Metal roofing types sort along three axes: the fastener family (hidden-fastener standing seam vs exposed-fastener panels), the panel profile (the shape of the rib or corrugation), and the metal itself (steel, aluminum, copper, or zinc). Pick the fastener family first, then the profile, then the metal. This guide names every common metal roof panel and profile, gives the typical gauge for each, and shows which pairing fits a house, a barn, or a commercial building.
This page is the overview hub. For pricing, see metal roof cost. For a single-profile deep dive, see corrugated metal roofing and standing seam cost.
What are the two main types of metal roofing?
Metal roofing splits into two fastener families: hidden-fastener systems (standing seam) and exposed-fastener panels (corrugated, R-panel, ribbed, and similar). In standing seam, clips or the panel edge hold the roof down and no screw pierces the flat of the panel. In exposed-fastener systems, screws run straight through the panel face into the deck or purlin, with a neoprene washer sealing each hole.
This one distinction drives cost, lifespan, and where each system belongs. Hidden-fastener standing seam typically lasts 40 to 70 years and carries wind ratings of 140 to 180 mph because nothing penetrates the water plane. Exposed-fastener panels cost far less and install faster, but the rubber washers under the screws are the wear point: they dry out and back out over a 20 to 40 year life, so the roof needs a fastener check every decade or so.
| Fastener family | How it holds down | Typical life | Relative cost | Best for |
|---|---|---|---|---|
| Hidden fastener (standing seam) | Clips or seam, no face penetration | 40 to 70+ years | Highest | Homes, high wind, architectural |
| Exposed fastener (corrugated, R-panel, ribbed) | Screws through panel face | 20 to 40 years | Lowest | Barns, shops, budget, agricultural |
Standing seam metal roof panel types
Standing seam panels run vertically from ridge to eave with raised seams that lock together over hidden clips. The three common seam types are snap-lock, mechanical-seam, and nail-strip (fastener-flange). They differ in how the seam closes and how much water head they resist, which sets the minimum roof slope each can handle.
- Snap-lock: panel edges snap together by hand over a clip. No seaming tool needed. Common on residential roofs at 3:12 pitch and steeper.
- Mechanical seam: a powered or hand seamer folds the seam 90 or 180 degrees. The tightest, most weathertight seam, used on low slopes down to 1:12 or 2:12 and on commercial work.
- Nail-strip (fastener flange): a hidden flange along the panel edge is nailed to the deck, then the next panel snaps over it. Cheaper to install than clipped systems, common on residential.
Seam heights run 1 inch to 1.75 inches, and rib spacing is usually 12 to 19 inches. Standing seam is normally rolled in 24 gauge steel or heavier, or in aluminum, because the flat pan shows oil-canning at thinner gauges. Named residential trade profiles include 1.75-inch mechanical-seam and the common 1-inch snap-lock; these are the panels behind most quotes on standing seam metal roof cost.
Exposed-fastener panel types and profile names
Exposed-fastener panels are screwed through the face and named by their rib shape. The four you will see quoted most are corrugated, R-panel (PBR), ribbed (Max-Rib and similar), and 5V-crimp. Each has a standard coverage width and gauge range, which is what a supplier means when they list a profile by name.
| Profile name | Rib shape | Typical gauge | Common use |
|---|---|---|---|
| 7/8″ Corrugated | Rounded wave | 26 to 29 | Agricultural, rustic residential, accent |
| R-panel / PBR | Trapezoidal high rib | 26 | Commercial, metal buildings, pole barns |
| Ribbed (Max-Rib, Tuff-Rib) | Low trapezoidal rib | 26 to 29 | Residential, light commercial, sheds |
| 5V-Crimp | Flat with V-crimps | 26 to 29 | Historic and coastal residential |
| 7.2 / Mega-Rib | Deep symmetrical rib | 22 to 24 | Long spans, industrial walls and roofs |
Corrugated is the oldest profile and reads rustic; R-panel (also called PBR) is the workhorse of metal buildings; 5V-crimp is the classic Florida and coastal look. Gauge matters more than profile for dent resistance: 26 gauge is stiffer than 29 gauge, and lower numbers mean thicker steel. The corrugated metal roofing guide covers install detail and best uses for that profile specifically.
Standing seam vs corrugated: which type should you pick?
Standing seam suits a house or any roof where a 40-plus year life and clean look justify the price; corrugated and other exposed-fastener panels suit barns, shops, and budget projects where the lower price and faster install win. The core trade is longevity and weathertightness against upfront cost. Standing seam usually runs at least double the installed price of an exposed-fastener panel of the same metal.
| Factor | Standing seam | Corrugated / exposed fastener |
|---|---|---|
| Fasteners | Hidden | Exposed through face |
| Typical gauge | 22 to 24 | 26 to 29 |
| Lifespan | 40 to 70+ years | 20 to 40 years |
| Maintenance | Minimal | Refasten washers over time |
| Relative installed cost | Highest | Lowest, often 50%+ less |
| Look | Modern, architectural | Rustic to industrial |
For the same house-versus-house pricing math, see metal vs asphalt shingle roof, and for commercial systems including insulated metal panels, see commercial metal roofing.
Metal roof styles beyond panels: shingles, tile, and slate
Beyond vertical panels, metal also comes as stamped products that mimic other roofs: metal shingles, metal tile, metal shake, and metal slate. These are interlocking pieces or modular panels pressed to look like asphalt, clay tile, wood shake, or slate, giving the durability of metal with a traditional profile. They install like a shingle field rather than long panels, so they handle complex rooflines with many valleys and dormers better than long-run standing seam.
- Metal shingles: stamped steel or aluminum in a shingle look, often stone-coated. Good for cut-up roofs.
- Metal tile: profiled to mimic Spanish or barrel clay tile at a fraction of the weight.
- Metal shake: textured to read as split wood shake, non-combustible.
- Metal slate: flat stamped panels imitating natural slate without the structural load.
Stone-coated steel is the most common of these in the U.S. residential market. It carries the wind and fire performance of metal while matching neighborhood aesthetics that a bare panel roof would not.
Which metal? Steel, aluminum, copper, and zinc compared
The metal is the third choice, independent of profile. Galvalume-coated steel is the default for cost and strength, aluminum resists coastal salt corrosion, and copper and zinc are premium architectural metals that develop a patina and last a century or more. The same standing seam or corrugated profile can be rolled in any of these, so metal and profile are separate decisions.
| Metal | Relative cost | Lifespan | Standout trait |
|---|---|---|---|
| Galvalume steel | Low to moderate | 40 to 60 years | Strength per dollar, most common |
| Aluminum | Moderate | 50+ years | Will not rust, best near saltwater |
| Copper | High | 100+ years | Patinas, architectural accents |
| Zinc | High | 80 to 100 years | Self-healing patina, low expansion |
Steel dominates because it costs the least and holds up in most climates. Aluminum earns its premium within a few miles of the coast, where galvanized steel edges can rust. Copper and zinc are usually reserved for accents, historic work, or high-end custom homes rather than whole roofs.
How to choose a metal roofing type in order
Choose in three steps: fastener family, then profile, then metal. This order works because the fastener family sets the budget and lifespan band, the profile sets the look and slope range, and the metal fine-tunes for climate and appearance. Working the other direction leads to a profile that does not fit the slope or a metal that blows the budget.
- Fastener family: pick hidden-fastener standing seam for a long-life house roof, or an exposed-fastener panel for budget, barns, or outbuildings.
- Profile and slope: confirm the profile suits your pitch. Snap-lock and most exposed panels want 3:12 or steeper; mechanical-seam standing seam handles down to 1:12.
- Metal and climate: default to galvalume steel, switch to aluminum near the coast, and consider copper or zinc only for accents or premium work.
Once the type is set, get itemized numbers before you sign. The metal roof cost guide breaks down per-square pricing by type and region so you can sanity-check a quote against the profile and metal you chose here.
Reviewed by The Roofing Brief Team. Last reviewed July 2026.