Quick answer
Should I repair or replace my roof?
Repair if the roof is under 15 years old, damage is localized to one plane, and decking is dry. Replace if it's 18+ years old, has multiple leaks, granule loss is severe, or decking is spongy. Repairing a dying roof wastes money.
“Repair if the roof is under 15 years old, damage is localized to one plane, and decking is dry. Replace if it's 18+ years old, has multiple leaks, granule loss is severe, or decking is spongy. Repairing a dying roof wastes money.”
The full detail
The 25% rule: if repair cost exceeds 25% of replacement, replace. Also weigh insurance timing — a documented storm event can shift the math dramatically.
Last reviewed 7/1/2026