Corrugated Metal Roofs and Standing Seam Metal Roof – The Differences

A metal roof has a lifespan of 40 to 70 years. It is also fireproof, energy efficient, and environmentally friendly. These benefits and/or others may have convinced you that a metal roof would be great for your home.

However, if you looked up metal roofs, you’ve likely learned that not all of them are the same. Namely, you may have come across the terms ‘corrugated metal roofs’ and ‘standing seam metal roof’. If you’re wondering what the difference is between these two types, read on.

What is a Standing Seam vs Corrugated Metal Roof?

Both standing seam and corrugated metal roofs are made of metal panels. However, the specific designs that the metal roofing types take are different.

The term ‘corrugated’ can be defined as ‘shaped into alternating ridges and grooves’. True to its name, corrugated metal roofing consists of panels with curved or wavy ribs. Each panel is made so that a metal roof specialist can interlink it with its neighbors before fastening all the panels onto the roof substrate.

Standing seam metal roofing also consists of panels. However, the texture of these is smooth except for the vertical ribs on either side that allow for roofers to overlap and interlock panels together. Clips and fasteners concealed below the panels allow metal roof company roofers to attach them to the roof substrate.

Pros, Cons, Etc. of a Corrugated vs a Standing Seam Metal Roof

standing seam metal roof was invented more recently than a corrugated metal roof. However, that doesn’t necessarily mean that the standing seam type is the better of the two. There are still some reasons why corrugated metal roofs might make them the better option for a homeowner.

You can learn more about the pros, cons, and other details of both metal roof types below.

Corrugated Panels Are Cheaper

The one major disadvantage that homeowners face with standing seam has to do with cost. Standing seam metal roofs can cost about twice as much as corrugated. The installation process of the former panels can also be quite pricey.

One thing to keep in mind, though, is that the cost can vary depending on the homeowner’s choices. Certain colors, metals, and thicknesses cost far more than others. By being mindful of your choices, you can bring the price of standing seam panels down by quite a lot.

Standing Seam Panels Are Best on Low-Slope Roofs

Depending on your roof type, this isn’t necessarily a pro or con. Both corrugated and standing seam panels can work on higher-sloped roofs. Corrugated panels, however, are not intended for low-slope roofs.

Thus, if you already have a roof with a larger slope, you won’t face any issues with getting a corrugated metal roof. If you have a low-slope roof, however, you may need to get your roof structure replaced or get a standing seam roof instead.

Standing Seam Panels Tend to Be Thicker

‘Gauge’ refers to the thickness of a metal panel. The thicker your panel, the more durable it will usually be. However, it will also be heavier and this may require you to reinforce your roof structure.

Standing seam panels tend to come in thicker gauges than corrugated ones. This makes them more able to endure rough weather.

However, you can choose thicker gauges of corrugated metal panels. This can make the corrugated panels equal in strength against weather. However, as this article will discuss later, corrugated panels have another feature that makes them more vulnerable to rough weather.

Standing Seam Panels Are More Attractive

Appearance is subjective, of course. However, the consensus seems to be that standing seam is the more attractive choice. The corrugated ridges often look rougher than the sleek and smooth panels of the standing seam ones.

In addition, there are a lot more customizable options for standing seam panels as well. Homeowners can choose between several different colors and designs. Corrugated metal roofs are more limited in this area.

The one aesthetic advantage that corrugated metal roofs over standing seam ones has to do with oil canning. This is a wrinkling that appears on flat metal, which doesn’t affect metal performance but may make it unattractive. The ridges of corrugated metal panels make it harder for oil canning to appear on them.

Standing Seam Panels Have Covered Fasteners

As mentioned, the fasteners of a standing seam roof are concealed below the panels. This isn’t the case with corrugated roofs. The fasteners on these are left exposed to the elements.

There are two disadvantages that corrugated metal roofs face due to their exposed fasteners. The first is that water can more easily slip between the panels. This can allow water to damage the substrate below by causing it to rot and/or grow mold.

Also, fasteners that are exposed to the elements will start to rust and otherwise wear down faster. This can leave the panels vulnerable to coming loose. Experts recommend that homeowners hire a metal roof company to constantly check the vulnerable fasteners to make sure they remain in good shape.

The fasteners of standing seam roofs, however, are not vulnerable to early wear and easy leaks. The protection given to them by the panel material above reduces the chance of these issues. As a result, a metal roof specialist doesn’t have to check on these fasteners as often.

Garvin Metal Roofs Offers Metal Roof Installations in New York, Ohio, Florida, and Pennsylvania

Overall, a standing seam metal roof seems like the better option over corrugated. However, if you don’t have the money for it, a corrugated metal roof still offers the general advantages of any metal roof, such as longevity and energy efficiency.

Also, if you’re ready to have a metal roof installed on your home, consider the services of Garvin Metal Roofs. With over 30 years in the business, we certainly know how to choose high-quality roofing and install it with high-level craftsmanship. Contact us now to schedule an appointment and get a free price estimate.