I hear you—I've seen way too many surprises once the shingles come off. Folks think they're saving a buck, but if there's hidden rot or mold, that second layer just traps it in. Personally, I'd rather bite the bullet and know what's under there. Peace of mind's worth a lot, especially with roofs.
Yeah, I’ve run into that a lot—once you peel everything back, you really see what’s going on. Double-layering might look like a shortcut, but it can hide all sorts of issues: soft decking, old leaks, even nails that never sealed right. Plus, adding weight isn’t great for older rafters. Sometimes folks are surprised how much more it costs to fix things later because the problems were just covered up. Full tear-off’s not always fun, but at least you know what you’re working with.
Double-layering might look like a shortcut, but it can hide all sorts of issues: soft decking, old leaks, even nails that never sealed right.
Couldn’t agree more. When we bought our place, the inspector found two layers and a bunch of hidden rot underneath. We thought we were saving money by not tearing off, but ended up paying way more to fix the decking later. I get why people want to avoid the mess and cost upfront, but honestly, peace of mind knowing what’s under there is worth it. Plus, in our area (lots of snow), that extra weight just isn’t worth the risk.
I’ve seen this play out a bunch of times after storms roll through—folks think adding a new layer is a quick fix, but it’s almost always a gamble. Had a neighbor who went that route after a hailstorm. Looked fine from the street, but a year later, we had a heavy rain and water started dripping through his ceiling. Turns out, the old decking was soft in spots and the second layer just hid it. He ended up tearing off both layers and replacing a bunch of rotten wood. Cost him way more than if he’d just done the full tear-off to begin with.
I get why people want to avoid the mess and extra cost, especially if the first layer looks okay. But if you’re in a spot with heavy snow or wind, that extra weight and the risk of missing hidden damage just isn’t worth it. Plus, insurance can get tricky if you’ve got multiple layers—some policies won’t cover issues if they think you cut corners. For me, peace of mind and knowing the roof’s solid beats saving a few bucks upfront.
I’ve seen that too—covering up the old roof seems easier, but it’s risky.
That’s exactly what happened at my uncle’s place. Looked fine for a year, then he noticed sagging and leaks. Once they tore both layers off, half the plywood was black with rot. He said if he’d known, he would’ve paid for the full tear-off right away. I get wanting to save money, but hiding problems just makes ‘em worse.“the old decking was soft in spots and the second layer just hid it”