Can TotalBoat Halcyon be applied over TotalBoat Wood Sealer? Eric Boudreau April 01, 2022 14:53 Updated TotalBoat Halcyon can be applied directly over TotalBoat Wood Sealer only if the Wood Sealer has completely cured for 48 hours under normal cure conditions, and has been sanded with 320-grit sandpaper, in the direction of the grain. Related articles Can I apply TotalBoat Halcyon over an oil-based stain? Is TotalBoat Halcyon a water-based polyurethane? Can epoxy be applied over cured shellac? How do you spray TotalBoat Halcyon varnish? Can TotalBoat Halcyon be applied over another varnish? Comments 0 comments Please sign in to leave a comment.