finally found an underlayment that lasts - what's your experience?

I hear you on the felt tearing - seen that happen more than once after a windy night, and it’s a pain. I’m still a little skeptical about all the plastic in synthetics, though. Some of those brands claim to be “eco-friendly,” but I haven’t found one that really breaks down or recycles well. I do like the sanded ones for grip, but I wish there was a truly green option that didn’t turn into a slip-n-slide or a landfill problem. Maybe one day...

I get where you’re coming from on the plastic thing. I’ve been wrestling with that myself - my wallet loves the idea of a synthetic underlayment that actually survives more than two winters, but my conscience isn’t thrilled about adding more plastic to the world. I tried one of those “eco” brands last year (can’t remember the name, green label, lots of promises), and honestly, it still felt like glorified tarp. Didn’t tear as fast as felt, but it’s not exactly composting in my yard either.

The sanded ones are nice for grip, but man, when it rains hard, they get slicker than I expected. Nearly took a tumble up there trying to patch a vent. I keep hoping someone will invent something that’s tough, affordable, and doesn’t stick around for 500 years after you’re done with it. Until then, I’m just picking whatever keeps the leaks out and doesn’t break the bank... not perfect, but at least my living room stays dry.

I get the plastic guilt, but honestly, I’m not convinced the “eco” options are all that much better - at least not yet. I tried a recycled-fiber underlayment on my shed last fall, and it started curling at the edges after the first big freeze. Maybe it’s just our Midwest winters, but I ended up patching more than I’d like. I’d rather use something that lasts longer, even if it’s synthetic, than have to replace it every couple years. It’s a tradeoff, but constant repairs seem just as wasteful in the long run.

- Gotta say, I’ve had the opposite experience with the recycled stuff. Used a recycled-fiber underlayment on my garage roof (also Midwest), and it held up fine through two winters so far.
- Maybe it’s a brand thing? Or install method?
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“I’d rather use something that lasts longer, even if it’s synthetic, than have to replace it every couple years.”

- Seen a lot of recycled underlayments go both ways, honestly. Some hold up, some don’t. Always wonder if it’s more about the installer or just luck with batches.
- Midwest winters can be brutal - ice dams, freeze/thaw cycles, all that. I’ve seen synthetic rip up in crazy wind, but I’ve also seen felt disintegrate after a couple years.
- Brand does matter, but prep and install are huge. Did you guys use cap nails or staples? I’ve noticed staples tear through way easier when things get gusty.
- Noticed any issues with moisture getting trapped under the recycled stuff? Had one job where it didn’t breathe as well as advertised, and we ended up with mold.
- Anyone try those hybrid underlayments - part recycled, part synthetic? Curious if they’re actually splitting the difference or just marketing hype…