Can TotalBoat Halcyon be applied over Sikkens Cetol? Eric Boudreau April 01, 2022 14:53 Updated TotalBoat Halcyon varnish should not be applied directly over Sikkens Cetol. Cetol should be removed prior to applying Halcyon. Related articles Should TotalBoat Gleam 2.0 be stirred before use? What is the base of the TotalBoat Danish Teak Sealer? Can TotalBoat Lust be applied directly over TotalBoat Marine Wood Finish? Can TotalBoat Marine Wood finish be applied directly over Sikkens Cetol? Can more than 5 coats of TotalBoat Halcyon varnish be applied in a single day? Comments 0 comments Please sign in to leave a comment.