A 1-part varnish can be applied over fully cured and sanded TotalBoat Wet Edge to form a clear coat, so long as the surface has been properly prepared and all products are allowed to cure as directed. It is strongly recommended to test this in an inconspicuous spot, or on a test panel. Varnishes have a tendency to amber with time and exposure. Performing a small test sample will give you a chance to see if you like the results, before attempting a larger project.