Had the same debate with myself about ten years ago when we bought our place. The roof was pushing 18 years, and the inspector said the decking seemed “okay,” but nothing more. Ended up going with an overlay because money was tight and the roofer swore up and down it’d be fine for another 15 years.
Fast forward to now—some spots are holding up all right, but I’m starting to see a few soft patches where water must’ve snuck in. My guess is, if your decking’s already iffy, an overlay just hides problems for a while. In hindsight, I wish I’d bit the bullet and done a full tear-off. It probably would’ve cost more upfront, but I wouldn’t be worrying about what’s lurking under there every time it rains.
I get why folks do overlays though, especially if you’re not planning on staying long-term or you’re in a milder climate. But long-term peace of mind? For me, full removal wins out. Just my two cents from living with both options...
That’s a familiar story. I’ve seen a lot of folks go with overlays to save on costs, especially after a storm when budgets are tight. In my own case, I did an overlay on a rental property about eight years back—seemed fine at first, but once we had a heavy hail season, the underlying decking issues got worse fast. Ended up with leaks and some mold in the attic. If the decking’s questionable, I lean toward full tear-off now. It’s more upfront, but you get to see exactly what you’re working with underneath. Peace of mind goes a long way when the weather turns rough.
- Gotta say, I’ve seen both sides of this. Overlay can look like a bargain, but it’s a gamble if the decking’s iffy.
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That’s the nightmare scenario right there... Mold’s no joke.“Ended up with leaks and some mold in the attic.”
- Full tear-off costs more, but you get a clean slate—no guessing what’s hiding under old shingles.
- On the flip side, if your roof structure’s solid and you’re not planning to stay long, overlay might buy you a few years.
- Personally, I’d rather deal with a noisy tear-off than surprise leaks mid-storm. But hey, every roof has its story.
“Overlay can look like a bargain, but it’s a gamble if the decking’s iffy.”
I get the concern, but not everyone’s got the budget for a full tear-off. I did an overlay on my last house—checked the decking first, no soft spots, and it held up fine for six years until I sold. Sometimes you just need a stopgap that doesn’t wreck your wallet. Mold is scary, but if you do your homework and the roof’s solid, overlay isn’t always a disaster waiting to happen.
- Agree with this:
“Sometimes you just need a stopgap that doesn’t wreck your wallet.”
- I’ve managed a few properties where overlays made sense—tight budgets, no major leaks, decking checked out.
- Key is making sure there’s no hidden rot or moisture. Once had a crew miss a soft spot and it turned into a bigger headache later.
- Overlay can buy you time, but resale value sometimes takes a hit if buyers see two layers.
- In colder climates, ice dams can be worse with overlays since heat escapes more easily. Just something to keep in mind.