Mounting solar panels: go with traditional flashing or try those newer deck-mounted seals?

I get the appeal of the new deck-mounted seals - my installer pitched them as a faster, cheaper option when I was looking at solar last year. I almost went for it, since the price difference was pretty noticeable (I think it was about $800 less for my 1,600 sq ft roof). But after reading up on it and talking to a neighbor who had issues with leaks around his deck-mounted system after just two winters, I stuck with traditional metal flashing.

My roof’s a 15-year-old asphalt shingle, moderate pitch, and we get a fair bit of snow and ice here in upstate NY. I’m pretty risk-averse when it comes to water damage - had a small leak in the attic a few years back and it was a pain to track down. The upfront cost for metal flashing was higher, but the warranty was better (25 years vs. 10 for the seals), and my insurance guy said they’re less likely to deny a claim if you use “industry standard” methods.

That said, I can see why people go for the deck seals, especially if you’ve got a newer roof or live somewhere dry. They’re definitely less hassle to install - no prying up shingles or messing with underlayment. If you’re paying for labor, that could save a chunk. But if you’re planning to keep the panels up for decades, I’d rather not gamble on something that might need redoing halfway through.

One thing I wish I’d done differently: I should’ve asked for photos during install. Would’ve made it easier to check if the flashing was tucked right. If you go the metal route, maybe ask for that - peace of mind is worth a few extra bucks.

Curious if anyone’s had good luck with the newer seals long-term, though. Maybe the tech’s improved since my install.

Curious if anyone’s had good luck with the newer seals long-term, though. Maybe the tech’s improved since my install.

I wondered the same thing when I was getting panels put up last spring. My installer swore by the deck seals, but I just couldn’t shake the image of water sneaking in somewhere down the line - maybe that’s just years of battling ice dams talking. My neighbor went the seal route on a newer roof and it’s been fine, but he’s only had one winter so far (not exactly a stress test). I’ll admit, the old-school metal flashing looked like overkill at first, but after seeing it tucked under my 18-year-old shingles, I sleep easier during those wild freeze-thaw cycles. Maybe in Arizona I’d feel differently...

I hear you on the freeze-thaw paranoia - after a few winters patching leaks in our older buildings, I’m team flashing too. The seals look slick, but I just don’t trust them for our wild New England weather. Maybe I’m old-fashioned, but dry ceilings are worth the extra hassle.

I just don’t trust them for our wild New England weather. Maybe I’m old-fashioned, but dry ceilings are worth the extra hassle.

I’m with you - after seeing what a single ice dam can do, I’m not taking shortcuts. My installer swore by those deck-mounted seals, but honestly, I’d rather have the redundancy of traditional flashing. Peace of mind is hard to put a price on, especially up here where the freeze-thaw cycles are brutal. Maybe it’s overkill, but I’d rather patch a little flashing than deal with a soaked attic.

I hear you on the peace of mind thing - ice dams are no joke. I did look at those deck-mounted seals but just kept picturing water sneaking in during a nor’easter. Maybe I’m paranoid, but I’d rather wrestle with flashing than play attic lifeguard. Anyone actually had luck with the newer seals through a full New England winter?