How long does it take TotalBoat Gleam 2.0 spar varnish to cure completely? Annette DiOrio August 05, 2022 15:48 Updated Under normal curing conditions, the full cure time for TotalBoat Gleam 2.0 spar varnish is 5-7 days. Related articles What are the differences between TotalBoat Gleam 2.0 Varnish and TotalBoat Lust Varnish? Can I apply TotalBoat Lust varnish below the waterline on my boat? Varnish compatibility with different substrates Can I apply TotalBoat Gleam 2.0 spar varnish to concrete? What spray equipment should I use to apply TotalBoat Halcyon varnish? Comments 0 comments Please sign in to leave a comment.