“Seen those ‘impact-rated’ shingles hold up to hail, but leaks still happen if flashing or boots are skipped or reused—happens all the time around here.”
That’s spot on. I’ve watched folks spend big on “hail-proof” shingles, only to get water in the attic because someone reused an old boot or skimped on ice & water shield. I’m curious—has anyone tried pairing impact shingles with recycled rubber underlayment? I keep hearing it’s more forgiving with weird rooflines and might help with leaks, but haven’t seen it in action yet. Wondering if that combo actually makes a difference for older homes or if it’s just marketing.
“I’m curious—has anyone tried pairing impact shingles with recycled rubber underlayment? I keep hearing it’s more forgiving with weird rooflines and might help with leaks, but haven’t seen it in action yet.”
That’s a fair question. I’ve looked into the recycled rubber underlayment too, mostly because my house is from the 60s and the rooflines are anything but simple. The sales pitch sounds great—supposedly more flexible, better at sealing around nails, and less likely to tear than the old felt stuff. But honestly, I haven’t seen much real-world feedback either. My neighbor tried it last year under standard architectural shingles, not impact-rated, and he said installation was smoother, especially around valleys and dormers. No leaks so far, but it’s only been through one storm season.
I do think you’re right about the weak spots being things like flashing and boots, not just the shingles themselves. Spending a fortune on “hail-proof” materials doesn’t matter much if the little details get skipped or reused. I’m still on the fence about whether the rubber underlayment is worth the higher cost, especially if you’re already paying for impact shingles. But if your roof has a lot of odd angles or you’re worried about ice dams, maybe it’s worth considering. Hard to separate marketing from reality with all this new stuff.
I’ve actually been eyeing the recycled rubber underlayment for a while, mostly because I’m trying to avoid more landfill waste with my next roof. The flexibility is a big plus, especially if your roofline is weird or you’ve got a bunch of valleys. I haven’t paired it with impact shingles yet, but I did see a local install where they used both. The roofer said it was easier to get a tight seal around vents and skylights, which makes sense since rubber just kind of molds to whatever’s there.
One thing I’m not totally sold on is the long-term durability—like, will it break down faster in hot climates? Some folks say it holds up better than felt, others aren’t convinced. Price is definitely higher, but if you’re already investing in impact shingles for hail, maybe the extra layer of protection is worth it. Just wish there were more independent reviews out there... Marketing always makes everything sound perfect.
If you’re worried about leaks at odd angles or ice dams, I’d lean toward giving it a shot. At least you’re not stuck with the old tar paper that tears if you look at it wrong.
I’ve inspected a few roofs where they used recycled rubber underlayment with impact shingles, and honestly, it’s a mixed bag. One house in particular had a ton of valleys and odd angles—rubber definitely made sealing around those spots easier, just like you mentioned. But after a couple of brutal summers, I started noticing some curling at the edges where the underlayment was exposed. Not catastrophic, but it made me wonder about UV resistance over time. Still, compared to old felt, it’s way less prone to tearing or shifting. I’d just keep an eye on how it handles prolonged heat, especially if you’re in the south.
But after a couple of brutal summers, I started noticing some curling at the edges where the underlayment was exposed. Not catastrophic, but it made me wonder about UV resistance over time.
That’s interesting about the curling—never thought much about UV on the underlayment itself. I’ve got impact shingles with standard felt, and while it’s not as tough, at least I don’t see that edge curling. Still, the rubber sounds better for weird roof shapes. Just not sure it’s worth the extra cost if it might break down in southern heat.