Aluminum vs Galvanized Steel Drip Edge

Quick comparison

Corrosion Resistance

Aluminum does not rust. In coastal air, salt spray, and chronically wet eaves, that is the headline advantage. Watch dissimilar-metal contact (aluminum against copper or untreated steel can gall / galvanically corrode) — keep fasteners and adjacent metals compatible.

Galvanized steel relies on the zinc coating. It is tough until the coating is compromised. Cut edges, scratched hems, and decades of weathering expose bare steel that then rusts. Inland dry climates tolerate it longer; wet and coastal climates punish cut edges faster.

Stiffness and Abuse Resistance

Galvanized steel is generally stronger and stiffer for the same gauge. It holds a straighter line on long eaves, shrugs off casual ladder bumps better, and stays put in higher-wind abuse when fastening is correct.

Aluminum is lighter and easier to dent. In high-wind or high-traffic edge zones, crews sometimes prefer steel’s stiffness — provided corrosion risk is acceptable for the climate.

Cost

Market prices move, but galvanized stock is often the cheaper stick on commodity residential jobs. Painted / coated aluminum can land higher, especially in premium colors. Labor can erase a material-price gap if one metal cuts and forms faster on your crew.

Ease of Cutting and Forming On Site

Both cut with aviation snips; aluminum is usually friendlier on the hands and the tool. Steel dulls blades faster and fights tight hems. A hand seamer and quality snips (see the product cards on the calculator page) matter more than brand loyalty once you are on the roof.

Color and Finish Availability

Aluminum takes paint and anodizing well — easier to match fascia and gutter colors from a painted coil line. Mill-finish galvanized is the utilitarian look; painted steel is available but chip-outs at cut edges show rust sooner. If the homeowner cares about a clean color match at the eave, aluminum often wins the finish conversation.

When to Pick Which

• Favor aluminum: coastal / high-moisture climates, painted color match, lighter handling, corrosion-first priority.
• Favor galvanized steel: inland jobs where stiffness and abuse resistance matter more, budget-driven commodity installs, higher-wind edges when fastening is solid and cut-edge rust is acceptable risk.