Re-Roof (Overlay) vs Tear-Off: The 2026 Cost, Code, and Insurance Reality
Overlays are cheaper up front and worse in almost every other way. What code allows, what insurance covers, and when a tear-off is the only real option.
A re-roof (overlay) puts new shingles over the old ones. It's 20–30% cheaper than a tear-off — and disqualified in most modern situations.
When code allows an overlay
IRC allows up to two layers of asphalt shingles total. Many jurisdictions (FL, CA, most metros) have amended down to a single layer — no overlays.
Always confirm with your local building department before signing an overlay contract.
Why overlays fail early
The new layer traps heat, aging both layers faster. Expected life drops from ~25 years to ~15.
You can't inspect the deck. Rot goes undiscovered until the next tear-off — which is now more expensive because two layers come off.
Insurance implications
Most 2026 policies exclude coverage on the second layer, or pay it out at ACV only.
Overlays typically disqualify wind/hail discounts.
When a tear-off is required
Any storm claim with decking damage. Any moisture in the attic. Any roof past year 15. Any code amendment prohibiting a second layer.
Frequently Asked Questions
- Is an overlay ever a good idea?
- Rarely — a low-budget flip on a first-layer roof under 10 years old with no deck issues. Even then, most inspectors will call it out to a buyer.
- Does an overlay void the manufacturer warranty?
- Almost always. Manufacturers require installation over a clean, sound deck.
Deciding between repair and replacement?
Price both paths side-by-side, then use the insurance guide to know what your carrier should cover.