Getting attic airflow right: my step-by-step for better roof health

That’s a really good point about the Midwest weather - ours goes from humid and muggy to dry and freezing in a matter of weeks, so I totally get being wary of “quick fixes.” I went with galvanized mesh last year (mostly because it was cheap and I was overwhelmed), but it’s already showing some rust. Kinda kicking myself for not just spending the extra on stainless. Haven’t noticed condensation yet, but I’m watching for it since our attic’s always been a little musty. Definitely agree that sometimes saving a few bucks up front just isn’t worth the headache later.

I hear you on the galvanized mesh - did the same thing a couple years back because it was cheap and I just wanted to get it done. Midwest weather is brutal on anything that’s not built to last, honestly. Stainless is pricier but in hindsight, probably worth it for peace of mind. At least you’re keeping an eye on condensation... that musty attic smell is always a red flag for me too. Live and learn, right?

Funny you mention the musty smell - mine started after a wet spring and I realized my soffit vents were basically blocked by old insulation. Here’s what worked for me: first, I cleared out the insulation around the vents (used baffles to keep it open). Then I swapped the mesh for stainless, yeah it cost more but no rust so far. Last step, I added a cheap humidity sensor up there. Not perfect, but airflow’s way better and that smell is gone. Anyone else notice how much difference just unblocking vents makes?

- Gotta say, I tried the baffle thing but ended up with a squirrel party in my attic. Stainless mesh is solid, but I went with aluminum - cheaper and still holding up (so far).
- Unblocking vents definitely helped, but I also had to add a ridge vent. Just clearing soffits wasn’t enough for my old house - airflow was still kinda meh.
- Humidity sensor’s a good call. Mine’s always yelling at me after laundry day...
- Not sure if it’s just me, but sometimes the musty smell comes back after heavy rain, even with open vents. Maybe it’s just my luck or these 80s builds.

- Squirrel invasions are no joke - seen plenty of chewed wires after folks tried DIY baffles. Mesh makes a difference, but I’ve noticed aluminum can get bent up faster during storms, especially if you’re in a windy spot.
- Ridge vents do help balance things out, though in older homes with weird rooflines, sometimes you need more than just one.
- Humidity spikes after laundry are super common, especially if dryer vents aren’t sealed tight or vented outside properly.
- Musty smells after rain could mean water’s getting in somewhere - seen it a lot with older flashing or missing shingle tabs.
- Curious, have you checked for any hidden leaks or damp insulation after those storms? Sometimes moisture sneaks in even with good airflow.