Corrugated metal panels are roll-formed steel or aluminum sheets pressed into a repeating wavy profile, used for roofing, siding, fencing, and interior accent walls. The corrugation is what does the work: bending a flat sheet into ridges and valleys raises its stiffness and strength-to-weight ratio, so a thin panel spans framing without sagging. This guide covers the profiles, materials, gauges, sizes, and 2026 pricing, then shows how the right panel changes by job.
For the roof-specific version of this decision, see our guides to corrugated metal roofing (the installed roof system) and corrugated roof panels (roof panel sizing and cost). This page is the cross-application view: the same panel used on a wall, a fence, or a ceiling, and how the spec shifts each time.
What are corrugated metal panels?
Corrugated metal panels are metal sheets cold-formed into a continuous rounded wave, most often steel (galvanized or Galvalume) or aluminum. The rounded ridges add rigidity, letting a panel as thin as 0.0142 inches (29 gauge) carry wind, snow, and light foot traffic across purlins or framing. They install with exposed, gasketed screws and sit among the least expensive metal cladding products on the market.
The classic profile is the round wave people picture on a barn roof. It differs from angular, trapezoidal panels such as R-panel and PBR, which use flat-topped ribs rather than a continuous curve. Both are exposed-fastener panels, but corrugated specifically means the rounded, sinusoidal shape.
Corrugated metal panel profiles
Two rounded profiles dominate: 7/8 inch corrugated (also sold as 2.5 inch corrugated) and 1/2 inch corrugated. The number refers to rib depth. Deeper 7/8 inch panels are stiffer and handle roofs, walls, and fences, while the shallower 1/2 inch profile suits flat walls, equipment screens, and interior accent surfaces where load is minimal.
| Profile | Rib depth | Best for |
|---|---|---|
| 7/8″ corrugated (2.5″ corrugated) | 7/8 in | Roofs, exterior walls, fences |
| 1/2″ corrugated | 1/2 in | Flat walls, equipment screens, interior accents |
Corrugated vs R-panel and PBR
Corrugated panels use a rounded wave; R-panel and PBR use trapezoidal ribs with wide flat pans between them. Trapezoidal panels are stiffer per pound and common on commercial and metal-building roofs, while rounded corrugated reads as the traditional agricultural and residential look. If a supplier lists 5V crimp, that is a separate exposed-fastener profile with V-shaped ribs, not true corrugated.
What materials and gauges do corrugated metal panels come in?
Most corrugated metal panels are steel with a metallic coating, sold in three common gauges. Galvalume steel (a 55% aluminum, 45% zinc coating) is the current default for its corrosion and heat resistance. Galvanized steel (100% zinc) costs less and protects cut edges well. Aluminum is the lightest and best near salt water, though it dents more easily and costs more.
| Gauge | Approx. thickness | Typical use |
|---|---|---|
| 29 ga | 0.0142 in | Sheds, agriculture, interior, budget walls |
| 26 ga | 0.0179 in | Residential roofs and walls |
| 24 ga | 0.0239 in | Commercial, heavy snow, long spans |
A lower gauge number means thicker steel, and 24 gauge typically costs 25% to 40% more than 26 gauge. Panels ship either bare (mill-finish Galvalume) or painted. Paint tiers run from economy polyester up to silicone-modified polyester (SMP) and premium Kynar 500 PVDF, which holds color longest. For color and finish detail, see our guide to corrugated metal roof colors.
Corrugated metal panel sizes and coverage width
Corrugated panels typically come 26 to 39 inches wide and 6 to 12 feet long, and many suppliers cut custom lengths to the inch. The figure that matters for ordering is coverage width, not overall width: panels overlap one or more corrugations at the side lap, so a 36 inch sheet may only cover about 32 inches once installed.
Worked example: a wall 16 feet wide, using panels with 32 inches (2.67 feet) of coverage, needs 16 divided by 2.67, which rounds up to 6 panels, before adding waste for cuts around openings. Size by the coverage figure on the spec sheet, then add roughly 10% for waste on a cut-heavy job. For roof-panel quantity math, see corrugated roof panels.
What are corrugated metal panels used for?
Corrugated metal panels handle four main jobs: roofing, wall cladding and siding, fencing, and interior accent surfaces. The same rounded profile serves all four, but the ideal gauge, fastener, and finish change with the load and exposure. The table below is the quick decision matrix, and the roofing case carries the most demanding fastening and corrosion requirements.
| Application | Typical profile | Typical gauge | Fastener | What drives the choice |
|---|---|---|---|---|
| Roof | 7/8″ corrugated | 26 to 24 ga | Gasketed self-tapping screws, placed per maker’s spec | Corrosion resistance and coating |
| Wall / siding | 7/8″ or 1/2″ | 26 to 29 ga | Gasketed screws to framing | Color and finish |
| Fence | 7/8″ corrugated | 26 to 29 ga | Screws to posts and rails | Durability and budget |
| Interior accent | 1/2″ or 7/8″ | 29 ga | Trim screws or brad nails | Appearance only |
On a roof, panels carry wind uplift and shed water, so they use gasketed self-tapping screws placed per the manufacturer’s rib-or-flat instructions, and coating choice matters most. On walls and fences the load is lighter, so a 29 or 26 gauge panel is usually enough. Interior accent walls and ceilings carry no weather load, so a lighter 29 gauge galvanized or bare panel is common, and cost is driven by looks rather than durability.
Using roofing panels for siding
Yes, the same corrugated panel used on a roof can clad a wall, and doing so is common on barns, shops, and modern homes. On walls you can often drop to a lighter gauge because there is no snow load or foot traffic, and panels usually run vertically to drain. Fastening and trim differ from a roof, so follow the panel maker’s wall details rather than roof details.
How much do corrugated metal panels cost?
Corrugated metal panels run roughly $1 to $5 per square foot for material alone, or about $17 to $113 per sheet depending on size, metal, gauge, and finish. Installed as a roof, expect about $7 to $12 per square foot once labor and accessories are added. Bare galvanized in a light gauge sits at the bottom of the range, and painted 24 gauge Galvalume or aluminum sits at the top.
| Item | Typical 2026 price |
|---|---|
| 26 ga Galvalume, material | $1.50 to $2.00 / sq ft |
| 24 ga Galvalume, material | $2.50 to $3.00 / sq ft |
| Per sheet (varies by size and metal) | $17 to $113 |
| Installed on a roof (7/8″) | $7 to $12 / sq ft |
| Labor to install | $4 to $7 / sq ft |
Prices move with steel and aluminum commodity markets and vary by region and supplier. Metal remains a minority but growing share of US residential roofs, per The Roofing Brief’s roofing material market share report. Get a written per-panel and per-square-foot quote so you can compare like for like.
How to choose the right corrugated metal panel
Pick the panel by working from the job down to the finish. The application sets the gauge and fastener needs, the environment sets the metal and coating, and the look sets the paint. Running the steps in order keeps you from overpaying for a commercial gauge on an interior wall or underspecifying a snow-country roof.
- Define the application. Roof, wall, fence, or interior accent. This sets how much strength and weather resistance you need.
- Pick the profile. 7/8 inch corrugated for roofs, exterior walls, and fences; 1/2 inch for flat walls and interior accents.
- Choose the metal and coating. Galvalume as the default, aluminum near salt water, galvanized for budget or interior work.
- Set the gauge. 29 for sheds and interiors, 26 for residential, 24 for commercial, long spans, or heavy snow.
- Select a finish. Bare for utility and fences, SMP or Kynar 500 PVDF for long-life exterior color.
- Measure by coverage width. Order to the coverage figure, add side laps, and include about 10% waste for cuts.
For clean cuts when you reach installation, see how to cut corrugated metal roofing so you avoid burred edges that rust early.
Frequently asked questions
What are corrugated metal panels used for?
Corrugated metal panels are used for roofing, wall cladding and siding, fencing, and interior accent walls and ceilings, plus agricultural and utility buildings. The same rounded profile serves all of these jobs. The gauge, fastener, and finish change with the load and exposure, with roofs demanding the most corrosion resistance and the most careful fastening.
How much do corrugated metal panels cost?
Corrugated metal panels cost roughly $1 to $5 per square foot for material alone, or about $17 to $113 per sheet depending on size, metal, gauge, and finish. Installed as a roof, budget about $7 to $12 per square foot with labor and accessories. Bare light-gauge galvanized is cheapest, and painted 24 gauge Galvalume or aluminum costs the most.
What gauge are corrugated metal panels?
Corrugated metal panels commonly come in 29, 26, and 24 gauge, where a lower number means thicker steel. 29 gauge suits sheds, agriculture, and interior accents; 26 gauge is the residential sweet spot for roofs and walls; 24 gauge is used on commercial jobs, long spans, and heavy snow. 24 gauge usually costs 25% to 40% more than 26 gauge.
What is the difference between corrugated and R-panel?
Corrugated panels have a rounded, continuous wave, while R-panel and PBR use trapezoidal ribs with wide flat pans between them. Trapezoidal panels are stiffer per pound and common on commercial and metal-building roofs, while rounded corrugated gives the traditional agricultural and residential look. Both are exposed-fastener panels installed with gasketed screws.
Can you use corrugated roofing panels for siding?
Yes. The same corrugated panel used on a roof can clad a wall, which is common on barns, shops, and modern homes. On walls you can often use a lighter gauge because there is no snow load or foot traffic, and panels usually run vertically to drain. Follow the manufacturer’s wall fastening and trim details rather than roof details.
How long do corrugated metal panels last?
On a roof, painted or Galvalume corrugated metal panels often last about 40 to 60 years with proper maintenance, while bare galvanized may last less in wet or coastal climates. Lifespan depends on the coating, the gauge, the environment, and how well cut edges and fasteners are maintained. Aluminum resists coastal salt corrosion best.
Reviewed by The Roofing Brief Team. Last reviewed July 2026.