When you're designing or building a structure that demands lasting beauty and dependable performance, every detail matters—especially the roof. At McElroy Metal, we understand the need for roofing solutions that don't just look great but also stand up to everything Mother Nature throws their way. That's exactly why we created the Maxima family of standing seam panels.
From bold architectural statements to high-performance protection, Maxima is engineered to do it all. In this post, we'll take a closer look at what makes the Maxima line such a favorite among architects, contractors, and building owners, and how it can elevate your next project.
Maxima is a mechanically seamed standing seam roofing system designed to meet the rigorous standards of today's commercial and architectural projects. Available in three configurations: Maxima 1.5, Maxima ADV, Maxima 2, and Maxima 3, this system combines crisp visual lines with exceptional engineering.
Each version offers concealed fasteners, factory-applied sealant, and the durability required for demanding environments. Whether you're building a government facility, school, retail space, or a custom home, Maxima offers the performance and aesthetic flexibility to match your vision.
Multiple Seam Heights: Maxima 1.5 features a 1.5" seam, while Maxima ADV and Maxima 2 feature 2" seams. In addition to these configurations, McElroy Metal also offers a 3" high Maxima profile for unique design and structural requirements. The taller profile adds visual depth and increases uplift resistance, making it ideal for areas prone to high winds.
Mechanical Seaming for Long-Term Protection: Each panel is seamed mechanically in the field as the final installation step. This creates a robust and weather-tight connection that withstands strong winds, snow loads, and temperature fluctuations. While some profiles are designed for a 90-degree seam and others for a 180-degree seam, not all Maxima panels can accommodate both. Be sure to choose the seam type that matches your specific panel selection and performance needs.
Designed for Complex Architecture: Curved roof? No problem! Need tapered panels? We've got those too. Maxima is as flexible as your imagination, with installation options over solid decking or open framing.
Jobsite Rollforming = Addresses Panel Length Limitations: Have a long roof run? Our jobsite rollforming eliminates the need for panel endlaps, ensuring a clean, uninterrupted look and stronger performance.
Factory-applied sealant: Time is money, and consistency is key. Our Maxima panels come with factory-applied in-seam sealant for a perfect fit every time—no guessing or mess on the jobsite.
Maxima isn't just a system on paper—it's proven in the real world. Just ask Kyle Breuer, Town Manager of Surf City, North Carolina. After Hurricane Florence damaged their municipal complex, resilience became a top priority.
"We selected a metal roof to add resilience to the new structure," Breuer said. "Our previous building was lost to water damage during Hurricane Florence, and that damage occurred because of water penetration through the roof."
"The new facility now features Maxima panels installed over solid decking, with floating clips and 180-degree seams. It's built to take on the next storm—and look good doing it."
Architects appreciate the design flexibility that Maxima offers:
Contractors love how easy it is to work with:
The Maxima panel family is perfect for:
From a design standpoint, Maxima helps buildings stand out. From a performance standpoint, it helps them stand up to the elements.
We take sustainability seriously at McElroy Metal. Our Maxima panels:
And because we're employee-owned, our entire team is personally invested in the quality of every panel we make.
| Maxima 1.5 | Maxima ADV | Maxima 2 | Maxima 3 | |
|---|---|---|---|---|
|
Seam Height
|
1.5"
|
2.0"
|
2.0"
|
3.0″
|
|
3" High Option Available
|
Yes
|
Yes
|
Yes
|
Yes
|
|
Seam Type
|
180° mechanical
|
180° mechanical
|
90° mechanical
|
90° mechanical
|
|
Curved/Tapered Capability
|
Yes
|
Yes
|
Yes
|
No
|
|
Panel Widths
|
12", 16", 18"
|
12", 16", 18"
|
12", 16", 18"
|
18″, 24″
|
|
Substrates Available
|
Galvalume®, Aluminum (non-standard)
|
Galvalume®, Aluminum (non-standard)
|
Galvalume®, Aluminum (non-standard)
|
Galvalume®, Aluminum (non-standard)
|
|
Minimum Slope
|
1:12
|
½:12
|
½:12
|
¼:12
|
|
Rollforming Option
|
No
|
Yes
|
Yes
|
No
|
With over 60+ years in the industry, 14 manufacturing facilities, and a national network of service centers, McElroy Metal brings expertise, innovation, and support to every jobsite. We also back our Maxima panels with optional Weathertight Warranties for added peace of mind.
And here's the part we love most—hearing back from customers who are proud of the roofs they chose. Whether it's a hurricane-resistant city hall or a dream coastal home, Maxima continues to deliver on its promise: bold design, superior performance.
The roof you choose says a lot about your project. When you choose Maxima, you're choosing a system that's designed to go the distance, in both looks and longevity. It's more than metal. It's peace of mind, backed by people who care.
Ready to bring Maxima to your next project? Reach out today or visit www.mcelroymetal.com to learn more.
Maxima is McElroy Metal's family of mechanically seamed standing seam roofing systems. Available in four configurations—Maxima 1.5, Maxima ADV, Maxima 2, and Maxima 3—it blends crisp architectural lines with the strength and durability needed for commercial, institutional, and residential projects.
Each panel is mechanically seamed in the field, creating a weather-tight, long-lasting connection designed to resist wind, snow, and temperature changes. Factory-applied sealant further ensures consistency and leak protection.
Yes. Maxima 1.5, ADV, and 2 can be curved or tapered to fit complex designs. Maxima 3 offers a bold 3" profile but does not support curved or tapered applications. Learn more about curved standing seam options.
Widths vary by profile, but standard options include 12", 16", and 18" for Maxima 1.5, ADV, and 2; and 18" and 24" for Maxima 3. Substrates include Galvalume® steel and aluminum (non-standard).
Yes, Maxima ADV and Maxima 2 can be jobsite rollformed, making them ideal for projects with long roof runs where endlaps are undesirable. Maxima 1.5 and Maxima 3 are only factory-formed. See our Onsite Rollforming overview.
Maxima panels are trusted for schools, municipal buildings, retail spaces, churches, coastal residences, and custom homes. Their balance of beauty and strength makes them versatile for nearly any project.
Absolutely. Maxima panels are 100% recyclable, available in cool roof colors that improve energy efficiency, and built for decades of service with minimal maintenance.
Maxima panels are 100% recyclable, offer cool roof options that can reduce energy consumption, and deliver decades of service with minimal maintenance.
Yes. Optional Weathertight Warranties are available when the system is designed and installed to specification, providing added peace of mind.
McElroy Metal brings over 60 years of experience, 14 manufacturing facilities, and a national network of service centers. As an employee-owned company, the team is personally invested in the quality of every panel.
Contact McElroy Metal for specification guidance, color and material selection, details on jobsite rollforming, and warranty options. A product video is also available to help you visualize features and installation considerations. Visit mcelroymetal.com to learn more.