Apply 2 thin coats of primer, as it is a very thin coating. The Clear Coat is much thicker and you only need to apply 1 generous coat.
The surface is touch dry at the point when a gloved finger is lightly touched against the paint surface and no mark is made in the paint nor is paint transferred to the glove.
In the specific case of PropOne primer, when brushing one coat over another, if the coat underneath is marked by the brushstroke, it isn’t touch dry.
Touch dry for the primer is the point at which the coating loses its “shine”.
Typically this overcoating window lasts anywhere between 3-10 minutes depending on the temperature.
For more information, please refer to the brief application guide and technical data sheet.