I’ve seen a lot of those so-called “corrosion barriers” fail faster than the marketing would have you believe, especially in coastal zones. The salt air just finds its way in, and once it does, even the best tapes or coatings start to peel or bubble. I’ve tested a few different sealants—some of the high-end marine-grade stuff lasted maybe three years before showing signs of breakdown. Nothing I’ve come across has really made it past five years without some kind of maintenance.
Mixing metals is definitely asking for trouble near the ocean. Galvanic corrosion kicks in fast, and no barrier seems to stop it for long. Using all one metal (like all stainless or all aluminum) is pricey up front, but honestly, it’s less hassle over time. If you’re stuck with mixed metals, regular inspection and touch-ups are about the only way to keep ahead of it.
I wish there was a magic product that held up indefinitely, but in my experience, it’s more about slowing the process than stopping it. The ocean always wins eventually...
Yeah, I hear you. I moved near the coast last year and already noticed rust spots on some of the metal trim, even though it was supposed to be “coastal rated.” It’s frustrating, but I guess regular upkeep is just part of the deal. At least you’re not alone—seems like everyone’s fighting the same battle.
