or if it’s just a fad.
Had the same thing happen—flashing looked fine from my driveway, but up close it was basically confetti. I tried to convince myself those rubber options were the future, but after one winter here, I’m glad I stuck with metal. Maybe in milder climates they’ll catch on, but our freeze-thaw just chews up anything soft.
I had a similar experience with the “new” rubber flashing options. Looked good in the catalog, but after our first real cold snap, I noticed the edges pulling up and a couple spots where it had started to crack. Didn’t even make it through the first year before I was patching things up. I’m in the upper Midwest, so we get those wild temperature swings—freeze, thaw, repeat. Metal’s not perfect, but it’s held up way better for me.
I do get why people want to try the newer stuff, especially if you’re somewhere with milder winters. The rubber’s easier to work with and supposedly seals better at first. But around here, the expansion and contraction just destroys it. My neighbor tried a synthetic underlayment last year, too—he’s already talking about going back to felt because of some weird bubbling and leaks after a hailstorm.
Honestly, regular roof checkups have saved me a lot of hassle. I caught a couple small leaks around my vent pipes before they turned into a bigger problem. It’s not fun crawling around up there, but it’s better than dealing with water stains in the living room. I get why some folks want to try new materials, but for my money, tried-and-true metal flashing and old-school underlayment have been the most reliable. Maybe in a different climate I’d feel differently, but for now, I’m sticking with what works—even if it’s not the trendiest option.
That freeze-thaw cycle up here really does a number on anything flexible, doesn’t it? I’ve seen a lot of those newer rubber flashings look great for a season, then start curling or splitting once winter hits. Folks get sold on the “easy install” part, but nobody mentions how they’ll hold up after a couple years of Midwest weather. I’ve crawled up on more than a few roofs where the only thing keeping water out was a bit of luck and some creative caulking.
Metal flashing isn’t perfect—sometimes you get rust or the seams pull apart if it wasn’t installed right—but at least you can see what’s going on and patch it before it gets ugly. I always tell people, even if you’re not comfortable doing repairs, just taking a peek every spring and fall makes a huge difference. Caught a cracked boot around my own vent pipe last year before it turned into a waterfall in the attic.
I get the appeal of new materials, but up here, tried-and-true seems to win out more often than not. Maybe if we didn’t have six months of winter, I’d feel differently...
I get where you’re coming from about the freeze-thaw cycle—our winters are brutal on anything that isn’t rock solid. But I’ve actually had a pretty different experience with the newer rubber flashings, at least so far. My house is only a few years old, and the builder used those flexible boots around all the vent pipes. I was kind of skeptical after reading horror stories online, but after two winters (and one of them was a real doozy), they’re still looking decent. No cracks or splits yet, though I’m definitely keeping an eye out.
I wonder if it’s partly down to the specific brand or maybe just luck with installation? I did notice when I was up there last fall that the ones on the south side, where the sun hits hardest, are starting to look a little faded compared to the north side. Maybe UV is as much of a problem as the cold.
Metal flashing does seem more “set it and forget it,” but I’ve heard from neighbors that rust can sneak up fast if you don’t keep up with paint or sealant. One guy down the street had to replace a whole section because it corroded right through in less than ten years. That said, I totally agree about regular checkups—if I hadn’t gone up there to clear out leaves, I wouldn’t have spotted a nail pop that could’ve turned into a leak.
I guess my take is that both materials have their headaches. The new stuff might not be as bulletproof as advertised, but metal isn’t always maintenance-free either. For now, I’m just hoping my rubber boots hold out until I’m ready for a full roof replacement... which hopefully isn’t anytime soon.