Can a 2-part finish be used over TotalBoat Topside Primer? Eric Boudreau August 06, 2020 14:32 Updated TotalBoat Topside Primer is a unique 1-part primer that can handle both 1- and 2-part finishes. The stronger solvent content of the 2-part finish will not affect the TotalBoat Topside Primer. It should be understood that some paint manufacturers require the use of a specified primer, for coating warranties. Related articles Caulking and Marine Sealant Coverage Chart Can I use a two-part epoxy primer over my current topside paint? Comments 0 comments Please sign in to leave a comment.