Never, ever wax my glass off again

[stuendan]

Can anyone explain how it is that the black strip just under the gunwale maintains a good finish, as does the hull generally compared to everything above the gunwale?

[Chinook]

Pretty sure it's all about solar exposure. Strip on the side is mostly vertical, and somewhat shaded by the rub rail. Black surfaces around the windows is angled upward, at a nearly optimal angle to the sun a good amount of time.