Water based products never work, especially outdoors.
Minwax Helmsman Water Based Spar Urethane is not a good choice.
Something like Rust-Oleum Marine Coatings Spar Varnish Gloss Clear Oil-based Marine Varnish would be a better choice.
You should avoid anything that says water based or "Low VOC".
Minwax Helmsman Water Based Spar Urethane is not a good choice.
Something like Rust-Oleum Marine Coatings Spar Varnish Gloss Clear Oil-based Marine Varnish would be a better choice.
You should avoid anything that says water based or "Low VOC".