Surface Microroughness is a component of surface texture, it is generally determined by looking at deviations from the normal (mean line) profile of the surface. If these deviations are large the surface is rough, if they are small the surface is smooth. Using a tool with a stylus to measure these variations, a Rz value is able to be calculated. The Rz parameter is the mean value of the maximum peak to valley height of the profile within the sampling lengths.
This test has been performed to assess the Macro and Micro Roughness (Rz value) of the surface of the coating used on the AliDeck Aluminium Decking Range in order to ascertain Slip Potential against the following values: