Onward
Quick answer: A corrugated metal roof is the most affordable metal option: wavy or ribbed steel panels screwed straight to the deck through the face. It costs about $5-$12 per square foot installed ($10,000-$24,000 for a 2,000 sq ft roof), lasts 25-40 years, and carries a Class A fire rating, but the exposed screws need re-torquing every 15-20 years.
What a corrugated metal roof actually is
A corrugated metal roof is an exposed-fastener metal panel system. The panels are rolled into a repeating wavy or ribbed profile for stiffness, laid across the roof, and screwed down through the face of the metal into the deck or purlins below. A rubber washer under each screw head seals the hole. That is the whole idea: simple, fast, and cheap.
This is the original metal roof, the kind you picture on a barn or a farm shed. The corrugation is what makes thin sheet metal rigid enough to span between supports. Without those waves, a flat sheet would flex and buckle; with them, a 29-gauge panel can carry its own weight and shed water across a wide span.
The defining feature, for better and worse, is the exposed screw. Because the fasteners go straight through the panel face, every one is both what holds the roof down and a potential leak point. Sheffield Metals notes that those neoprene washers bake in the sun and typically fail in 15-20 years, which is the single biggest difference between corrugated and the concealed-fastener standing seam that hides every screw under its raised seams.
Panels are usually steel coated with Galvalume (a zinc-aluminum alloy) for corrosion resistance, often with a baked paint finish on top for color and extra protection. Aluminum corrugated exists too and suits coastal, salt-air settings. Either way, the metal itself can outlast the building. It is the fasteners and washers, not the panels, that set the real-world lifespan.
Panel profiles and gauges
Corrugated is a family, not a single product, and the profile and gauge you choose change how it looks, how long it lasts, and what it costs.
Profiles. The classic look is the rounded 7/8 inch corrugated wave. Manufacturers like McElroy Metal offer ten or more exposed-fastener profiles, and a few names come up constantly:
- 7/8” corrugated — the traditional rounded, wavy sheet. The most recognizable agricultural and farmhouse look.
- R-panel / PBR panel — a flatter face with tall, boxy ribs. Common on commercial and ag buildings; more structural rib than classic corrugated.
- Western Rib / 7.2 panel — a tighter ribbed pattern often used for both roof and wall.
They all install the same way with exposed screws, so the choice is mostly about appearance and how much structural rib you want.
Gauge. Corrugated comes in 29, 26, and 24 gauge, where a lower number means thicker, stronger metal. Per Metal America, 29 gauge is the light, cheap option fine for sheds and outbuildings; 26 gauge is the recommended baseline for anything in active use or meant to last beyond 20-25 years; 24 gauge is the heaviest residential choice. Thicker gauge resists denting and oil-canning, the visible waviness that lighter panels can show.
[VISUAL: side-by-side cross-sections of 7/8” corrugated, R-panel/PBR, and Western Rib profiles, with a gauge thickness comparison]
Corrugated metal roof cost in 2026
Corrugated is the cheapest metal roof you can buy. In 2026, it runs about $5-$12 per square foot installed, according to HomeGuide and Angi. For a typical 2,000 sq ft roof, that works out to roughly $10,000-$24,000 installed. The same roof in standing seam would cost $20,000-$36,000, so corrugated often lands at half the price.
| Cost factor | 2026 range | Notes |
|---|---|---|
| Materials (panels, screws, trim) | $1-$5 / sq ft | 29 gauge cheapest; 24 gauge most |
| Labor | $4-$7 / sq ft | Fast install keeps this low |
| Corrugated, installed | $5-$12 / sq ft | Cheapest metal profile |
| Old-roof tear-off | +$1-$5 / sq ft | Skipped on some recover jobs |
| 2,000 sq ft roof, total | $10,000-$24,000 | Steel, installed |
What moves your number most: gauge (29 vs 24), the coating (basic acrylic vs Kynar 500 PVDF), whether you tear off or recover, and roof complexity. A simple gable barn roof is the cheapest thing to panel; a cut-up house roof with valleys, dormers, and penetrations costs more per square foot because each one needs flashing and careful sealing.
Onward can match you with vetted local pros who quote corrugated, so you can compare real numbers on your exact roof instead of a national average. See our broader roofing cost guide and how we build those ranges in our costing methodology.
Lifespan, durability, and storm performance
A corrugated metal roof lasts about 25-40 years, with the panels often outliving that and the fasteners setting the practical limit. That still beats asphalt, which our roof lifespan by material data puts at 15-30 years, and you can find the full picture in how long does a roof last.
The metal itself performs well in storms:
- Wind. Properly fastened corrugated can hold up to roughly 120-140 mph, depending on the panel, screw pattern, and decking. Correct screw spacing is everything here.
- Fire. Metal is non-combustible, and corrugated carries a Class A fire rating over a non-combustible deck, per Western States Metal Roofing, making it a sound choice in wildfire-prone areas.
- Hail. Metal shrugs off most hail, though thinner 29-gauge panels can dent. Dents are usually cosmetic, not leaks.
The catch is the fasteners. Those exposed screws and their rubber washers are the part that ages first. They expand and contract with every hot-cold cycle, and after 15-20 years the washers harden, crack, or pull loose. That is why corrugated needs maintenance that standing seam does not, and why install quality matters so much.
Maintenance: the exposed-screw reality
Here is the honest trade-off with corrugated: you save money up front, but you take on a maintenance job that concealed-fastener roofs do not have.
The screws are the whole story. At install, each one must be torqued just right. Drive it too loose and the washer never seals; drive it too tight and the washer crushes, cracks, and erodes. Either way you get a leak. Done correctly, the washer compresses evenly against the panel and forms a watertight gasket around the hole.
Over time, even perfect screws age. The practical maintenance plan looks like this:
- Annually: a quick visual check. Scan for backed-out screws, loose trim, and any washer that looks split or dished.
- Every 15-20 years: a full fastener inspection and re-torque. Many owners do a complete screw-out at the 20-year mark, replacing every fastener with a slightly oversized one and a fresh washer to reset the roof’s water-tightness.
- Ongoing: keep gutters and valleys clear, touch up scratched coatings before they rust, and reseal at penetrations like pipe boots and chimneys.
None of this is hard, but it is real, recurring work. Skip it and the leaks that show up at year 18 are not the panels failing, they are the washers. Budget for it, and corrugated comfortably reaches the top of its 25-40 year range.
What corrugated metal roofing is best for
Corrugated earns its keep where low cost, fast install, and a rugged look all line up. It is the value pick in the metal family.
- Barns, sheds, garages, and workshops. The original and still ideal use. Cheap, tough, fire-rated, and the industrial look is a feature, not a flaw.
- Cabins and agricultural buildings. Light enough for simple framing, fast to install, and easy to repair a single panel if a tree limb hits.
- Budget and modern-farmhouse homes. With at least 26-gauge steel, a quality coating, and solid decking, corrugated gives a house metal’s longevity and Class A fire rating at the lowest entry price, and the ribbed look is squarely on-trend for farmhouse and modern-rustic builds.
Where it is the wrong call: high-end homes that want a refined roofline, low-slope sections where water sits, and any owner who wants a roof they never have to think about. For those, standing seam or another concealed-fastener system is worth the premium. If you are weighing metal against asphalt more broadly, our metal roof vs shingles comparison lays out the full trade-off, and how much does a roof cost covers pricing across materials.
How corrugated compares to standing seam
Corrugated and standing seam are the two ends of the metal-roofing spectrum, and the difference is the fastener.
| Corrugated | Standing seam | |
|---|---|---|
| Fasteners | Exposed screws through the face | Concealed under raised seams |
| Cost (installed) | $5-$12 / sq ft | $10-$18 / sq ft |
| Lifespan | 25-40 years | 40-70 years |
| Maintenance | Re-torque screws every 15-20 yrs | Near maintenance-free |
| Look | Industrial, agricultural | Sleek, modern, vertical lines |
| Best for | Barns, sheds, budget homes | High-end homes, solar, coastal |
The short version: corrugated is cheaper, faster to install, and easy to repair one panel at a time, but its exposed screws age out and the look is rustic. Standing seam costs more and needs a specialist, but it hides every fastener, lasts longer, and clamps solar without holes. For a barn or a budget farmhouse, corrugated wins on value; for a forever home, standing seam usually justifies the premium. Our full standing seam vs corrugated breakdown weighs it in detail.
Corrugated is part of the broader metal roofing family, and Onward only matches you with crews who have actually installed it, screened under the Onward Shield so you can compare real local pros before you sign.
The bottom line
Corrugated metal is the value play in metal roofing. It costs about $10,000-$24,000 on a 2,000 sq ft home, roughly half the price of standing seam, installs fast, and gives you metal’s 25-40 year lifespan and Class A fire rating at the lowest entry point. The catch is the exposed screws: their washers age out in 15-20 years, so you sign up for periodic re-torquing and resealing to keep the roof dry. For barns, sheds, cabins, and budget or farmhouse-style homes, that trade is an easy yes.
If you want real 2026 pricing on your exact roof, get a free estimate and Onward will match you with vetted local pros who quote corrugated metal.
