Does TotalBoat Seal require a primer before application? Eric Boudreau April 01, 2022 14:55 Updated TotalBoat Seal elastomeric sealant does not require any primers before applying it to a substrate. Related articles Is TotalBoat Seal sandable and paintable? What can TotalBoat Seal be used for? How long is the shelf life for TotalBoat Seal? Is TotalBoat Seal an acceptable sealant for teak joints and deck seams? Is TotalBoat Seal okay to use below the waterline? Comments 0 comments Article is closed for comments.