Ventilation does matter though; if the attic’s running warm, you’ll get more ice damming and stress on the shingles.
That’s spot on. I’ve seen even newer roofs take a beating when the attic isn’t balanced—warm spots just chew up shingles over a few winters. One thing I’d add: roof pitch makes a difference too. My old place had a low slope and it always seemed to split faster than my current steeper roof, even with similar materials. Not sure if anyone else has noticed that, but it’s been my experience. Material quality is all over the place these days... some “30-year” shingles barely make it to 15 around here.
Funny, I’ve had almost the same experience with low slope vs. steep roofs. Grew up in a house with a pretty flat roof, and every winter the edges would crack and split, even though we’d just redone the shingles. Where I’m at now, the pitch is way steeper and it’s held up a lot better—less ice buildup for sure. Still, like you said, some of those “guaranteed” shingles are just not living up to their claims... makes me wonder if it’s the install or just the stuff they’re making these days.
- Had a similar issue on my old house—nearly flat roof, and the edges always took a beating in winter.
- Switched to a steeper pitch when we rebuilt, and yeah, way less ice damming. The snow just slides off now, which helps a ton.
- Noticed even “premium” shingles don’t last as long as the ones from 20+ years ago. Maybe it’s the materials, but I also think proper ventilation and underlayment make a bigger difference than most folks realize.
- One thing that helped me: adding a good ice & water shield at the eaves—cost a bit more but no more splits at the edges.
- Still, nothing’s perfect... I’ve seen metal roofs hold up better in wild weather, but they’re not cheap.
Noticed even “premium” shingles don’t last as long as the ones from 20+ years ago. Maybe it’s the materials, but I also think proper ventilation and underlayment make a bigger difference than most folks realize.
You’re spot on about ventilation and underlayment making a bigger impact than most people think. I’ve seen folks shell out for top-tier shingles, only to have them curl or split after a handful of rough winters because the attic was cooking them from below or trapping moisture. Still, I’d push back a bit on the idea that steeper pitch alone is the magic bullet for splitting and ice damming.
Here’s where I’ve seen things get tricky: even with a steeper roof, if your insulation and air sealing aren’t dialed in, you can still get ice dams—just maybe not as dramatic. Warm air sneaking up through gaps melts snow from underneath, then it refreezes at the colder eaves. That’s when you get those splits and leaks at the edges, shield or no shield.
What’s worked better for my clients (and my own roof) is a layered approach:
1. Air seal any gaps in your attic floor—think around light fixtures, pipes, chimneys.
2. Upgrade insulation if you can swing it. More R-value means less heat loss.
3. Make sure soffit and ridge vents are actually open and working, not stuffed with old insulation or bird nests.
4. THEN go for the good underlayment and ice & water shield at the eaves.
Metal roofs are definitely tough in wild weather—no argument there—but they can be noisy in hail or heavy rain, which some folks hate. And yeah, they cost more up front, but over 40-50 years, that price starts to look better if you’re planning to stay put.
One last thing: I’ve seen synthetic underlayments hold up way better than old-school felt, especially in freeze-thaw cycles. Might be worth looking into if you’re redoing things anyway.
Not saying there’s one answer for everyone—climate and budget play a huge role—but just swapping to a steeper pitch isn’t always enough if the rest of the system isn’t right.
I’ve got to agree that just going for a steeper pitch isn’t a cure-all, especially if you’re trying to stretch your dollars. I live in the Midwest, and after a couple of brutal winters, I learned the hard way that ventilation and insulation matter way more than I thought. We had a new roof put on about 8 years ago—mid-range architectural shingles, nothing fancy—and I figured that would be enough. But after the first big freeze-thaw cycle, we started seeing those telltale splits and some curling at the edges.
Turns out, our attic vents were half-blocked by old insulation, and there were gaps around the bathroom fan duct that let warm air sneak up. Once we cleared the vents and sealed up those spots, things improved a lot. I also added a layer of blown-in cellulose insulation, which wasn’t too expensive and made a noticeable difference in both winter and summer.
I’ve looked into synthetic underlayment too, and honestly, it seems like a solid investment if you’re already re-roofing. The upfront cost is a bit higher than felt, but it’s not outrageous, and it seems to hold up better when things get icy or wet. I haven’t tried metal roofing myself—just couldn’t justify the price with our budget—but I know a couple neighbors who went that route. They love the durability but complain about the noise during storms. One of them actually added some sound-deadening panels in the attic to help with that.
One thing I’d add: if you’re on a tight budget like me, sometimes just keeping up with regular maintenance—like checking for missing shingles after storms or making sure gutters are clear—can buy you a few extra years before you have to do anything major. Not glamorous, but it helps.
Anyway, I’m with you that there’s no single answer. It’s really about getting all the pieces working together, not just picking the “best” shingle or steepest roof. If I had to do it over again, I’d pay more attention to what’s happening under the roof than what’s on top.