatty acid film that builds up and can damage tile and grout over time, so rinse it off or switch products.
- Sweep and squeegee spills toward the drains during service.
- Scrub with a deck brush or auto-scrubber, rather than relying on a mop that spreads grease.
- Consider a penetrating sealer in high-spill areas, as some makers recommend, to resist staining.
- Inspect sealant joints and replace damaged sections before water gets under the tile.
When an older floor is worn but sound, deep cleaning and regrouting can buy years. Our article on commercial flooring restoration explains when to restore and when to replace.
Commercial Quarry Tile Installation FAQs
What is quarry tile?
Quarry tile is an unglazed ceramic tile extruded from natural clay and shale and fired at high temperature. It is usually 1/2 inch thick, absorbs little water and is classified separately under ANSI A137.1.
What grout is best for quarry tile in a commercial kitchen?
A 100 percent solids, industrial-grade epoxy grout meeting ANSI A118.3. Cement grout breaks down under grease, acids and kitchen cleaning chemicals.
Is quarry tile slippery?
The unglazed surface gives good traction, and abrasive versions test well above the 0.42 wet DCOF benchmark. Grease film is the main cause of slips, so cleaning routine matters as much as the tile.
How much does commercial quarry tile installation cost?
Restaurant and retail tile floors typically run about $15 to $30 per square foot installed. Demolition, new slope, waterproofing and after-hours work push the price up.
Does quarry tile need a cove base?
In food service areas, usually yes. Health departments generally require a smooth, coved floor-to-wall joint so dirt cannot collect in a square corner, and quarry tile cove pieces are made for this.
How long does a commercial kitchen tile job take?
It depends on size, demolition and cure times. Small areas can be done over a weekend, while full kitchens are often phased over several nights or weeks to keep the business running.
Planning Your Floor
A durable commercial quarry tile installation comes down to a handful of decisions made early: slope and drains, a sound concrete substrate, waterproofing up the walls, full mortar coverage, epoxy grout and movement joints. Get those right and quarry tile flooring will outlast several kitchen renovations.
FIXO plans commercial tile projects around business hours throughout Northern Virginia, suburban Maryland and the District. Visit our tile flooring installation page, or use the contact page to arrange a site visit for your kitchen.
