Aluminum gutters cost roughly $6 to $13 per linear foot installed and last about 20 to 30 years, while steel gutters run about $9 to $20 per linear foot installed and last anywhere from 20 years for galvanized to 50-plus years for galvalume or stainless. Steel wins on strength and dent resistance. Aluminum wins on price, rust resistance, and easy seamless installation. The deciding factors for most homes are climate, budget, whether you want seamless runs, and which type of steel you are actually being quoted, because galvanized, galvalume, and stainless behave very differently.
Steel vs aluminum gutters: side-by-side comparison
The table below compares the two materials on the factors that move a buying decision. Figures reflect 2026 U.S. pricing for standard 5-inch and 6-inch K-style profiles and vary by region, gauge, and whether the run is seamless or sectional.
| Factor | Aluminum gutters | Steel gutters |
|---|---|---|
| Installed cost (per linear foot) | $6 to $13 | $9 to $20 |
| Typical lifespan | 20 to 30 years | 20 to 30 (galvanized); 30 to 50-plus (galvalume, stainless) |
| Base material | Coated aluminum coil | Zinc-coated (galvanized), aluminum-zinc (galvalume), or stainless steel |
| Standard thickness | 0.027 in to 0.032 in | 26 gauge to 24 gauge (about 0.019 in to 0.024 in) |
| Weight | Light (roughly one-third of steel) | Heavy, needs more hangers |
| Dent and impact resistance | Lower, dents from ladders, hail, ice | High, resists dents and ladder loads |
| Rust resistance | Does not rust, forms protective oxide | Rusts once the zinc or coating wears through |
| Thermal movement | Expands about twice as much as steel | Low expansion, stable across temperature swings |
| Seamless availability | Widely available, run on site | Limited, heavier coil is harder to form on site |
| Maintenance | Cleaning, occasional repaint | Cleaning plus rust touch-up as the coating ages |
| Best for | Most homes, mild to moderate climates, budget builds | Heavy snow and ice, hail country, long runs, high-abuse spots |
What are aluminum gutters?
Aluminum gutters are lightweight troughs roll-formed from coated aluminum coil, most often 0.027-inch or heavier 0.032-inch stock. They are the most installed residential gutter in the United States because they are inexpensive, will not rust, come in dozens of baked-on colors, and can be run seamless from a truck-mounted machine. Aluminum forms a thin oxide layer that protects the metal, so it holds up in coastal and humid climates where bare steel would corrode. The trade-offs are a softer body that dents and a higher rate of thermal expansion that can stress long runs and seams.
What are steel gutters?
Steel gutters are troughs formed from coated sheet steel, and the coating is what decides how long they last. All steel is stronger and more dent-resistant than aluminum, but “steel” on a quote can mean three very different products, so the type matters more than the label.
- Galvanized steel is carbon steel with a zinc coating. It is the cheapest steel option and commonly lasts about 20 to 30 years, but once the zinc wears through at cut edges or scratches, the base steel rusts.
- Galvalume steel is coated with an aluminum-zinc alloy that resists corrosion far better than plain zinc, often cited at roughly two to four times the coating life of galvanized. Galvalume gutters can push past 30 to 50 years in many climates.
- Stainless steel is the premium, corrosion-resistant option that can last 50-plus years with little maintenance, but it is expensive and uncommon on residential jobs.
Steel is heavier than aluminum, roughly three times the weight for a comparable profile, so a steel system needs more hangers and stronger fascia support.
How much do steel and aluminum gutters cost?
Aluminum is the budget pick and steel is the premium pick, with steel typically costing 30% to 100% more installed. Aluminum runs about $6 to $13 per linear foot installed, while steel runs about $9 to $20 per linear foot depending on the coating, gauge, and the extra labor the added weight requires.
On a typical 150 to 200 linear foot house, that puts a full aluminum system near $900 to $2,600 and a steel system near $1,350 to $4,000 installed. Galvalume and stainless sit at the top of that range. For a full breakdown by gauge and profile, see our aluminum gutters cost guide and the average cost of gutters by home size.
Cost per year of service
Upfront price hides the real gap. Dividing installed cost by expected lifespan gives a rough annual figure. This is a Roofing Brief calculation using the ranges above, not a quoted price.
- Aluminum: about $9 per linear foot installed over 25 years is roughly $0.36 per foot per year.
- Galvanized steel: about $12 per linear foot installed over 25 years is roughly $0.48 per foot per year.
- Galvalume steel: about $15 per linear foot installed over 40 years is roughly $0.38 per foot per year.
On a cost-per-year basis, aluminum and galvalume steel come out close, while galvanized steel is often the weakest value because its shorter coating life rarely justifies the higher upfront price. The math flips toward steel only where its strength prevents damage aluminum could not survive.
Which lasts longer and holds up better?
It depends on the type of steel. Galvalume and stainless steel outlast aluminum, while galvanized steel and aluminum are roughly even at 20 to 30 years. Aluminum wins on corrosion because it does not rust, but steel wins on physical toughness because it resists the dents, ladder loads, and ice-dam pressure that deform aluminum.
The failure modes differ. Aluminum rarely rusts but can corrode slightly at cut edges, dents easily, and can crack or pull at seams after years of thermal cycling. Steel does not dent, but galvanized steel rusts once the zinc is breached, and any steel gutter is heavier on its hangers over time. In hail country, heavy-snow regions, or spots where ladders and equipment constantly bump the gutter, steel’s strength is the deciding advantage. In coastal or salt-air climates, aluminum’s rust immunity often matters more.
The thermal expansion difference most guides skip
Aluminum expands and contracts about twice as much as steel for the same temperature change, and that single fact drives several long-run problems competitors rarely mention. Aluminum has a coefficient of thermal expansion near 13 millionths per degree Fahrenheit, while steel sits near 6.5, so a long aluminum run moves noticeably more between a freezing night and a hot afternoon.
Two practical consequences follow. First, long aluminum runs are more prone to seam stress, sealant fatigue, and visible “oil canning” or waviness, which is one reason seamless aluminum is preferred, since fewer joints mean fewer places for expansion to open a leak. Second, steel’s lower movement makes it more stable across wide temperature swings and freeze-thaw cycles, which is part of why it performs well in extreme climates. Neither metal is disqualified, but expansion gaps and proper hanger spacing matter more with aluminum on long, straight elevations.
Installation differences that affect cost and longevity
Installation is where these two diverge most. Aluminum is light enough to be run seamless on site from a portable machine, so a long run has few joints. Steel is heavier and harder to form, so it is more often installed in sections with sealed or riveted joints, and it needs more support.
- Confirm the coating on any steel quote. Ask whether it is galvanized, galvalume, or stainless, because the lifespan and price swing widely between them.
- Choose seamless or sectional. Aluminum extrudes seamless on site, which cuts leak points. See how that works in our seamless gutter systems guide. Seamless steel is available but less common.
- Match hangers and spacing to the weight. Steel needs more hangers and solid fascia; verify the fascia can carry the extra load before choosing steel.
- Confirm the profile and size. Both metals run in 5-inch and 6-inch K-style. Compare shapes and capacities in our gutter dimensions spec sheet.
The mixed-metal problem to watch
Dissimilar metals in contact can set up galvanic corrosion that eats the less-noble metal, so the gutter material should be considered alongside the roof and fasteners it will touch. Aluminum and bare or galvanized steel in direct contact, especially with water present, can corrode faster than either would alone.
Two rules keep this in check. First, match fasteners and hangers to the gutter metal where possible, and avoid pairing bare steel components with aluminum ones. Second, watch runoff paths: water shedding off a copper roof onto aluminum or steel gutters can accelerate corrosion, so a copper or dissimilar-metal roof may push the decision one way or the other. When metals must meet, isolate them with a non-conductive barrier. Homeowners weighing a copper accent should also read our copper vs aluminum gutters comparison before mixing metals.
Which gutter should you choose?
Use this decision framework rather than a single winner, since the right answer depends on climate, budget, and how much abuse the gutters will take.
- Choose aluminum if you want the lowest practical cost, a seamless run, a specific paint color, rust immunity in a humid or coastal climate, or you are outfitting a rental or a home you may sell within a decade.
- Choose galvalume or stainless steel if you live in hail country or heavy-snow and ice-dam regions, have long runs or high-abuse areas where dent resistance pays off, and you want a service life that can beat aluminum.
- Be cautious with galvanized steel because it costs more than aluminum but often does not last longer, so it makes sense mainly where you specifically want steel’s strength at the lowest steel price and can accept eventual rust.
- Weigh the structure. Steel’s weight demands solid fascia and more hangers, so confirm the support before committing to a heavier system.
If neither material fits the budget or the roof, other options exist. Compare shapes first in our guide to gutter profiles before committing to a material.
Reviewed by The Roofing Brief Team. Last reviewed July 2026.