Has anyone actually seen a big difference in longevity between brands of synthetic? Some claim “high wind resistance,” but I haven’t noticed much in practice.
I’ve been wondering the same thing. We used one of the “premium” synthetics on a job last fall—can’t remember the brand, but it had all the fancy wind ratings on the wrapper. Honestly, after a couple of storms, it didn’t seem any better than the cheaper stuff we used before. The edges still tried to curl up if we didn’t get shingles on quick. Maybe it’s more about how you install it than what brand you pick? Or maybe the marketing just oversells it.
Cap nails every six inches feels like overkill, but I’ve seen what happens when you try to stretch it out. We had a section where we went more like 10-12 inches apart (trying to save time, not my idea), and sure enough, the wind got under there and made a mess. Had to redo it. I guess the fastener pattern really does matter, even if it feels tedious.
Peel-and-stick is nice, but yeah, the price hurts. We only use it on low slopes or spots that always get hammered by weather. For regular pitches, I haven’t seen a huge difference unless there’s a big delay before shingles go on. Maybe it’s more peace of mind than anything else.
Curious if anyone’s tried those “walkable” synthetics that claim to be slip-resistant? I nearly went skating off a roof last winter when the felt got frosty. Wondering if those are actually safer or just another gimmick.
Anyway, I’m still waiting to see a synthetic that really lives up to the hype. Maybe it’s just wishful thinking, but I’d love to find one that actually stays put without needing a million nails and doesn’t cost a fortune.
Maybe it’s more about how you install it than what brand you pick? Or maybe the marketing just oversells it.
Honestly, I’m with you on this. I’ve tried a couple of those “walkable” synthetics—Grip-Rite and GAF’s Tiger Paw come to mind. They’re a little grippier, but if there’s frost or pollen, nothing is really slip-proof. As for wind resistance, I’ve seen cheap stuff hold up better than “premium” underlayments just because someone actually followed the fastener pattern. The brand hype feels a bit overblown unless you’re in hurricane country or leaving it exposed for weeks. For most jobs, solid install seems to matter more than the label on the roll.
I hear you on the install being the real difference-maker. I’ve seen “budget” underlayment outlast the fancy stuff just because the crew actually paid attention to the nailing pattern and overlaps. Honestly, I think a lot of the “premium” labels are just marketing—unless you’re in a spot where you’re leaving it exposed for weeks or dealing with crazy weather. Around here, as long as you don’t cut corners, most synthetics hold up fine. That said, I do like the grippy ones for steep pitches... but nothing’s saving you from pollen season.
I hear you on the install being the real difference-maker. I’ve seen “budget” underlayment outlast the fancy stuff just because the crew actually paid attention to the nailing pattern and ove...
I get where you’re coming from, but I’ve actually had a different experience with the budget stuff. Maybe it’s our crazy freeze-thaw cycles, but the cheaper underlayment I used on my garage started curling up after two winters. It was installed right, too—followed all the nailing and overlap rules. I do think install matters most, but sometimes the “premium” label isn’t just hype, especially if you’re in a spot with wild weather swings. Still, for a basic roof and mild climate, yeah, the fancy stuff probably isn’t worth it.
That’s interesting about the freeze-thaw cycles. I’m in a spot where we get a lot of rain but not much snow, so maybe that’s why I haven’t seen as much curling or lifting with the cheaper stuff. When we did my uncle’s shed last year, we used a basic synthetic underlayment—nothing fancy, just what was on sale at the supply yard. We made sure to follow the nailing pattern (every 6 inches on the laps, 12 in the field), overlapped by at least 4 inches, and taped the seams. It’s held up fine so far, but then again, our winters are pretty mild.
I do wonder if some of these “premium” products are more about peace of mind than actual performance in certain climates. Like, if you’re dealing with ice dams or wild temp swings, maybe it really is worth paying extra for something that won’t get brittle or start peeling up after a couple seasons. On the other hand, I’ve seen some high-end underlayments that were a pain to work with—super slippery or hard to cut—and that slowed us down more than anything.
One thing I haven’t figured out is how much ventilation plays into all this. If you’ve got good airflow in your attic or roof deck, does that help keep underlayment from breaking down? Or is it mostly about direct exposure and moisture getting underneath? I’ve heard mixed things from different roofers around here.
Curious if anyone’s tried those peel-and-stick membranes as a full underlayment layer instead of just at the eaves and valleys. Seems like overkill for most jobs, but maybe it makes sense somewhere with constant freeze-thaw cycles...
