Funny you mention the fasteners—I've seen more issues crop up from those than anything else on metal roofs. Had a client last year who thought he had a major leak, turned out it was just a couple of loose screws letting water sneak in during sideways rain. Ever had to re-tighten or replace any yet? I always wonder if folks keep up with that maintenance or just wait until there's a problem.
Had a client last year who thought he had a major leak, turned out it was just a couple of loose screws letting water sneak in during sideways rain.
That’s a classic. I’ve seen plenty of folks panic over what they think is a big roof failure, only to find it’s just a handful of fasteners that have backed out over time. But honestly, I don’t see fastener issues as the main headache with metal roofs—at least not compared to what I’ve run into with shingle blow-offs or flashing failures. Maybe it’s the climate here (lots of freeze/thaw), but I’ve found the seams and penetrations are more likely to be trouble spots than the screws themselves.
I do agree, though, most people don’t touch their roof until there’s a problem. I’ve crawled up on 10-year-old metal roofs where not a single screw’s been checked since install. Sometimes they’re fine, sometimes you find a few spinning loose. It’s hit or miss. Personally, I’d rather see folks do a quick check every couple years instead of waiting for water stains on the ceiling... but I get why most don’t bother until something goes wrong. Out of sight, out of mind, right?
Funny you mention the “out of sight, out of mind” thing—I’ve been guilty of that myself. I went up to clean the gutters last fall and found a couple screws just sitting on the panels, not even in the wood anymore. No leaks yet, but it was a wake-up call. I do think regular checks make a difference, especially with metal. And yeah, seams and penetrations are always where I see issues first, not so much the fasteners.
Regular checks are underrated, honestly. I’ve seen more trouble around skylights and vents than anywhere else—water just loves to find a way in at those seams. Fasteners, yeah, they’re sneaky... you think they’re fine until you spot one halfway out months later. Metal roofs hold up well, but only if you stay on top of those little issues before they turn into big ones.
Regular checks are underrated, honestly. I’ve seen more trouble around skylights and vents than anywhere else—water just loves to find a way in at those seams.
That’s the truth—water is like a ninja when it comes to sneaking in. I had a vent that looked perfectly fine from the ground, but after a big storm, I found out it was basically a waterslide into my attic. Ended up with a soggy insulation mess and a lesson learned: trust issues with vent flashing.
About metal roofs and lightning, though... I used to worry about that too, especially after my neighbor joked that my place would double as a giant lightning rod. Turns out, metal doesn’t actually attract lightning any more than other materials—it just conducts it better if it does get hit. The kicker is, it usually spreads the charge out safely as long as your house is grounded properly. My cousin’s place got struck once (not even a metal roof, just bad luck), and the only casualty was his old satellite dish.
Honestly, I’m more nervous about hail than lightning. Metal roofs can take a beating, but those big hailstones leave some pretty impressive dents. Anyone else had to deal with insurance over that? Mine tried to tell me “cosmetic damage isn’t covered”—like I wanted a polka-dotted roof for the aesthetic.
Curious if anyone here has actually had a direct lightning strike on their metal roof? Did grounding make any difference? Or did you just get an unexpected fireworks show?
