I get where you’re coming from, but honestly, I wouldn’t just brush off a stain, even if it’s faint. In my experience, those little spots can mean there’s a slow leak somewhere, especially around vent pipes or skylights. First thing I’d do is check the attic above that area for any dampness or mold—sometimes you can catch it before it gets worse. If it’s dry, maybe it’s old, but I’d still keep an eye on it after the next rain. I used to think I was being paranoid too, but ignoring a small stain cost me a lot more down the line. Better safe than sorry, especially if you’re watching your budget.
I get being cautious, but sometimes a faint stain really is just old water damage that’s already been fixed. I’ve seen spots that never got worse, even after heavy rain. Not saying ignore it, but tearing into the attic every time seems a bit much unless there’s other signs—like musty smells or peeling paint. Maybe just mark the spot and check it after a storm before going full detective mode.
That’s fair—sometimes a stain really is just leftover from an old leak. I’ve seen spots on TPO roofs that never changed for years, even after some nasty storms. But I do wonder, how often do you actually check those marked spots? Is it just after big weather events, or do you have a set schedule? I’ve heard some folks do quarterly checks, but that seems like overkill unless you’ve had issues before.
I get where you’re coming from—quarterly checks do sound a bit much unless you’ve had issues before. For us, we usually do a walk-through after any major storm, but otherwise stick to twice a year. I will say, with green roofs, it’s a little different since you’re also watching for plant health and drainage, not just leaks. Sometimes those old stains are just... there, and never get worse. But if you’ve got a history of trouble spots, it’s worth keeping an eye on them more often.
Quarterly checks seem like overkill for most setups, unless you’re dealing with a chronic problem or a warranty that requires it. I’m in the “twice a year” camp too, but only because I’ve learned the hard way that skipping those can cost more in the long run. My place has a low-slope membrane roof—nothing fancy, but it’s old enough that I don’t trust it to behave if I ignore it for a year.
After a big storm, I’ll do a quick walk myself, mostly just looking for obvious stuff—branches, pooling water, anything that looks out of place. If I see something off, I’ll call in a pro, but otherwise I try to avoid unnecessary expenses. For me, paying for four inspections a year just doesn’t add up, especially when budgets are tight.
I get the point about green roofs being a different animal. If you’ve got plants and drainage layers to watch, you probably do need to keep a closer eye on things. But with a standard flat roof, unless you’ve had leaks or visible damage before, twice a year seems reasonable. Old stains are tricky—they make you nervous, but if they’re not growing or changing, I usually just mark them on my “watch list” and move on.
One thing I’d add: if you’ve had insurance claims or repairs in the past, keep your inspection reports and photos organized. It’s saved me headaches when adjusters start asking questions. And if you’re in a spot with heavy snow or hail, maybe bump up the checks during those seasons. Otherwise, I’d say don’t let the maintenance companies talk you into more visits than you really need.
