Solar attic fan install was supposed to be easy... right?

"Ended up using enough sealant to waterproof a submarine."

Haha, been there myself - sealant can be a lifesaver or a slippery slope. Flashing kits always seem straightforward until you're actually on the roof, dealing with uneven shingles and unexpected gaps. Good job sticking with it, though. The first install is always the toughest; next time you'll know exactly what to expect... or at least what to avoid.

Haha, I get the submarine reference. But seriously, while generous sealant application might seem reassuring, it's best to focus on proper flashing techniques first. Sealant is really meant as a secondary defense - over-relying on it can lead to future issues when it inevitably deteriorates. Next time, try dry-fitting everything beforehand so you can spot those uneven shingles or tricky gaps early. Saves a ton of hassle when you're already up there balancing tools and materials... trust me on this one.

Good points about dry-fitting and flashing. I've seen a few installs where folks went heavy on sealant, thinking more is better, only to regret it later when it cracked or peeled. Curious though, has anyone tried using eco-friendly sealants or alternatives like liquid rubber coatings? Wondering if those hold up better over time or if they're just marketing hype...

I've actually tried one of those eco-friendly sealants on a shed roof project last summer - can't recall the exact brand, but it was marketed as "green" and non-toxic. Honestly, it applied pretty smoothly and didn't have that harsh chemical smell, which was nice. But I'm still a bit skeptical about long-term durability. It's held up fine so far, but one year isn't exactly a long-term test, especially compared to traditional sealants I've used that lasted 5+ years before needing touch-ups.

Has anyone here had experience with these eco-friendly products beyond a couple of seasons? I'd be curious if they really stand up to harsh winters or intense sun exposure over multiple years. Or maybe there's a specific type or brand that's proven itself better than others...?

I used a similar eco-friendly sealant about three years back when I did a small greenhouse roof - can't recall exact brand either, but it was definitely marketed as plant-safe and non-toxic. Honestly, it's held up better than I expected through some pretty rough winters and plenty of sun exposure. A bit of fading, sure, but no leaks or cracking yet. Still, I'm curious how it'll do over five or more years... might be worth it just to avoid that nasty chemical smell alone, though!