I keep going back and forth on this. The roofer I talked to said I could just put a new layer over the old shingles, but I keep reading stories like yours and getting nervous about hidden issues. My place is only about 15 years old, but we get some wild wind here and I’ve noticed a couple of spots where the old shingles look curled up. Is it really that much harder or more expensive to do a full tear-off? Or is it mostly just the mess and time?
I’ve been wrestling with the same decision. My house is about the same age, and I’ve had a few shingles curl up after some nasty windstorms. From what I’ve gathered, a full tear-off does cost more—mostly labor and disposal fees—but it’s not just about the mess. If you’ve got curled shingles, there’s a chance the decking underneath isn’t in great shape, and you won’t know unless everything comes off. I get why adding a layer is tempting, but I keep wondering if it’s just kicking the can down the road. Anyone else notice their roof gets hotter with two layers? I’m in a pretty sunny spot, and I worry about that too.
- Had almost the same debate last year when my 25-year-old asphalt roof started losing shingles after every windstorm.
- Ended up going with a full tear-off. Pricey, yeah, but my decking had some soft spots and a bit of rot I never would’ve seen otherwise.
- The two-layer thing worried me for heat too. My neighbor did it, and his attic is noticeably warmer in summer—he says his AC runs way more now.
- Tear-off was messy, but the peace of mind’s been worth it so far. Plus, new warranty from the shingle manufacturer only kicked in with a full replacement.
- One thing I hadn’t thought about: insurance. My adjuster said if there’s ever hail damage, they’ll only pay for one layer to come off—so you eat the extra disposal cost if you have two.
Anyone else run into issues with local building codes? My town only allows two layers max, but I’ve heard some places are stricter.
My town only allows two layers max, but I’ve heard some places are stricter.
Yeah, codes can be all over the place. I’ve seen some towns in the Northeast that require full tear-off every time, no matter what—mostly because of snow load worries. Did your inspector check for ventilation too? That extra layer really does trap heat. Had a customer last summer who doubled up and ended up baking his attic insulation... not pretty.
- Good point about the heat.
I’ve seen that too—especially with darker shingles, the attic can get crazy hot.“That extra layer really does trap heat.”
- Tear-off is more work, but you get a chance to check for rot or mold underneath. Found a bunch of hidden damage on my neighbor’s place last year when they finally stripped it down.
- Curious if anyone’s tried cool roof shingles or reflective coatings to help with the heat issue? Wondering if that’d make a difference when you’ve got two layers.