The Dutch Floor Testing Company conducts surface roughness measurements or skid resistance measurements of among other things parking levels. Upon request we will issue a certificate if the standard has been met.

Parking levels may cause nasty falls, accidents or slips with far-reaching medical and financial consequences. Often this is due to the fact that floors are too slippery, too rough, or they are wet or soiled.
If you suspect that your floor is not safe, or if you want to be absolutely certain that your floor is safe enough: The Dutch Floor Testing Company measures the surface roughness or skid resistance of almost all floors.

Measuring method: NEN-EN 13036-4
Measuring instrument: Pendulum Skid Resistance Tester (SRT tester). Slider: 57

If necessary, the measuring results are adjusted by a factor that takes into account the actual temperature at the time of the measurements.
The measurements are carried out on a wet surface. This may be moisturised in advance.

Type of surface: metal, synthetic, concrete, asphalt, tiles, wood, wearing courses.
At each location, the instrument is checked by means of a zero measurement, and adjusted. Several measurements are carried out. As soon as the measured values are relatively constant, 5 measured values are recorded. In addition, the temperature and the type of surface are recorded.

The average of the 5 measured values is the measured value, which, if required, is adjusted by a factor due to the actual temperature at the time of the measurements. This is described in NEN-EN 13036-4.

Requirements / testing: NEN 2443 (NL)
Parking and storing of passenger cars on parking lots and in garages. Outside the driving lanes and parking roads the measured value must be equal to 35 or above. For covered ramps and driving lanes the measured value must be equal to 45 or above. For open ramps for car traffic the measured value must be equal to 65 or above