Which is cheaper for a small shed roof?

The Gibraltar sheet at $28.00 covers 28.7 sq ft, so a small shed may need two or three panels. The 20-pack at $132.99 covers over 100 sq ft, which is more than most small sheds need.

Both are galvanized steel, which resists rust and rot. The Gibraltar panel states 29-gauge thickness and a non-combustible rating; the 20-pack does not state its gauge, so its durability is harder to judge.

Do I need extra screws and closures?

The 20-pack includes screws and has pre-drilled holes. The Gibraltar panel needs screws and closure strips bought separately; the store lists foam and wood closure strips as accessories.

Can I paint the Gibraltar panel?

Yes. It ships in unpainted mill finish and the maker says it is paintable. The 20-pack comes pre-finished in brown RAL8008.

Is the 20-pack worth the extra money?

Only if you need over 100 sq ft. Per square foot it costs more than the Gibraltar sheet, so for small jobs the single panel is the better value.

Can I use either one on walls?

Yes. The Gibraltar page lists roofs or walls, and the 20-pack is marketed for roofing or siding on sheds, barns and carports.

Gibraltar Building Products Gibraltar Corrugated Metal Roof Panel vs 20-Pack Galvanized Corrugated Metal Roof Panels, Waterproof Rustproof Roofing Sheets

Buy the Gibraltar panel if you want a standard 6 ft galvanized corrugated sheet you can cut with tin snips and paint yourself. Buy the 20-pack if you need to cover 100+ sq ft of a shed or barn in one order and want pre-drilled holes and screws included. On latest prices, the Gibraltar sheet is $28.00 at Valley Outdoor Supply as of November 6, 2026, and the 20-pack is $132.99 at Wayfair as of November 6, 2026.

Today the Gibraltar Building Products Gibraltar Corrugated Metal Roof Panel costs $104.99 less at its best price.

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