With ships, they'll bolt zinc blocks on, can I "re-galvanize" metal?
I ask as I have some flashing that was likely installed in 1938. It was galvanized and is in reasonably good shape. But replacing it would be very expensive and hard, as it laps under the stucco. What can do to extend its life? Or will it rust under the stucco first anyway, making a external treatment moot?
Here's the specific flashing, with two rows of tile removed: