Can I sand TotalBoat Seal or apply paint over it? Annette DiOrio December 08, 2021 21:05 Updated Yes, after TotalBoat Seal elastomeric sealant is fully cured, you can sand it and apply paint. Related articles Do I need to prime the surface before using TotalBoat Seal? What is the shelf life for TotalBoat Seal? How long does TotalBoat Seal take to cure? Can I use TotalBoat Seal on teak deck seams? Can I use TotalBoat Seal below the waterline? Comments 0 comments Please sign in to leave a comment.