Galvalume vs. Aluminum Gutters
Both make good seamless gutters. Aluminum is lighter, won't rust, and comes in more colors. Galvalume steel is stiffer and stands up better to ladders, falling limbs, and ice. Here's how to choose.
By JonesCo Exterior Services · Updated October 1, 2026
The short version
| Galvalume steel | Aluminum | |
|---|---|---|
| Strength | Much stiffer, resists dents and sagging | Dents more easily from ladders, limbs, and hail |
| Corrosion | Resists rust well, but cut edges and deep scratches can rust over time | Does not rust |
| Weight | Heavier, needs solid fascia | Light and easy on older fascia |
| Color | Bare silver finish or a limited set of painted colors | The widest range of factory colors |
| Cost | Usually costs more per foot | Usually the most affordable seamless option |
What Galvalume actually is
Galvalume is sheet steel coated with an aluminum-zinc alloy (about 55% aluminum). The steel core gives it strength; the coating protects it from rust. It's the same family of material used on many standing-seam and exposed-fastener metal roofs, which is why it's common on farmhouses, barns, and mountain homes across East Tennessee.
Galvalume vs. galvanized steel
Galvanized steel is coated with zinc only. Galvalume's aluminum-zinc coating generally holds up longer in normal outdoor exposure, so when a homeowner asks for steel gutters today, Galvalume is usually the better pick of the two.
Where aluminum wins
Aluminum is the most common seamless gutter material for good reasons. It never rusts, it's light enough that it won't strain older fascia boards, and it comes in dozens of factory colors so the gutters disappear against your trim. For a typical brick or vinyl-sided home with a shingle roof, aluminum is usually the right answer.
Where Galvalume wins
Galvalume is the stronger material. It shrugs off ladder pressure, holds its shape under snow and ice, and resists denting from falling branches. It's a natural match for homes with Galvalume metal roofs, for long runs on barns and shops, and for wooded lots where limbs come down every storm.
Things that shorten a Galvalume gutter's life
Keep Galvalume away from copper and from runoff off copper flashing, and don't let it sit against wet pressure-treated lumber; both speed up corrosion. Clean out wet leaves and debris that hold moisture against the metal, and touch up deep scratches. With those basics covered, a steel gutter is a long-lasting system.
Size matters more than material
Whichever material you choose, the bigger performance question is size and layout. Large or steep roofs often need 6-inch gutters and more downspouts than the house came with. An undersized gutter overflows whether it's steel or aluminum.
Frequently asked questions
Do Galvalume gutters rust?
Galvalume resists rust well, but it is still steel underneath. Cut edges, deep scratches, and constant contact with wet debris, copper, or treated lumber can lead to rust over time. Aluminum gutters do not rust.
Are Galvalume gutters more expensive than aluminum?
Usually, yes. Steel gutters typically cost more per foot than aluminum. Your written estimate lists the price for each option so you can compare.
Should gutters match a Galvalume metal roof?
They don't have to, but many homeowners like the look of matching Galvalume gutters on a Galvalume roof. Painted aluminum in a matching color is also common.
Which lasts longer, Galvalume or aluminum gutters?
Both can last for decades when they're installed and maintained correctly. Galvalume holds up better to physical damage; aluminum holds up better against corrosion. Clogs and loose hangers end more gutters than material choice does.
Get your free written estimate
Tell us about the job. Photos of the roofline help us price it faster — most photo estimates come back the same day.