Clear coat can be put on: 1. Basic colours, 2. Existing Paintwork in sound condition Existing paintwork should first be dried, abraded and cleaned with a silicone remover. For dulling the colour we recommended the following: - grey unwoven abrasive fabric with dulling paste -abrasive paper with gradiation of 600 to 8000 (for Dulling wet), - abrasive paper with gradation of 360 to 400 (for dulling by machine).