1. EN 14411 and CE marking
EN 14411 is the European standard for ceramic tiles. It classifies tiles by manufacturing method and water absorption. Pressed porcelain belongs to group BIa, with water absorption of 0.5 % or less, which makes it frost and stain resistant. White-body wall ceramic absorbs more water and is lighter and easier to cut.
2. Slip resistance: R9 to R12 and classes 1–3
Slip resistance is tested with different methods depending on the country. As a general guide:
- R9 / class 1: dry indoor areas (living rooms, bedrooms, offices).
- R10 / class 2: indoor areas that may get wet (bathrooms, kitchens, entrances).
- R11 / class 3: outdoors, ramps, level-access showers and pool surrounds.
- R12: industrial or highly exposed areas. Always confirm local requirements with the architect.
3. UPEC: the French reference
The CSTB’s UPEC classification (France) rates wear from foot traffic (U), indentation (P), behaviour with water (E) and chemicals (C). A U3 P3 E3 C2, for example, suits medium-traffic commercial premises. Several of our collections hold UPEC certificates for specific formats and colours, listed on their pages.
4. Other figures to check
For a project, it is also worth checking:
- Rectified: edges cut after firing, allowing 1.5–2 mm joints.
- Thickness: 20 mm for outdoor use on gravel or pedestals; XL slabs are often thinner and lighter per m².
- Frost and stain resistance (class 5 = the highest).
- Shade variation (V1–V4): the higher it is, the more each tile differs, which suits wood and stone looks.
