“My neighbor’s old felt roof is still holding up, so maybe install really is the key.”
I keep seeing this too—some of the oldest roofs around here (I’m on the coast in Maine) are just basic materials, but they were put on with real care. I do think install matters way more than people realize. That said, I switched to a green roof system last year (sedum mats over a membrane), and so far zero rust or leaks, plus it keeps the upstairs cooler. Not cheap, but honestly less hassle with salt air.
That’s interesting about the green roof—never actually seen one in person up here, but I’ve read they’re supposed to be really good for insulation. I’m curious, did you have to reinforce your roof structure for the extra weight? I’ve heard that’s a thing with sedum mats, especially if you get a lot of snow on top of it in winter.
About the install vs. materials debate, I keep going back and forth. My uncle’s place has the original rolled roofing from the 70s and it’s still watertight, but he’s super picky about flashing and always re-seals around the chimney every couple years. Meanwhile, my neighbor put on a fancy standing seam metal roof five years ago and already has rust spots near the ridge. Makes me wonder if it’s just the salt air or if something got missed during install—maybe a scratch in the coating or fasteners that weren’t stainless?
Anyone else notice certain metals hold up better than others? I’ve seen some aluminum roofs look almost new after a decade, but galvanized steel seems to pit pretty fast here. Is copper worth the price for coastal spots, or is it overkill? I’d love to hear what people are actually using that lasts—sometimes it feels like every house on my street has tried something different.
Also, does anyone do regular rinsing of their roof to get rid of salt buildup? Or is that just not practical with pitched roofs? I keep hearing mixed things about whether it actually helps or just wastes water.
- Definitely agree about install making a huge difference. I’ve seen metal roofs go bad quick if the fasteners aren’t right or if there’s a scratch in the finish—salt air finds any weak spot.
- Aluminum seems to hold up best around here (I’m on the coast too). Galvanized steel just doesn’t last, especially near the water. Copper looks amazing but yeah, the price is wild. Maybe worth it for a forever home?
- I’ve tried rinsing my own roof a couple times after storms, but honestly, with a steep pitch it’s not easy or super safe. Not sure it made much difference either.
- Maintenance like checking flashing and re-sealing seems to matter more than anything else. The folks who stay on top of that stuff always have fewer problems, no matter what material they use.
I get what you’re saying about maintenance being the big thing, but I’m not totally convinced it’s always enough, especially this close to the ocean. My neighbor’s place is only a few years older than mine, and he’s super diligent about checking flashing and sealing stuff up, but his galvanized roof still started rusting out after like 8 years. Meanwhile, another house down the street with aluminum panels looks almost new, and I doubt they’re up there every season. Maybe some materials just can’t keep up with the salt, no matter how on top of things you are?
Title: Salt Air and Metal Roofs—Material Choice Really Matters
I’ve seen this play out a bunch of times on jobs near the coast. Maintenance is huge, but honestly, some materials just don’t stand a chance against salt air, no matter how careful you are. Galvanized steel is a good example—it’s fine inland, but right by the ocean, it’s almost like the salt finds every weak spot. I remember working on a duplex about 300 yards from the beach. Both units had galvanized roofs installed around the same time, and both owners were pretty meticulous about upkeep. By year seven or eight, rust was showing up in weird spots—edges, fasteners, even some flat sections where water pooled after storms.
Meanwhile, there was an older house across the street with aluminum panels that looked almost untouched. The owner told me he barely did anything besides clearing off leaves now and then. It’s not just luck—aluminum doesn’t react with salt the same way steel does. Even stainless steel can have issues if it’s not the right grade (304 vs 316 makes a difference), but aluminum holds up better in salty environments.
I get why people go for galvanized—it’s cheaper up front and easy to find—but if you’re within a mile or two of the ocean, it’s kind of fighting a losing battle. Paint systems help a bit, but once there’s any scratch or exposed edge, corrosion sets in fast. I’ve also seen some folks try zinc coatings or special sealants, but those only buy you time.
It’s not just about metal either—fasteners matter too. I’ve seen roofs where the panels were fine but all the screws rusted out and started leaking. Stainless or coated fasteners are worth every penny near saltwater.
Bottom line, maintenance helps slow things down, but material choice is huge when you’re dealing with salt air. Sometimes spending more up front saves you from replacing everything way sooner than you’d expect... Learned that one the hard way after having to redo a roof I thought would last twice as long.
