Is sealing roof flashing better than replacing when selling?
Verdict: DEPENDS — Sealant is a 1–3 year fix at best. Replace flashing if more than 10 years old. Different math when you're listing in <12 months. ROI at resale is what matters, not lifetime savings.
Cost & payback at a glance
| Typical cost range | $50–$1,500 |
|---|---|
| Estimated annual benefit | Non-financial (comfort / safety / resale) |
| System | roof |
| Scenario | resale |
How HomeScore decides
HomeScore evaluates "is it worth it?" decisions across 40+ home systems using 2026 cost data, regional installer rates, lifespan modeling, and resale ROI. Every verdict on this page is anchored to the underlying replacement cost, annual operating savings, and the scenario you're in: general homeowner, in-2026 pricing, resale-driven, forever-home, or pre-1980 retrofit.