Salt-air corrosion is not a maintenance problem — it's a specification problem
Standard zinc-plated steel cables, black-oxide springs, and plain-steel rollers are engineered for an average North American garage — dry, temperate, indoor. In La Jolla they are being asked to survive a marine environment, and the standard hardware loses. On homes within a mile of the water — most of Bird Rock, Windansea, La Jolla Shores, and the flats below Prospect — we see cable failures inside three years on hardware that would last fifteen years inland.
The fix isn't a maintenance schedule. Wiping lithium grease on a cable that's already rusting from the inside does nothing for the fibers you can't see. The fix is upgrading the spec at install time: galvanized aircraft cable, stainless steel bearing plates, high-cycle springs with a corrosion coating rated for coastal exposure, and rollers with sealed stainless bearings instead of open steel ones. That's what we install by default from Windansea north to Torrey Pines.
If your La Jolla door is more than five years old and still on the original hardware, ask us to pull one cable and inspect it. The visible portion always looks fine — it's the section wound around the drum that tells the truth about how much life is left.

