Tearing off old shingles vs. layering new ones: which route did you take?

climbing466 · 2025-09-27T03:45:15Z

Trying to decide how to tackle this roof project that’s been looming over me—literally. My asphalt shingles are curling up and I know it’s time. I’ve read you can either strip everything down to the decking or just lay new shingles right over the old ones (as long as there’s only one layer). On one hand, tearing off sounds like way more work (and mess), but I’m worried about trapping problems under there if I just layer. On the other hand, layering seems faster and cheaper, but is it gonna bite me later with leaks or weight issues? If you’ve done either, how did it go? Did you regret not doing the full tear-off, or was layering totally fine? Any surprises or stuff you wish you’d known before starting?

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Asphalt Shingle Roofs

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adventure512

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Layering’s cheaper up front, but I’d rather not risk the extra weight or heat.

That’s a smart call, especially if you already had two layers on there. Extra weight can stress the structure over time, and heat retention is a real thing—removing old shingles lets the roof “breathe” better. I’ve seen folks surprised at how much cooler their upstairs gets after a full tear-off. It’s more work up front, but you probably saved yourself some headaches down the road.

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Tearing off old shingles vs. layering new ones: which route did you take?

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