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Bare Steel
Western Rib® (7.2 Panel)
Bare Cold Rolled Rusted Roofing

Material does not arrive pre-rusted. Panel will rust naturally with exposure to the weather.
  • Product Data


    Material Type:
    Western Rib® (7.2 Panel)

    Rib Distance (Pitch)

    Rib Height:

    Coverage for Roof and Wall Applications:

    Available Gauges:
    A606-4 (aka Corten)

    Bare Cold Rolled
    20, 22, 24

    A606-4 (aka Corten)
    Bare Cold Rolled


    Panel Length:
    1' to 52'

    Recommended Minimum Roof Slope:

    Installation over a solid substrate.
    Use a high temperature roofing underlayment.
    Bead mastic on the overlap if used for a roofing application.

  • Product Specifications
  • Install Guide

    Install Guide for Download

    For more detailed information, please feel free to download the additional documentation below.

    Install Guide - Western Rib® Metal Panels
  • Trim/Flashings

    Trim and Flashings

    Please click here to see available trim and flashings for this product.
  • Screw Placement & Panel Sidelap

    Screw Placement & Panel Sidelap

    Please click here to download the screw placement and panel sidelap file.
  • FAQ

    Frequently Asked Questions

    For a list of frequently asked questions about this product and more, please click here.
  • Warranty


    There is NO Warranty for A606-4 and bare cold rolled steel products. If you need a warranty than please look at our painted rusted roofing options.
  • Engineering Info

    Engineering Info

    A606-4 and bare cold rolled steel are architectural products only. Load charts, uplift, and engineering is NOT available for these finishes. The load that it carries when you install the product is not the load it will carry in the future as it rust.
  • CAD

    CAD Drawings for Download

  • Product Data Sheet

    Product Data Sheet

    Please click here to download the product data sheet.
  • Request a Quote

Western Rib®
Bare Steel

Architecture, as any compositional art, makes extensive use of symmetry and it’s no mystery why architects prefer using our bare steel Western Rib panels for their projects. The 7.2-inch on center spacing between ribs is aesthetically pleasing and offers symmetrical balance to architectural projects which require a design that compliments the subject of their work – making it an excellent choice for contemporary design applications.

Our 7.2” bare steel exposed fastener panels are ideal for commercial and industrial applications but also work exceptionally well on both parapet walls and facades. With wider coverage and fewer panels to install, the Western Rib trapezoidal design also provides superior load and span capacities, saving money in structural support. Add fiberglass panels to match the profile of the metal panels as decorative accents or to transition smoothly from steel to skylight.


  • 22 Gauge Minimum
  • 1.5” Deep and 7.2” Pitch. The strongest Corten panel that we sell.
  • 36” Coverage means fewer panels to handle and install, saving time and money. There is no loss of material for the panel side lap.
  • Bare Western Rib panel has a unique look and naturally oxidizing finish that make it especially desirable for many architectural projects.
  • Matching trim and flat stock available for bare Western Rib.
  • Galvanized or stainless steel screws in a Koko Brown color are available to match bare steel finish.
  • Fiberglass skylight panels are available to match the profile of this panel.

Recommendations and Cautions

  • Bare Steel and A606-4 performs best in environments with low humidity
  • Load calculations and load tables DO NOT APPLY TO ANY BARE STEEL OR A606-4 PRODUCT.
  • Installation over a solid substrate.
  • Minimum roof slope 3:12 recommended.
  • Underlayment should be a HIGH TEMPERATURE UNDERLAYMENT.
  • Not recommended near salt spray environments and frequent rain locations as it will shorten the life expectancy of the products.
  • Acid washing will degrade steel performance.
  • Rust runoff will likely stain the surrounding surfaces.
  • Material does not arrive pre-rusted. Panel will rust naturally with exposure to the weather.

Ordering Information

Excellent customer service is important to us. When you place your order with Western States Metal Roofing you can expect the following:
  • Knowledgeable Sales Associates - Helpful and friendly sales associates that will answer all of your questions.
  • Made to Order Panels - We cut your metal roofing and metal siding panels to the exact lengths needed.
  • Fast Turnaround - Typical two week maximum lead times. However, if you need it quicker, we normally can accommodate just about any completion schedule.
  • Shipping Convenience - We have route trucks that service anywhere in the USA and Canada.
  • Affordable Shipping - Immediate and inexpensive shipping.

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