This European Standard specifies a test method to determine the slip resistance value of the surface of the exposed face of natural stone elements intended to be used for flooring in buildings.
NOTE 1 If the surface of the exposed face has a roughness measured according to prEN 13373 higher than 1 mm it will be considered as not slippery, without performing the test.
NOTE 2 This method can be used for laboratory measurements or on floors in service.