Commercial Tile for Restaurants & Retail: What to Specify

If you're planning a restaurant, café, or retail build-out in Montreal, tile is not just a design decision — it's a liability decision. Most homeowners choosing tile never think about two numbers: PEI rating and DCOF. In a commercial space, both are not optional. A beautiful tile that isn't rated for commercial foot traffic will show visible wear within a year. A tile that looks non-slip but tests below code minimums is a slip-and-fall claim waiting to happen, and in Quebec, that liability generally falls on the property owner or operator, not the tile itself. Here's what restaurant owners, retail operators, and the contractors who work with them need to know before specifying tile for a commercial space.

PEI Rating: How Much Abuse Can the Tile Actually Take?

The PEI rating (Porcelain Enamel Institute) measures a tile's resistance to surface abrasion on a scale of 0 to 5. It's the number that tells you whether a tile will hold up to years of foot traffic or start looking scuffed and dull within months.

• PEI 0–2: Wall tile only, not rated for foot traffic at all.

• PEI 3: Light residential foot traffic — fine for a bedroom, wrong for a business. •PEI 4: Medium-to-heavy traffic, suitable for most retail floors and restaurant dining rooms.

• PEI 5: Heavy commercial and light industrial traffic — the standard for restaurant kitchens and high-volume retail.

A tile that looks identical to a PEI 5 product but is only rated PEI 3 will look tired within a year of daily restaurant traffic. This is one of the most common — and most expensive — mistakes we see in commercial fit-outs.

DCOF: The Number That Actually Prevents Slip-and-Fall Claims

DCOF (Dynamic Coefficient of Friction) measures how slip-resistant a tile is when wet — and it's a code issue, not just a safety preference. Under ANSI A326.3, the industry standard referenced across North America, level interior floors that may be walked on when wet need a minimum wet DCOF of 0.42.

That's a floor minimum, not a target. Front-of-house dining areas are typically specified right around 0.42, usually with a textured porcelain. Kitchens need considerably more: unglazed quarry tile (DCOF roughly 0.55 to 0.72) or an abrasive, grit-surface porcelain rated R12 to R13 — especially near fryers, dish pits, and other grease-heavy zones, where DCOF should sit at 0.70 or higher.

One detail that catches people off guard: a tile's tested DCOF is a lab number on a new sample. Wear, grease buildup, and the wrong cleaning products can lower a floor's real-world slip resistance over time — which is exactly why we specify well above the minimum, not right at it.

Match the Tile to the Zone, Not the Whole Space

A restaurant or retail space isn't one flooring decision — it's several. Front-of-house dining prioritizes look and a moderate DCOF. The kitchen and prep areas need the highest PEI and DCOF ratings in the building. Restrooms need a wet-rated, easy-to-clean surface. And entryways — especially in Montreal — need their own consideration entirely.

Why Montreal Entryways Deserve Special Attention

For roughly five months of the year, customers are tracking in slush, road salt, and meltwater every time the door opens. An entry zone specified at the bare code minimum will feel noticeably more slippery in February than it tested in a lab. We typically specify entry and vestibule tile above 0.60 DCOF, with a floor mat transition zone built into the design, specifically because of how much moisture Montreal winters bring through the front door.

Getting the Installation Right, Not Just the Material

Specifying the right tile is half the job. Commercial installations also need grout joints sized and sealed to meet health code cleanability standards, ADA-compliant thresholds and transitions between zones, and an installer who understands that commercial tile is handled differently than a residential floor — larger areas, tighter timelines around a business's operating hours, and zero tolerance for a floor that fails inspection.

Tile specification for a commercial space touches your insurance, your code compliance, and your maintenance budget for the next decade — it's worth getting right the first time. If you're planning a restaurant, café, or retail build-out in Montreal, book a consultation with Ceramique Costa. We work directly with owners, general contractors, and architects to specify and install tile that meets commercial code from day one.