Anti-slip ratings for tiles, known as R-values, are determined through the Oil Wet Ramp Test. In this test, a person wearing cleated safety boots walks on an oiled ramp, with the angle adjusted until they slip. This angle generates the R-value, which indicates the tile's slip resistance.
Anti-Slip Tile Ratings at a Glance
DIN 51130 |
R9 |
R10 |
R11 |
R12 |
R13 |
Angle of inclination |
6-9 degrees |
10-18 degrees |
19-26 degrees |
27-34 degrees |
35 degrees |
Wet slip risk |
High |
Moderate |
Moderate |
Low |
Low |
Suitable for |
Dry areas |
Occassional wetness |
Wet/ Outdoor environment |
Wet/ Outdoor environment |
Very wet commercial areas |
R9 – Minimal Slip Resistance
- Features a matte, smooth surface.
- Best suited for dry areas like living rooms and bedrooms.
R10 – Moderate Slip Resistance
- Suitable for spaces with occasional wetness, such as kitchens and bathrooms.
R11 & R12 – High Slip Resistance
- Designed for both dry and wet environments.
- The textured surface makes them ideal for outdoor spaces and areas prone to water exposure.
R13 – Maximum Slip Resistance
- Rough, highly textured surface.
- Recommended exclusively for commercial areas constantly exposed to water.
Choosing the right anti-slip tile ensures safety and functionality in your space. Always consider the environment and slip resistance needs before selecting tiles!