What is a PEI rating?

The Porcelain Enamel Institute (PEI) developed this five-point rating system to classify tile durability based on how surfaces withstand foot traffic and daily use. Ratings range from 0 (least durable) to 5 (most durable), with each level tied to specific applications and traffic conditions.

PEI 0 and 1 tiles work for walls and low-traffic areas like master bedrooms or guest baths, where foot traffic is minimal. PEI 2 and 3 suit residential kitchens, bathrooms, and living spaces with normal household traffic. PEI 4 is appropriate for kitchens with moderate commercial use or high-traffic residential areas. PEI 5 tiles handle heavy commercial traffic, such as retail spaces, restaurants, hospitals, and hallways in large buildings.

The rating reflects the glaze's resistance to scratches, scuffing, and glazing loss from abrasion. A tile with a lower PEI number may work fine in a low-traffic powder room but will scratch and dull quickly in a busy kitchen or entryway. Contractors and homeowners check this rating to match tile selection to expected use patterns and protect against premature wear. Finding the right PEI level ensures the floor performs as intended and maintains its appearance over time. Tile and stone flooring providers in Connecticut can help you select appropriate materials for your project's traffic demands.