I get the hesitation, but I’ve actually gone the overlay route twice now—once on my own house and once helping a neighbor. Both times, we had solid decking and no signs of leaks or rot, so it made sense financially. I do keep an eye on things during spring melt, though. If you’re in an older house or have questionable decking, full tear-off probably is safer in the long run, but sometimes those extra costs just aren’t doable upfront. I guess it’s always a bit of a gamble either way...
Overlay can definitely make sense if the decking’s solid and you’re not seeing any leaks or soft spots. I’ve seen it hold up fine for years, but I’m always a bit wary—sometimes those hidden issues don’t show until it’s too late. One thing I’d add: check the existing shingles for curling or a lot of granule loss. If they’re in rough shape, even a good overlay can end up looking wavy or wearing out faster. And yeah, the cost difference is real... just wish there was a way to know for sure what’s under there without ripping it all up.
- Overlay’s tempting for the wallet, but I always get a little nervous about what’s lurking underneath. Even if the decking feels solid, moisture can hide out and rot things from below.
- If you’re in a spot with wild temperature swings (I’m up north—freeze/thaw is brutal), overlays seem to age faster. The old shingles act like a weird cushion and sometimes trap heat or moisture.
- Granule loss is a big one. If you’re seeing a lot of bald patches, an overlay won’t magically fix that. You’ll just have two layers of sad shingles instead of one.
- One thing I wish more people talked about: overlays add weight. Most roofs can handle it, but if your house is older or the framing’s questionable, it’s worth double-checking.
- I get the cost thing, though. Full tear-offs are pricey and messy. But you do get to peek at the decking, swap out bad boards, and maybe even upgrade your underlayment (hello, ice & water shield).
- Funny enough, my neighbor did an overlay to save cash, and three years later had to rip it all off anyway because of hidden rot. Sometimes you win, sometimes you just get more shingles in the landfill...
If you’re planning to stay in the house a while, I lean toward tear-off. Short-term? Overlay might be fine if the base is solid. Just depends how much of a gambler you are, I guess.
I get the hesitation with overlays, but I’ve actually had decent luck with them on a garage roof. The key was making sure the first layer was still in good shape—no soft spots or major curling. Not every roof is a candidate, but sometimes the horror stories are from folks skipping that step. If you’re not seeing leaks or sagging, and you just need a few more years, overlay can buy you time without breaking the bank. Just wouldn’t do it twice on the same roof, personally.
The key was making sure the first layer was still in good shape—no soft spots or major curling.
That’s spot on. I’ve seen overlays go sideways fast when folks ignore the base layer. If you’re in a spot with heavy storms or big temp swings, even a small hidden issue can turn into a leak after an overlay. I get why people do it for cost, but if there’s any doubt about the decking or you’ve had past storm damage, tear-off is safer long term. I’ve patched too many “budget” overlays that didn’t hold up through one bad hail season. Sometimes saving money up front just means more headaches later.