Standing seam metal roofing has become something of a “go-to” for architects, contractors, and homeowners aiming for durability, aesthetics, and low maintenance. But “standing seam” is not a single product — it’s a family of panel styles, dimensions, gauges, and seam types. In this post, we’ll explore what panel styles and sizes are most popular in the U.S., how regional climate influences those choices, and include a sample profile drawing to help you visualize what we’re talking about.

What Makes a Panel “Popular”?

Before we dive into numbers, let’s define what “popular” means in this context. A panel style or size becomes popular when it hits a sweet spot of:

• Performance (wind uplift resistance, leak prevention, structural strength)

• Cost efficiency (material cost, ease of installation, waste)

• Aesthetics (clean lines, pleasing proportions)

• Availability / manufacturability (ease to roll-form, standard coil widths)

Because of these trade-offs, you’ll often see certain panel dimensions and styles repeated across many projects.

Typical / “Popular” Panel Specifications in the U.S.

Here are some of the “go-to” or “most used” spec ranges for standing seam metal roofing in the U.S.:

A frequently seen “typical” (but not universal) specification is: 16″ wide exposure, ~1.75″ rib height, 24 gauge, snap-lock with concealed clips.

Regional / Climatic Variation

The “best” or “most used” panel in, say, Florida is different from what you might choose in Idaho or Minnesota. Here’s how region changes things:

Florida / Southeast / Gulf Coast

• High wind (hurricane) zones — uplift resistance is critical

• Greater concern for corrosion, salt, UV exposure

• Preference for heavier gauge (24 ga or even 22 ga when needed)

• Panels must often meet strict building code / product approval (e.g. Florida product approvals)

• Efficient installation (snap-lock) helps control labor in humid conditions

In Florida specifically, you’ll see panels that carry Florida product approval (e.g. the 16″ standing seam “Minor Rib” version is cited as having Florida approval. Metal Roofing Source

Northern U.S. / Snow Country

• Snow loads, freeze-thaw cycles, thermal movement take priority

• Mechanical seam (double-lock) more common, especially for steeper slopes

• Heavy gauge (thicker than 24 ga) sometimes used

• Rib height may be higher to help shed snow and standing water

Rocky Mountain / High Elevation

• Very high wind, sometimes extreme loads, wide temperature swings

• Materials with strong coatings (for corrosion resistance under UV)

• More frequent use of custom / engineered panels

General Trends by Region

• In milder climates, 26 ga might suffice in many places; in more extreme climates, 24 or even 22 ga is safer. Western States Metal Roofing+2Western States Metal Roofing+2

• Panels with striations or stiffening ribs are often used to reduce “oil canning” (visual distortion) especially in wider panels. Sheffield Metals+1

• In coastal or salt exposure zones, premium coatings (PVDF / Kynar) and attention to galvanic isolation are common additional specification constraints.

Putting It All Together: What a Regionally “Popular” Panel Might Be

If I were to pick what people in Florida / Gulf Coast region often choose (or target), it might be:

• 16″ exposed width

• ~1.75″ vertical rib height

• 24 gauge Galvalume or painted steel

• Snap-lock (concealed clip)

• PVDF / Kynar 500 finish (for durability in sun / salt)

• Field-formed or factory-cut to length

In contrast, in a Northern snowbelt region, you might often see:

• 12″ or 16″ widths

• 2″ rib height

• 24 ga, sometimes 22 ga

• Double-lock mechanical seams in higher exposure locations

• More robust warranties and thicker coatings

Tips / Considerations for Choosing Panel Size & Style

• Span & engineering: Longer spans or heavier snow/wind loads may require narrower panels or stronger seams.

• Oil canning: Wider panels (e.g. 18″ or more) are more prone to visible waviness; using stiffening ribs or striations helps.

• Installation speed: Snap-lock is faster (less labor) than mechanical seaming.

• Climate & exposure: In coastal, high-wind, or hail zones, err on the side of stronger/gauge and high-quality coatings.

• Panel length & waste: Custom lengths reduce seams and waste if the panel lengths are well optimized.

• Aesthetic proportions: The visual spacing of ribs relative to building scale matters — sometimes designers prefer narrower exposed widths for a particular look.