Standing Seam Panel Profiles: Flat, Striated, and Pencil Rib

If you've settled on standing seam for your metal roofing in Texas, the panel profile is one of the last choices you'll make, and it's mostly about looks. The table above has the short version, and for most homes our recommendation is striated. Below, you'll see what each profile is, what it does about oil-canning, and how it reads on a home, so you can pick the one you'll be happy looking at for the next few decades.

A standing seam panel profile is the shape rolled into the flat pan between the seams. A flat profile leaves the pan smooth. A striated profile presses fine, shallow lines along its length. A pencil rib profile adds small raised ribs. The profile changes the look and how much oil-canning shows, not how the seam seals.

The profile is the shape of the pan, the wide, flat part of the panel between two raised seams.

The profile is a separate choice from the seam. How the seam closes, snapped by hand or folded twice by a machine, is covered in our guide to snap-lock vs. mechanical double-lock. You can pair any of these three pan profiles with the seam your roof needs. If you're still deciding whether standing seam is right for you at all, start with our overview of standing seam metal roofing.

Oil-canning is a wavy or rippled look that can show in the flat areas of a metal panel. It comes from stresses created when the sheet metal is rolled into shape. It's a normal trait of light-gauge sheet metal, not a defect or an install failure, and it has no effect on how well the roof keeps water out or how long it lasts.

Oil-canning is the main reason the profile matters beyond looks, so it's worth understanding first.

Oil-canning is purely cosmetic, but it's the thing homeowners notice. It shifts with the sun angle, the shadows, and the season, so a roof can look perfectly smooth at noon and a little wavy late in the afternoon. The wider and smoother the flat area, the more room the light has to pool across it and show those waves. That's exactly what the profile changes.

No honest roofer can promise that a metal panel will never show any oil-canning. What you can do is choose a profile, finish, and thickness that keep it to a minimum.

The flat profile leaves the pan smooth from seam to seam.

What it looks like. A plain, smooth pan between the raised seams. From the street, the seams are the only lines you see.

What it does about oil-canning. Nothing on its own. A wide, smooth pan is where oil-canning shows the most, because there's nothing to break up the light.

How it looks on a home. The cleanest, most minimal metal roof you can put on a house. It suits modern and farmhouse styles where you want strong, simple lines.

Where it fits. Choose flat if you love that pure look and you're comfortable with a little waviness at certain times of day. If you go flat, the other levers matter more: a matte or lighter finish shows less oil-canning than a glossy dark one, and a thicker panel resists it better than a thinner one. Our guide to 24 vs. 26 gauge metal roofing explains the thickness side of that choice.

A striated profile, also called a striation profile, presses fine, shallow lines lengthwise across the whole pan.

What it looks like. Up close you see many fine, evenly spaced lines running the length of the panel. From the ground they blend into a subtle texture, and the roof still reads as nearly flat.

What it does about oil-canning. Those gentle lines break up the smooth surface so light doesn't pool across one wide plane. That makes any waviness much harder to see.

How it looks on a home. Close to the flat profile from the street, with a soft texture instead of a mirror-smooth pan. It fits almost any style of home.

Where it fits. Striated is our default recommendation for most homes. You keep the clean standing seam look and give oil-canning less room to show, at no extra cost.

We recommend striations for most of our customers. They reduce oil canning, add strength, and give you a distinctive look that many roofers don't offer.

A pencil rib profile adds small raised ribs that run the length of the pan.

What it looks like. A few slim, raised ribs between each pair of seams, running from eave to ridge. They're more defined than striations, so you see them as lines rather than texture.

What it does about oil-canning. Like striations, the ribs break up the flat surface so light doesn't pool across one wide, smooth area. That helps hide waviness.

How it looks on a home. More visible detail than the other two. The roof shows more vertical lines, which adds a bit of rhythm and texture to a large roof plane.

Where it fits. Choose pencil rib if you like the look of extra lines between the seams, or if a big, simple roof plane would look too plain with a smooth pan.

At ARP, there is no cost difference between the flat, striated, and pencil rib profiles. You pick the profile you like, and we roll-form the panels on your job site to match. What moves the price of a standing seam roof is the size and shape of your roof, the seam type, and the panel thickness, not the profile.

Not at ARP.

Because we roll-form the panels right on your job site, the profile is simply a setting on the machine. That's also why you can ask to see all three in person before you decide. For how the rest of the job goes, from tear-off to the final trim, see our metal roof installation process guide.

We roll-form all three profiles on site, so we'll tell you straight whether we're your crew.

Cards for the rest of your standing seam decision:

• McElroy Metal: standing seam
• TekRoofing Systems: stone-coated

Industry Membership:

• BBB A+ Member
• CTRCA (Central Texas Roofing Contractors Association) Member

Book a free inspection and we'll show you samples of each profile, look at your roof, and put your choice in a written scope. No pressure, no obligation.

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