M-Cor Exposed Fastened Metal Roof & Wall Panel

Shallow-Rib Corrugated Metal Panel for Roof and Wall Applications

McElroy Metal’s M-Cor is a low-profile corrugated exposed fastener panel that delivers the classic look of traditional corrugated metal with a lighter, more refined appearance. Featuring closely spaced ½" ribs, M-Cor provides smooth texture and subtle shadow lines ideal for roof, wall, and interior applications.

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Color Charts

Great for:

WALLS

ROOFS

RESIDENTIAL

COMMERCIAL

M-Cor Exposed Fastened Metal Roof & Wall 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

Exposed Fastener Corrugated Metal Roof & Wall Panel

1/2”

2.67”

34.67"

Up to 50' (varies by manufacturing facility)

26 GA Galvalume®

Solid Deck or Open Framing

Kynar 500® (PVDF) & Silicone Modified Polyester (SMP); Galvalume® Plus (acrylic-coated)

1:12 Sealant required on all slopes

M-Cor Ideal Applications

Residential, agricultural, and light commercial roof and wall systems.
Interior walls, ceilings, and architectural accents featuring corrugated styling.
Retrofit and new construction projects requiring lightweight strength and design flexibility.
Utility and outbuildings where value and weather protection are priorities.

See 3D Textures Here

M-Cor Top 3 Benefits

Classic Corrugated Design, Lower Profile: ½" ribs provide the traditional corrugated look with a softer, more refined texture suitable for smaller structures and interior spaces.
Lightweight and Easy to Install: Panels attach with exposed fasteners for quick installation and simple maintenance.
Durable Finishes and Long-Term Protection: Available in Galvalume®, Kynar 500® (PVDF) finishes for superior fade, chalk, and corrosion resistance and Silicone Modified Polyester (SMP) finishes for budget conscious projects with lower performance expectations.

Choose a Document Type

Color Charts
Drawing Files
Installation
Literature
Maintenance
Product Info
SDS - Substrate & Paint
Specifications
Submittals
Technical Bulletins
Warranties

Color Charts

Multi-Rib, R-Panel, U-Panel, Multi-Cor, M-Cor, Mini-Rib and Multi-V Color Chart Standard Color Chart

CAD Drawings

Multi-Cor/M-Cor Base Detail Multi-Cor/M-Cor Eave Detail Multi-Cor/M-Cor Eave with Gutter Detail Multi-Cor/M-Cor End Lap Detail Multi-Cor/M-Cor Head Detail Multi-Cor/M-Cor High Eave Detail Multi-Cor/M-Cor Hi-Side Tie-In Detail Multi-Cor/M-Cor Jamb Detail Multi-Cor/M-Cor Outside Corner Detail Multi-Cor/M-Cor Panel To Purlin Detail Multi-Cor/M-Cor Rake Detail Multi-Cor/M-Cor Rake Tie-In Detail Multi-Cor/M-Cor Ridge Detail Multi-Cor/M-Cor Simple Base Detail Multi-Cor/M-Cor Wainscoat Detail Multi-Cor/M-Cor Wall Panel to Girt Detail

PDF Drawings

English Installation Manuals

Multi-Cor/M-Cor Installation Manual Thru-Fastened Panel

Brochures/Flyers

2025 Product Catalog

Metal Panel Care & Maintenance

Operation and Maintenance Manual (Walls)

Product Data Sheets

M-Cor Product Data SikaLastomer^® 511 Product Data

Product & Trim Information Books

Multi-Rib/Multi-V/R-Panel/Multi-Cor/M-Cor/U-Panel/Mini-Rib PI Book

SDS - Substrate & Paint

Galvalume^® Substrate Paint - Ash Gray Paint - Autumn Red Paint - Brandywine Paint - Charcoal Paint - Clay Paint - Evergreen Paint - Hartford Green Paint - Ivory Paint - Light Stone Paint - Matte Black Paint - Patrician Bronze Paint - Regal White Paint - Roman Blue Paint - Surrey Beige Paint - Terratone Paint - Tudor Brown Paint - White Backer Paint Pens - Kynar^® Paint Pens- Kynar^® ADS Data

Specifications

M-Cor

M - Cor

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Approvals

Impact Resistance (UL 2218) Class 4

Finish and Substrate Warranties

Standard Galvalume^® Standard Silicone Modified Polyester (SMP) & Crinkle Finish with Galvalume^® Substrate Standard Fluropon^® Kynar 500^® PVDF with Galvalume^® Substrate Project Specific Galvalume^® Project Specific Fluropon^® Kynar 500^® PVDF with Galvalume^® Substrate Project Specific Silicone Modified Polyester (SMP) & Crinkle Finish with Galvalume^® Substrate

Compare our Metal Panels Using the Tool Below

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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

M-Cor Exposed Fastened Metal Roof & Wall Panel

Exposed Fastened Wall & Roof

1/2”

34.67"

1:12 Sealant required on all slopes

Solid Deck or Open Framing

N/A

26 GA Galvalume®

Kynar 500® (PVDF) & Silicone Modified Polyester (SMP); Galvalume® Plus (acrylic-coated)

UL 263 Class A; UL580 Class 90; ASTM E1680/E1646; UL 2218 Class 4;

Choose a panel to compare to M-Cor Exposed Fastened Metal Roof & Wall Panel

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

M-Cor Exposed Fastened Metal Roof & Wall Panel

Exposed Fastened Wall & Roof

1/2”

34.67"

1:12 Sealant required on all slopes

Solid Deck or Open Framing

N/A

26 GA Galvalume®

Kynar 500® (PVDF) & Silicone Modified Polyester (SMP); Galvalume® Plus (acrylic-coated)

UL 263 Class A; UL580 Class 90; ASTM E1680/E1646; UL 2218 Class 4;

Choose a panel to compare to M-Cor Exposed Fastened Metal Roof & Wall Panel

Components Gallery

M-Cor

M-Cor Wall Lap Narrow Coil

M-Cor

M-Cor Wall Lap Narrow Coil

Notes & Manufacturing Locations

Manufactured in: Bossier City, LA
Additional Material Options: (Note: Minimum quantity and additional lead-time may apply)
- 29 GA Galvalume®
- 24 GA Galvalume®
Oil canning is a natural occurrence in metal panels and not a cause for rejection.

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.

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.

Frequently Asked Questions

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

What makes M-Cor different from Multi-Cor?

M-Cor features a shallower ½" corrugation pattern, offering a smoother appearance and making it ideal for smaller buildings or interior design use.

Can M-Cor be used indoors?

Yes. M-Cor’s lighter profile and refined texture make it a popular choice for interior walls, ceilings, and decorative applications.

What finishes are available?

M-Cor is available in Kynar 500® (PVDF) for superior color and weather resistance and Silicone Modified Polyester (SMP) for budget conscious projects. For non-painted applications, we offer Galvalume® Plus (acrylic-coated).

What slope is recommended for roof installations?

A minimum slope of 3:12 is recommended for proper drainage.

M-Cor Exposed Fastened Metal Roof & Wall Panel

Renderings & Profiles