Multi-Cor & M-Cor

While quickly communicating their high-strength performance attributes, McElroy’s corrugated metal panels are reminiscent of yester-year and simpler times. Consistent, rounded corrugations make Multi-Cor and M-Cor ideal panels to achieve nostalgic appeal whether installed as a wall, roof or interior accent panel. For added aesthetic appeal, horizontal installations showcase corrugated design capabilities. Multi-Cor and M-Cor are similar in design, with M-Cor offering a more subtle rib height and configuration.


  • Minimum slope: 1:12
  • Tape Sealant required on all slopes
  • Can be installed over solid deck or open framing

  • Multi-Cor and M-Cor are produced in
    Bossier City, LA

  • Oil Canning is a natural occurrence in metal panels and is not a cause for panel rejection

Testing Data

  • Fire Rating: Class A
  • Uplift Test: UL580 Class 90
    (Multi-Cor only)
  • Class 4 Impact Resistance: UL2218
  • Florida State Approval: 10680.1
    (Multi-Cor only)
  • Texas Department of Insurance Approval: Evaluation RC-158
    (Multi-Cor only)

  • For any available Test Data, Section Properties or Load Tables, please visit our downloads section

Panel Options

  • Coating:
    - Kynar 500® (PVDF)
    - Silicone Modified Polyester (SMP)
  • Substrate:
    - Standard 26 GA Galvalume®
    - Optional 24, 22, GA Galvalume
    - Optional 29, 24 GA Galvalume