PEI Wear Resistance Classes of Porcelain Stoneware: Guide for Commercial Project Outfitters

A mistake in choosing floor coverings for a commercial space can cost hundreds of thousands. If porcelain stoneware in an operating shopping center or restaurant begins to wear out, crack, or lose color, the owner is forced to stop business for repairs. To avoid this, architects and project outfitters rely on a strict international standard — the PEI wear resistance class.

Experts from the national B2B distributor GTC "Antey" have prepared a detailed technical guide. We will analyze how to correctly read porcelain stoneware markings so that the covering serves for decades under extreme traffic conditions.

What is the PEI index and why is it critical for business?

PEI (Porcelain Enamel Institute) is an international indicator of glazed tile resistance to abrasion. It is determined in laboratory conditions: the tile surface is subjected to an abrasive roller, imitating the steps of people with sand and dirt on their soles. Depending on the number of revolutions at which visible damage appears, the material is assigned a class from I to V.

PEI Classification: Which porcelain tile will withstand your traffic?

For commercial objects, only classes starting from III are considered. Using lower classes is a direct violation of operational technology.

Selection Specifics for Different Types of Commerce

Malls and Supermarkets: Extreme Loads

For shopping centers where tens of thousands of people pass daily with abrasives (sand) on their shoes, and where cleaning equipment operates, glazed porcelain stoneware is often not suitable at all.
Expert solution: Use homogeneous (unglazed) full-body porcelain stoneware. In such a material, the pattern runs through the entire thickness of the tile (from 10 mm). Even if the top layer wears down by a millimeter after 10 years, the color and texture will remain unchanged. The class is exclusively PEI V. Reliable solutions of this level for ultra-large areas are offered by factories Seramiksan, QUA Granite, and Cerdisa.

Restaurants and HoReCa: Aesthetics plus Safety

In food establishments, the load is distributed unevenly. The main traffic is concentrated near the bar counter and at the entrances to the restrooms.
Expert solution: For dining halls, designer porcelain stoneware imitating wood or stone of class PEI IV from brands such as Inspiro, Prissmacer, or Peronda is suitable. For professional kitchens, the main criterion is not only PEI but also acid resistance (class A or AA) and an anti-slip coefficient of no lower than R11-R12 to avoid staff injuries on wet and greasy floors.

Office Centers: Local Abrasion

The main enemy of an office floor is not dirt from the street, but the wheels of office chairs that rub the same spot for years.
Expert solution: PEI IV porcelain stoneware. It is advisable to avoid perfectly glossy surfaces (polished porcelain stoneware), as micro-scratches from chairs will become noticeable within a few months. Choose matte or lappato (semi-polished) textures, which are widely represented in Italian collections from Refin, Ragno, and Pastorelli.

Not Just PEI: 3 Factors Often Forgotten During Procurement

• Anti-slip (R-coefficient): For entrance groups and steps, an indicator from R10 to R13 (structured surface) is mandatory. Smooth glossy tiles at the entrance turn into a skating rink in winter, threatening lawsuits from visitors.
• Rectification: For commerce, choose exclusively rectified porcelain stoneware (with perfectly evenly cut edges). It is laid with a minimal joint (1.5-2 mm). A smaller joint means less dirt gets trapped, and cleaning equipment works easier.
• Format: Large-format porcelain stoneware (60x120, 80x80, and more) speeds up installation over large areas and reduces the number of joints, making the covering more monolithic.

GTC "Antey" — Your Reliable Partner in Project Supply

The Group of Trading Companies "Antey" carries out direct wholesale deliveries of porcelain stoneware for construction companies, developers, and architectural bureaus. We understand the specifics of commercial properties, therefore we provide:

• Material selection to fit your budget and technical specifications.
• Uninterrupted logistics from our own warehouses (over 20,000 m² of stock).
• Provision of a full package of quality certificates for commissioning the facility.