How long do gutters last?
Four materials, four different clocks — and the warranty paper under them is not what most people assume. Only one of the four carries a published term at all, and that term covers the finish rather than the gutter. The other three have no consumer warranty, for three specific and quite different reasons. Every number below is tied to the document it came from, with the tier of that document showing.
Updated
Every material on one 120-year axis
Soft band: typical service-life range. Solid bar: the published warranty term. The difference between their right-hand ends is the story.
The numbers, with their sources
| Material | Service life | Warranty term | Source tier |
|---|---|---|---|
| Aluminum gutters | 20+ yrs | 20-year limited, prorated, non-transferable, conditional | Tier 3 · baseline chart (undated) |
| Vinyl gutters | 25+ yrs | — | Tier 3 · baseline chart (undated) |
| Steel gutters (galvanized) | 16–20 yrs | — | Tier 2 · trade / standards literature |
| Copper gutters | 50+ yrs | — | Tier 3 · baseline chart (undated) |
Two things read straight off the grid. First, only aluminum has a warranty bar: a 20-year finish term that pays in full for one year, falls to about a third of the cost by year ten, sits at a flat 10% from year fifteen, and ends when the house changes hands. Vinyl's published warranty is measured at the checkout counter, copper is sold as bare sheet by weight, and steel gutter carries no service term because the rainware paper in this trade is written for aluminum. Second, the metal is almost never what fails. Seams, sealant, hangers and coatings are what end a gutter — which is why the copper line, half a century or more on a metal that gives out at its solder joints, is really a statement about workmanship.