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Purlin Bearing Rib

Structural R Panel for R Panel Metal Roof & Siding Systems

Bridger Steel's Purlin Bearing Rib (PBR) Panel is an exposed fastener R metal panel suitable for residential, commercial, and agricultural applications. The R metal panel can be used in both interior and exterior applications, including R Panel Metal Roof and Siding applications.

This structural steel panel works well for roofing or siding on the exterior of a building or home, and as an accent wall on the interior. You can create a modern look with the R metal panel, or a rustic look depending on the color or finish you choose. You'll love the high-performing characteristics of R Metal Panels and how they'll hold up to even the toughest environments.

The PBR steel panel features a 5 degree overbend on overlap combined with an anti-siphon groove on underlap for superior weather tightness. From high-speed winds to heavy rain, the R panel will keep you dry.

When it come to harsh weather, the Steel R panel roofing will easily stand up to tough elements. The R Panel has strength and adaptability, making it a highly sought after for homeowners, contractors, and architects alike. Whether you're using the R panel for an R Panel Metal Roof or siding, you'll love the longevity of these metal sheets.

Examples of Use

22 Gauge Colors
24 Gauge Colors

Panel Color Options

26 Gauge Colors

Panel Profile

PBR cropped


Product Applications

Metal Roofing, Siding and Accents

Suitable for regions prone to hail.
Suitable for regions prone to high snow volume.
Suitable for regions prone to high winds.
Suitable for regions prone to extreme temperatures.
Suitable for low pitch conditions.
Suitable for Solar Panel mounting.
Available in Cool Roof certified colors.
Suitable for Rainwater Harvesting.
Can be installed over an open purlin system or a solid substrate.
If used for a roofing application, use bead mastic on the overlap.
A quality high temperature, ice and water underlayment on all roofing applications is recommended.

For the architect, builder, or general information regarding building examples shown with this steel R panel, please contact marketing@bridgersteel.com. Bridger Steel does not release personal information or locations of projects due to owner privacy.
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Product Details
Panel Overlap

PBR Install

5 Degree Overbend: Ensures tight overlap between panels

Anti-Siphon Groove: Creates an internal air gap at R panel overlap to help prevent water intrusion. 

Underlayment: High Temp Ice & Water shown. For use at eaves and valleys.

Substrate: Plywood substrate material shown. R Panel Metal can be installed over open framing with max span width of 60"

Recommended Environments
  • High Wind Environments (ASTM E1592)
  • High Snow Volume
  • Extreme Temperatures (Select Colors)
Finished Coverage
  • 36"
Panel Gauges
  • 24 Ga.
  • 26 Ga.

What are Gauges?

Fastener Options
Panel Length
  • 3' to 43'
  • Longer lengths available. Contact your Product Specialist. 
Rib Height
  • 1.25" at 12" Centers
Recommended Roof Slope
  • Minimum 1:12 or Greater with Mastic
Available Paint Warranties

Warranties are based on paint systems. Contact a Bridger Steel team member for R Panel warranty options. 


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