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      Mega Rib YMCA_015-1

      Mega-Rib Exposed Fastened Metal Roof & Wall Panel

      High-strength 7.2" rib panel offers exceptional spanning capability in industrial and commercial applications.

      McElroy Metal’s Mega-Rib combines bold 1½" ribs and 36" wide coverage to deliver outstanding span capacity, structural reliability, and a clean, modern appearance for roofs or walls.

      Renderings & Profiles

      Color Charts

      Great for:

      walls-icon
      WALLS
      roofs-icon
      ROOFS
      residential-icon
      RESIDENTIAL
      commercial-icon
      COMMERCIAL
      Mega-Rib Panel
      Mega-Rib Panel Profile
      Mega-Rib Exposed Fastened Wall & Roof 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
      Exposed Fastener Metal Roof & Wall Panel
      1 1/2"
      7.2”
      36"
      Up to 50' (varies by manufacturing facility)
      No
      22 GA, 24 GA & 26 GA Galvalume®
      Solid Deck or Open Framing
      Kynar 500® (PVDF); Galvalume® or Zincalume Plus (acrylic-coated)
      1:12 tape sealant required for all slopes

      Mega-Rib Ideal Applications

      • Large commercial and industrial facilities, such as warehouses and distribution centers.

      • Post-frame and pre-engineered metal buildings require exceptional spanning strength.

      • Architectural projects seeking bold visual lines and structural capability.

      • Roof and wall systems that prioritize durability, coverage, and economy.

      See 3D Textures Here
      Mega-Rib Panel
      Mega-Rib Panel
      Mega-Rib Panel
      Mega-Rib Panel
      Mega-Rib Panel
      Mega-Rib Panel
      Mega-Rib Panel

      Mega-Rib Top 3 Benefits

      1. Exceptional Spanning Strength: The 1½" rib height and wide coverage provide superior load capacity and structural performance on large roof and wall systems.

      2. Bold Architectural Appearance: Distinctive deep ribs create strong visual rhythm and shadow lines, adding architectural character to commercial and industrial buildings.

      3. Long-Term Durability and Finish Options: Available in Galvalume®, Kynar 500® (PVDF), or Silicone Modified Polyester (SMP) finishes, providing long-lasting color retention, corrosion resistance, and weather protection.

      Mega-Rib Deep Dive Article

      Color Charts

      Mega-Rib Color Chart Architectural Color Chart Standard Color Chart

      CAD Drawings

      Mega-Rib Eave Detail Mega-Rib Eave with Gutter Detail Mega-Rib End Lap Detail Mega-Rib Base Detail Mega-Rib Head Detail Mega-Rib High Eave Detail Mega-Rib Jamb Detail Mega-Rib Outside Corner Detail Mega-Rib Panel to Girt Detail Mega-Rib Simple Base Detail Mega-Rib simple Base with Concrete Notch Detail Mega-Rib Panel to Purlin Detail Mega-Rib Rake End (Off Module) Detail Mega-Rib Rake Start Detail Mega-Rib Ridge Detail Mega-Rib Base Detail Mega-Rib Head Detail Mega-Rib Jamb Detail Mega-Rib Outside Corner (Off Module) Detail Mega-Rib Outside Corner Detail Mega-Rib Panel to Girt Detail Mega-Rib Simple Base Detail Mega-Rib Simple Base with Concrete Notch Detail

      PDF Drawings

      Mega-Rib Eave Detail Mega-Rib Eave with Gutter Detail Mega-Rib End Lap Detail Mega-Rib Base Detail Mega-Rib Head Detail Mega-Rib High Eave Detail Mega-Rib Jamb Detail Mega-Rib Outside Corner Detail Mega-Rib Panel to Girt Detail Mega-Rib Simple Base Detail Mega-Rib simple Base with Concrete Notch Detail Mega-Rib Panel to Purlin Detail Mega-Rib Rake End (Off Module) Detail Mega-Rib Rake Start Detail Mega-Rib Ridge Detail Mega-Rib Base Detail Mega-Rib Head Detail Mega-Rib Jamb Detail Mega-Rib Outside Corner (Off Module) Detail Mega-Rib Outside Corner Detail Mega-Rib Panel to Girt Detail Mega-Rib Simple Base Detail Mega-Rib Simple Base with Concrete Notch Detail

      English Installation Manuals

      Mega-Rib Installation Manual Thru-Fastened Panel

      Brochures/Flyers

      Mega-Rib Flyer 2025 Product Catalog

      Metal Panel Care & Maintenance

      Operation and Maintenance Manual (Roofs) Operation and Maintenance Manual (Walls)

      Product Data Sheets

      Mega-Rib Product Data SikaLastomer® 511 Product Data

      Product & Trim Information Books

      Mega-Rib Product Information Book

      SDS - Substrate & Paint

      Galvalume® Substrate Paint - Almond Paint - Ash Gray  Paint - Bone White  Paint - Brandywine  Paint - Brite Red  Paint - Buckskin Paint - Champagne Metallic Paint - Charcoal  Paint - Colonial Red  Paint - Copper Penny  Paint - Dark Bronze Paint - Evergreen  Paint - Hartford Green  Paint - Home Depot Orange Paint - IHOP Blue Paint - Leadcoat Paint - Mansard Brown  Paint - Matte Black Paint - Medium Bronze Paint - Patina Green Paint - Patrician Bronze Paint - Preweathered Galvalume® Paint - Regal Blue Paint - Regal White Paint - Roman Blue Paint - Sandstone Paint - Silver Metallic Paint - Slate Gray Paint - Texas Silver Metallic Paint - White Backer  Paint Pens - Kynar® Paint Pens- Kynar® ADS Data

      Specifications

      Mega-Rib

      UL 580 Construction Numbers

      Mega-Rib #244 (open framing)

      Approvals

      Fire Resistance (UL263) Ratings Fire Resistance (UL790) Ratings Florida Product Approvals Non-Structural Florida Product Approvals Structural Impact Resistance (UL 2218) Class 4 Miami Dade Approvals

      ASTM E1592 Uplift Tests

      Mega Rib 24 Ga.

      Miami-Dade Notice of Acceptance (NOA)

      Mega-Rib NOA #23-0720.05

      Finish and Substrate Warranties

      Standard Galvalume® Standard Fluropon® Kynar 500® PVDF with Galvalume® Substrate Project Specific Galvalume® Project Specific Fluropon® Kynar 500® PVDF with Galvalume® Substrate

      Compare our Metal Panels Using the Tool Below

      For information on all McElroy Metal products, visit our full product library .

      Panel
      Seam Type
      Rib Height
      Panel Widths
      Minimum Slope
      Install Substrate
      Clips
      Substrate / Gauges
      Coating
      Notable Approvals / Tests
      Mega-Rib Exposed Fastened Wall & Roof
      Exposed Fastened Wall & Roof
      1 1/2"
      36"
      1:12 tape sealant required for all slopes
      Solid Deck or Open Framing
      N/A
      22 GA, 24 GA & 26 GA Galvalume®
      Kynar 500® (PVDF); Galvalume® or Zincalume Plus (acrylic-coated)
      UL 263 Class A; UL580 Class 90; ASTM E1680/E1646; UL 2218 Class 4; Florida Product Approval; Miami Dade; ASTM E1592; IAPMO UES Listing

      For information on all McElroy Metal products, visit our full product library .

      Panel
      Seam Type
      Rib Height
      Panel Widths
      Minimum Slope
      Install Substrate
      Clips
      Substrate / Gauges
      Coating
      Notable Approvals / Tests
      Mega-Rib Exposed Fastened Wall & Roof
      Exposed Fastened Wall & Roof
      1 1/2"
      36"
      1:12 tape sealant required for all slopes
      Solid Deck or Open Framing
      N/A
      22 GA, 24 GA & 26 GA Galvalume®
      Kynar 500® (PVDF); Galvalume® or Zincalume Plus (acrylic-coated)
      UL 263 Class A; UL580 Class 90; ASTM E1680/E1646; UL 2218 Class 4; Florida Product Approval; Miami Dade; ASTM E1592; IAPMO UES Listing
      Peachtree Solar-501-1

      Notes & Manufacturing Locations

      • Manufactured in: Clinton, IL; Peachtree City GA; Adelanto, CA; Sunnyvale, TX

      • Availability Notes:

        • Adelanto, CA:

          • Standard 26 GA coverage at Adelanto is 36".

          • Offers 26 GA & 29 GA in Zincalume Plus and some colors

          • Offers 22 GA in Zincalume Plus

        • Peachtree City, GA:

          • Offers Galvalume Plus 26 GA

        • Sunnyvale, TX:

          • Offers 26 Ga in bare Galvalume Plus and some colors

        • All locations except Adelanto, CA, standard 26 GA coverage is 28.8". Please specify if 36" coverage is required

      • Can be installed vertically or horizontally

      • Inquire for other gauges and substrates; minimum quantities may apply

      • Oil canning is a natural occurrence in metal panels and not a cause for rejection.

      McElroy Logo Emp Ownd Opt1_BLK-RED

      Why Choose McElroy Metal

      McElroy Metal is an employee-owned manufacturer with more than six decades of experience producing high-quality metal roofing, wall systems, and substructural components. Our nationwide manufacturing and service center network ensures consistent availability, responsive support, and dependable delivery. Built on a culture of craftsmanship and partnership, our products are engineered for long-term durability and trusted performance on projects of every size.

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      Find a Distributor / Contractor Near You

      Whether you’re building a new home or planning renovations, a metal roof can deliver long-term cost savings and comfort. To explore your options and find the product that meets your aesthetic and budgetary needs, contact a McElroy Metal distributor or contractor in your area today. We can’t wait to help make your dream home a reality.

      Find a Contractor

      Frequently Asked Questions

      The questions below address common considerations and help guide product selection for your project.

      Where is Mega-Rib most commonly used?
      Mega-Rib is ideal for large commercial, industrial, and post-frame buildings requiring exceptional strength and coverage.
      Can Mega-Rib be used for walls as well as roofs?
      Yes. Mega-Rib performs well on both roof and wall applications, providing a consistent appearance and durability across the entire building.
      What makes Mega-Rib different from other exposed fastener panels?
      Its 1½" deep rib profile offers greater spanning capability and strength, making it ideal for larger-scale projects.
      What finishes are available?
      Kynar 500® (PVDF) systems offer unparalleled resistance to color fade and chalk. Choose from SMP, or Kynar 500 paint systems to match project requirements and budgets. For non-painted applications, we offer Galvalume® Plus (acrylic-coated) in 24 gauge.
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