- Decking can be sneaky—looks fine from below, but I’ve seen plywood that crumbles as soon as you walk on it during a tear-off.
- If you’re in a spot with heavy snow or wild temp swings, that extra layer can really stress old wood.
- I get the appeal of saving cash, but patching over hidden rot is like putting a band-aid on a leaky pipe...works until it doesn’t.
- Sometimes, if the first layer’s in great shape and the decking’s solid (and local code allows), a second layer isn’t the end of the world. But I’d want to check a few spots up close before rolling those dice.
Had a place a few years back where we tried the “just add a layer” route. Looked fine from the attic and even the roofer gave it a thumbs up. Fast forward two winters—heavy snow, ice dams, and suddenly we’ve got water stains creeping down the wall. Pulled off a section to patch and, sure enough, the decking was soft as a sponge in spots. Ended up having to tear off both layers and replace a chunk of plywood anyway.
Honestly, I get why folks want to save on labor and dump fees, but I’ve learned it’s a gamble—especially if you’re managing older buildings or anything with questionable ventilation. Sometimes the extra upfront cost of a full tear-off saves you a headache (and cash) down the line. That said, I’ve seen decent roofs last a while with two layers, but they were in milder climates, not places that get hammered by freeze-thaw cycles. Just depends how much you like surprises behind your drywall...
Had a similar situation on a 70s duplex—previous owner just slapped a second layer on, and it looked fine for a while. First real winter, though, we started seeing bubbling paint and that telltale musty smell. Pulled everything off and found rotted decking and even some mold. I get the appeal of saving money upfront, but in my experience, especially with older structures, you’re just kicking the can down the road. Full tear-off is a pain, but at least you know what you’re dealing with underneath.
That’s exactly what I’m worried about—my place is early 80s, and the roof’s already got one layer. I keep hearing mixed things about adding another versus tearing it all off. The cost difference is huge, but stories like yours make me nervous. Did insurance give you any trouble with the mold or rot? I’m trying to figure out if saving now is worth the risk later, especially since I’m not planning to move anytime soon.
I keep hearing mixed things about adding another versus tearing it all off. The cost difference is huge, but stories like yours make me nervous.
- Totally get what you mean—my place is late 70s and I’m in the same boat.
- I looked into the “second layer” thing because of the price, but a few roofers warned me it can hide problems underneath (like leaks or soft spots).
- Insurance guy said if there’s mold or rot under both layers, they might not cover it since it’s considered neglect? That kinda freaked me out.
- My neighbor did the second layer to save cash, but when he had a leak last winter, the repair was way pricier since they had to rip off both layers just to find the problem.
- If you’re staying put for a while, I lean toward full tear-off even though it hurts the wallet up front. At least then you know what’s going on under there.
- One thing I didn’t expect: new roof meant better insulation for me, so my heating bill dropped a bit.
It’s a tough call, but for me, peace of mind won out over the short-term savings.