【Industry News】Interpretation of China's National Standard for Tile Anti-Slip Ratings
- R9 (COF ≥ 0.5): Mild anti
slip, suitable for dry indoor environments (e.g., bedrooms, living rooms).
- R10 (COF ≥ 0.6): Moderate anti-slip,
suitable for occasionally wet and slippery areas such as kitchens and balconies.
- R11 (COF ≥ 0.7): Strong anti-slip,
recommended for high-frequency wet and slippery scenarios like bathrooms and restaurants.
- R12 (COF ≥ 0.8): High anti-slip,
used in public toilets, areas around swimming pools, etc.
- R13 (COF ≥ 0.9): Ultra-high anti-slip,
applicable to extreme environments such as ramps and industrial workshops.
Professional data source: Appendix M of GB/T 4100-2015 issued by 《the State Administration for Market Regulation of China》. The testing methods include the inclined platform method (EN 13036-4) and the pendulum test method (DIN 51130). A higher numerical value indicates stronger anti-slip performance.
II. How to Select Anti-Slip Ratings Based on Scenarios?
1. Residential Scenarios
For bathroom and kitchen floors, an anti-slip rating of **R11 or above** is recommended, especially for households with the elderly or children. - For living rooms and bedrooms, R9-R10 is a suitable choice, balancing safety and aesthetics.
2. Public Scenarios
Shopping malls, hospital corridors require an anti-slip rating of **R12 or above** to avoid slip risks in crowded areas. - Outdoor steps and ramps **mandatorily require R13**, in compliance with the "Technical Specification for Anti-slip of Building Flooring Engineering" (JGJ/T 331-2014).
III.Comparison of Differences Between International Standards and China's Standards
Europe and the United States commonly adopt standards such as ASTM C1028 (U.S.) and DIN 51130 (Germany). The main differences are as follows:
Testing Methods:
In the U.S., a dry/wet COF ≥ 0.6 is regarded as the safety threshold; in Germany, classification is based on ramp angles (e.g., Grade A corresponds to a 9°-10° incline).
Rating Labeling:
China directly labels with R-values; some European countries use the "ABC" classification (e.g., anti-slip Grade B ≈ R11).
IV. 3 Practical Tips to Avoid Mistakes When Purchasing Anti-Slip Tiles
1. Check the Test Report:
Request the merchant to provide anti-slip coefficient test data certified by CMA (China Inspection Body and Laboratory Mandatory Approval).
2. On-Site Verification:
Pour water on the tile surface on-site, then rub it with shoe soles to check for obvious resistance.
3. Focus on Surface Technology:
Prioritize tiles with matte finish, concave-convex texture, or anti-slip glaze treatment.
Additional Reminder: Anti-slip performance will deteriorate due to wear and tear during use. It is recommended to regularly clean oil stains and avoid waxing the tiles. During project acceptance, re-testing can be conducted in accordance with the "Standard for Testing Bond Strength of Facing Bricks in Building Engineering" (JGJ 110-2017).
