Do I need to prime the surface before using TotalBoat Seal? Annette DiOrio December 08, 2021 20:41 Updated No, you do not need to prime the surface before using TotalBoat Seal elastomeric sealant. Related articles Can I sand TotalBoat Seal or apply paint over it? What are the recommended applications for TotalBoat Seal elastomeric sealant? What is the shelf life for TotalBoat Seal? How long does TotalBoat Seal take to cure? Does the TotalBoat UV Cure flashlight come with batteries? Comments 0 comments Please sign in to leave a comment.