Buy Unglazed Zellige Tile From A-Diffusion

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I.What is China's National Standard for Tile Anti-Slip Ratings?



China's current applicable standard is GB/T 4100-2015 《Ceramic Tiles》. In this standard, anti-slip performance is evaluated based on two indicators: Static Friction Coefficient (COF) and Dynamic Friction Coefficient (DIN), and is classified into 5 grades:




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R9 (COF ≥ 0.5): Mild antislip, 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.






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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 StandardsEurope 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).



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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).
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一、Tile Laying Process Flow1. Preparation
Prepare tiles, tile adhesive/cement mortar, notched trowel, level, rubber mallet, masking tape, grout and other tools & materials; cut tiles in advance according to the size of the laying area (avoid small cut pieces gathering at corners).



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2.Base Layer Treatment：
Clean dust, oil stains and hollow areas on the wall/floor; if the base layer flatness error is ＞3mm, level it with cement mortar; spray water to moisten the wall before laying (to improve adhesion).

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3.Snap Line Positioning


Use a chalk line to snap horizontal and vertical lines, marking the reference for tile laying; plan the layout according to tile size (e.g., lay whole tiles first at door/window openings to ensure visual neatness).




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标记






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4.Mixing & Application


Stir tile adhesive/cement mortar until there are no particles and it is paste-like (let it stand for 5 minutes, then stir again); use a notched trowel to evenly apply it on the base layer along the reference line (thickness 5-8mm, trowel tooth depth matches tile size).




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涂抹瓷砖胶






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5. Tile Laying
Press the tile lightly on the adhesive layer, tap the four corners with a rubber mallet (ensure tight fit without hollowing); check flatness with a level, error ≤1mm; leave 2-3mm expansion gaps between adjacent tiles (prevent cracking from thermal expansion).




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贴砖2






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6. Gap Treatment
24 hours after laying, clean stains on the tile surface; use a grout gun to fill gaps with grout (full without gaps); when the grout is semi-dry, wipe off residual grout with a damp sponge.


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填缝






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7. Curing & Protection
Avoid stepping on or getting water on the grout after filling; cure naturally for 3-5 days; cover with a protective film during curing (prevent dust pollution or external damage).






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瓷砖养护






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二、Tile Laying Precautions


1.Before Laying
Check tile batches: Use tiles from the same batch in the same area (avoid color difference);
Soak tiles (only for tiles with water absorption rate ＞10%): Soak until no bubbles appear, then fish out and drain (prevent hollowing caused by tiles absorbing moisture from the adhesive layer).






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IMG_20230914_144257






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2.During Laying
Adhesive layer to be mixed and used immediately: Tile adhesive/cement mortar must be used within 2 hours after mixing (avoid solidification and failure);
Adjust deviations in time: If tiles are tilted or hollow, re-lay them before the adhesive layer solidifies (within 1 hour).




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3.After Laying
Prohibit early use: Do not roll heavy objects on the floor within 7 days after laying; do not hang heavy objects on the wall within 10 days after laying;
Cleaning taboos: Do not scratch the tile surface with sharp tools; clean stains with neutral detergent (prevent corrosion of tiles or grout).