The difference between standing seam vs. corrugated metal roofing comes down to several things including how the panels are attached. Standing seam panels lock together over concealed fasteners, so no screws pass through the metal surface. Corrugated panels are screwed straight through the face of the metal, with hundreds of exposed screws with rubber washers that deteriorate within 10 – 15 years. In addition, as the metal expands and contracts as it heats and cools, those same washer screws work themselves out creating a gap which can lead to hundreds of potential leak points over the surface of your roof. Designed as siding for pole barns that are vertical, they have no business being on a sloped roof where sun, water and ice break down the sealing capabilities of the rubber washers quickly.
Corrugated metal roofing is also typically coated with silicone polyester paint that fades dramatically within 10 – 15 years. Reds change to pinks, black changes to charcoal, and the list goes on. Distinctive Metal Roofing only uses products that are coated with Kynar PVDF finishes that are guaranteed against fading and chalking, among other silicone polyester paint issues, for 40 years.
Corrugated metal roofs are also a very thin 29 gauge metal vs. the much thicker 24 gauge of a Distinctive Metal Roofing standing seam roof. 24 gauge resists hail denting and penetration whereas 29 gauge metal shows it all.
Corrugated costs less to buy and install. Standing seam costs more and asks less of you over the decades that follow. For homes across Cleveland, Ohio and Pittsburgh, Pennsylvania, that trade-off is usually why standing seam ends up on homes and corrugated ends up on barns.
What Is Standing Seam Metal Roofing?
Standing seam metal roofing is a concealed fastened, vertical panel system with raised seams that run continuously from ridge to eave. Each panel is secured to the deck with screws and the next panel snap locks over the last so the fasteners across the entire roof are covered by the metal panel itself.
The standing seam panels Distinctive Metal Roofing installs are 24-gauge steel finished with Kynar 500 PVDF resin, with panels, trim pieces, and flashings factory formed from the same gauge for a precise fit. The continuous snap-lock, mechanically seamed, or clip-mounted systems we install, depending on the pitch of your roof, produce both the weather-tight connection and the clean, straight lines that define the look.
What Is Corrugated Metal Roofing?
Corrugated metal roofing is an exposed fastener system made from formed sheets with a repeating wavy or ribbed profile. Panels overlap at the edges and are screwed through the face into the deck or purlins, with a rubber washer under each screw head to seal the penetration.
This option is the most economical metal panel available, and the most problematic long-term. It’s typically rolled in thinner 28- to 29-gauge steel, compared with the 24-gauge Distinctive Metal Roofing uses for standing seam, and it requires a minimum roof slope, commonly 3:12, to shed water reliably.
Corrugated vs. Standing Seam at a Glance
| Standing Seam | Corrugated | |
|---|---|---|
| Fastening | Concealed clips beneath an interlocking raised seam | Screws driven through the face of the panel |
| Visible screws | None | Rows of exposed screws with rubber washers |
| Typical gauge | 24-gauge (thicker) | 28- to 29-gauge (thinner) |
| Installed cost | About two to three times the cost of asphalt | About the same as an asphalt roof |
| Maintenance |
No maintenance service necessary |
Screws and washers need checking and eventual replacement |
| Look | Clean vertical lines, architectural | Wavy ribbed profile, agricultural or rustic |
| Best suited to |
Residential and commercial projects |
Barns, pole buildings, sheds, detached garages, dog houses |
Which Costs More, and Why?
Corrugated is the cheaper system, generally costing about the same as an asphalt roof. Three things account for the gap: the steel is thinner, the panels go down faster because they are simply screwed through the face, and very little custom trim fabrication involved. If a neighbor’s metal roof costs about the same as asphalt and you see the heads of screws on the surface of the metal, it is an exposed fastened corrugated roof.
Standing seam provides long term value through its permanence and aesthetic beauty that last decades. There is no fastener service cycle, the panels carry a longer service life, and the roof is far less likely to need repair or replacement in its first 10 – 15 years of life. The longer view of that math is covered in why paying more for a metal roof saves money.
Lifespan and Maintenance: Where the Fasteners Decide It
Exposed fasteners are the maintenance items on a corrugated roof, and they are the reason the two systems age differently. Every screw is a hole through the panel, sealed by a rubber washer that degrades under sun and temperature swings. Metal expands and contracts through the year, which can back screws out slightly or loosen them, and a loose screw over a worn washer is a leak waiting for the next heavy rain.
Standing seam fasteners are never exposed to the elements and can never be the cause of a leak. The biggest difference between a corrugated metal roof and standing seam is that the roof surface is not held down by hundreds of individual penetrations. Our comparison of exposed and hidden metal roof fasteners goes deeper on how each fastening method behaves over time.
Appearance and Curb Appeal
The two profiles read very differently from the curb. Standing seam gives a home clean vertical lines and continuous shadow lines that accent the pitch and plane of every roof angle, which is why it suits both historic homes and modern architecture. Corrugated reads rustic and utilitarian, with a wavy profile broken up by visible rows of screws.
Color selection differs as well. Standing seam is available in a wide range of fade-resistant and chalk-resistant finishes, from matte black and dark bronze to aged copper and Hartford green, and those finishes hold their color for decades. Corrugated is usually stocked in a narrower set of basic colors with shorter finish warranties.
When Corrugated Metal Roofing Is the Right Choice
Corrugated is a less permanent and watertight choice when the structure is utilitarian and the budget is the governing constraint. Barns, pole buildings, equipment sheds, and detached garages, are more acceptable structures for an exposed fastened panel.
For a primary residence, the calculation flips. The roof is visible from the street, it affects resale value, checking to see if 100’s of fasteners are seated properly and forming a proper seal on a two-story house is less practical, and the homeowner is generally buying a roof they do not intend to service or replace again. That is the case where standing seam is worth its price.
How Northeast Ohio and Western Pennsylvania Weather Changes the Answer
Regional climate widens the gap between the two systems. Northeast Ohio and western Pennsylvania put roofs through the brunt of lake-effect snow, repeated freeze and thaw cycles, ice forming at the eaves, winds off of Lake Erie, and summer heat. Each of those conditions targets exactly the weak point of an exposed fastener panel.
Freeze and thaw cycling is the most punishing. A corrugated roof expands and contracts through hundreds of temperature swings a year, working against every screw hole, and water that gets past a tired washer freezes, expands, and enlarges the opening. Standing seam handles the same thermal movement through its striations, with no penetration to open up.
Snow behaves differently on the two profiles as well. The smooth surface of standing seam sheds snow readily, which keeps load off the structure but means snow can release in sheets over entryways, walkways, and driveways. Snow bars solve that by holding snow in place until it melts. More on how regional conditions affect roofing can be found in our guide to how bad weather affects your roof in northeast Ohio and western Pennsylvania.
Frequently Asked Questions
Is corrugated metal roofing cheaper than standing seam?
Yes. Corrugated typically costs about the same as an asphalt roof, because the steel is thinner and the panels install faster less custom trim work.
Which metal roof lasts longer?
Standing seam lasts longer. Both systems are galvalume but a corrugated roof’s service life is limited by its fasteners and washers, while a standing seam roof has no comparable wear point across the roof surface. A standing seam roof from Distinctive Metal Roofing is designed to last at least 60 years.
Do standing seam metal roofs leak?
A properly installed standing seam roof has no penetrations where the cuts across the the roof field. Most metal roof leaks trace back to fasteners, flashing details, or installation errors rather than the panels themselves.
Does Distinctive Metal Roofing install corrugated roofing?
No. Distinctive Metal Roofing installs only permanent concealed fastened systems: standing seam metal roofing and metal shingle profiles including KasselWood, ProVia, and EDCO Arrowline. Homeowners weighing standing seam vs. corrugated for a house, rather than an outbuilding, are the buyers these systems are built for.
Talk Through the Options with a Metal Roofing Specialist
Distinctive Metal Roofing has worked exclusively in metal roofing for more than 16 years, with over 600 projects completed across Cleveland, Ohio and Pittsburgh, Pennsylvania, an A+ BBB rating, and membership in the Metal Roofing Alliance.
Our standing seam metal roofing carries a 40-year coating warranty and a 20-year Galvalume warranty. Contact our team for a free estimate and a straight answer about which system fits your home.