Is TotalBoat Seal sandable and paintable? Eric Boudreau April 01, 2022 14:55 Updated Once fully cured, TotalBoat Seal can be sanded and painted. If the sealant is too rubbery and gummy to sand properly, it should be left to cure longer. Related articles Does TotalBoat Seal require a primer before application? Can I paint or stain 3M 5200 caulking? Is TotalBoat Seal an acceptable sealant for teak joints and deck seams? What is the cure time for TotalBoat Seal elastomeric sealant? What can TotalBoat Seal be used for? Comments 0 comments Article is closed for comments.