Tile Anti-Slip Ratings Explained
The Ramp Test and R Values are methods used to assess the slip resistance of porcelain tiles, especially in the context of safety and usability.
- Ramp Test: The Ramp Test, often referred to as the “Ramp Test for Slip Resistance,” is a standardised procedure used to evaluate the slip resistance of flooring materials, including porcelain tiles. It involves a specially designed inclined plane or ramp where the flooring material is tested to determine its slip resistance characteristics. During the test, a person walks on the surface of the tile, and the angle of the ramp is gradually increased until the person begins to slip. The angle at which this slip occurs is recorded, and this angle corresponds to a specific rating known as the “R rating” or “Ramp Test rating.” This rating is an important indicator of how slip-resistant a tile is, with higher R values indicating better slip resistance.
- R Values: R Values are numerical ratings assigned to porcelain tiles and other flooring materials after undergoing the Ramp Test. These values are used to communicate the slip resistance of the tile to consumers, architects, and builders. Higher R values indicate a greater resistance to slipping, making them suitable for areas where safety is a primary concern, such as bathrooms, kitchens, or commercial spaces. Different countries and regions may have their own standards for R Values, and it’s essential to check and understand the specific requirements and recommendations in your local building codes and regulations.
It’s important to choose porcelain tiles with appropriate R Values based on the intended use and location of the installation. Tiles with higher R Values are recommended for areas where there may be water exposure, like bathrooms, kitchens, or outdoor spaces, to reduce the risk of slips and falls. Additionally, considering the local building codes and safety regulations is crucial when selecting tiles for specific applications to ensure compliance with safety standards.
- Tiles rated as R9 offer minimal slip resistance and are best suited for dry indoor spaces like dining rooms and kitchens.
- Tiles with an R10 rating provide a moderate level of slip resistance, making them a suitable choice for bathroom floors.
- Tiles carrying an R11 rating offer strong slip resistance and are versatile for use in all indoor areas, including wet rooms, and can also be employed for outdoor applications.
DIN Standard Ramp Testing (DIN 51130) is an alternative to Pendulum Testing and generally categorised as an ‘off-site’ activity because of the size and complexity of the equipment required to carry out the test. The Slip Resistance Values (RSV) are factory gate values (based on supplied tiles) and categorised using the Ramp Test (DIN 51130) method which is commonly used by European factories. In this method, a lubricated inclined platform is adjusted to a gradually increasing gradient, and the angle is measured at which a person walking on it slips.
We have deliberately not included the ramp test angles on this page as this information can be confused with the angle that a floor may be safely set to, which is incorrect. The shod test results are quoted as an R Rating value from R9 to R13, which relates to the ramp angle.
| R Rating Value | Friction |
|---|---|
| R9 | Minimal |
| R10 | Normal |
| R11 | Good |
| R12 | Good |
| R13 | Very high |
See the Health and Safety Executives website for more information regarding the Ramp Test procedure. Ramp Test Certificate available on request.