Maxima Standing Seam Roof Panel

Versatile, mechanically seamed standing seam family engineered for high wind uplift, architectural flexibility, and long-term performance.

McElroy Metal’s Maxima panels are a family of mechanically seamed, concealed fastener standing seam systems, offering multiple rib heights, seam configurations, and panel widths. With leg heights from 1 ½” to 3” and pan widths from 12”-24”, our Maxima series is one of the most robust offerings in the industry.

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Renderings & Profiles

Color Charts

Great for:

WALLS

ROOFS

RESIDENTIAL

COMMERCIAL

Maxima Standing Seam Roof Panel Specs at a Glance*

Panel Type

Rib Height

Major Rib On Center

Cover Width

Factory Panel Length

Onsite Forming Available

Substrate/Gauges

Installation

Finishes

Minimum Slope

Concealed fastener, mechanically seamed

1 1/2", 2", 3"

1.5"; 2" & ADV: 12", 16", 18"; 3": 18", 24"

Up to 70' (varies by manufacturing facility)

Yes

Std: 24 GA Galvalume®, Opt: 22 GA Galvalume®, .032/.040 Aluminum

Solid deck or open framing

Kynar 500® (PVDF)

1.5": 1:12, 2": 1/2:12, 3": 1/4:12

*Specifications and details are subject to change. Always verify project requirements with current McElroy Metal technical documentation

Maxima Ideal Applications

Architectural, commercial, and industrial roofing where long panel runs and watertight seams are required.
Low- to steep-slope roofs needing structural capacity and tested performance.
Projects requiring high wind uplift resistance and factory-notched precision for faster installation.
Retrofit or new construction projects demanding long-term aesthetics and proven performance.

See 3D Textures Here

Maxima Top 3 Benefits

Proven Structural Strength: Mechanically seamed design with rib heights from 1 ½” to 3" delivers excellent wind uplift resistance and structural integrity for demanding environments.
Long-Term Weather Protection: Concealed fasteners, continuous seams and in-seam sealant ensure watertight performance, while the Kynar 500® (PVDF) finish provides industry-leading fade and chalk resistance.
Design Flexibility: Available in four profiles—Maxima 1.5, Maxima 2, Maxima ADV, and Maxima 324—to meet both architectural and structural design requirements.

Maxima Deep Dive Article