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R-Panel is a multi-use wall and roof panel used primarily in pre-engineered metal building applications. R-Panel is also a popular choice for residential metal roofing, especially in the Southwest. An optional purlin bearing leg (PBR) rests on purlins and provides support for fastening the panel lap.  Fade and Chalk resistant Kynar 500 (PVDF) coatings are a McElroy Metal standard for R-Panel and provide building owners with a long-term, high performing panel that retains its original color and beauty year after year.

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Requirements for R-Panel Walls and Roofs

To ensure performance across varying applications, McElroy Metal's R-Panel has been thoroughly tested. R-panel wall and roof panels feature a Class A fire rating under UL 790 (ASTM E108 and NFPA 256) procedures. Other R-Panel testing and classifications includes UL 580 Class 90 Uplift testing, ASTM E1680 air infiltration, ASTM E1646  water infiltration,  and UL2218 Class 4 impact resistance.

R-Panel also has Florida State Approval 1747.9 and 1832.11, Miami Dade Approval (PBR only) and Texas Department of Insurance Approval RC-284 (PBR only).

Installation of R-panel roofs requires a minimum slope of 1:12 and butyl sealant should be utilized in the laps. 


A Variety of Options

Because R-Panel is very versatile and utilized on a wide variety of applications, it is available in many options. R-Panel is available with and without purlin bearing legs (PBR). Typically, PBR panels are utilized on roof applications because roofers appreciate the extra support when installing the panels to the roof substrate, or deck. Non PBR panels are more common for wall applications.  Building owners can select R-Panel in wide range of Kynar 500® colors, or silicone-modified polyester coatings. R-Panel's most popular steel substrate is 26 GA Galvalume®. Or select optional 22- or 24-gauge Galvalume® panels.

Factory Applied Anti-Condensation Membrane

R Panel roof panels with McElroy's MoistureLok, offer a great option to address condensation challenges.  The design of our MoistureLok product traps moisture and then releases it back into the air as natural humidity once conditions go back below the dew point. 

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Specifications & Details

Minimum slope (with sealant) 1:12
Manufacturing Facilities Bossier City, LA; Clinton, IL; Ashburn, GA; Sunnyvale, TX; Diamond, MO
Note Oil Canning is a natural occurrence in metal panels and is not a cause for panel rejection
Fire Rating Class A
Uplift Test UL580 Class 90; ASTM E 1592 (24 Ga. PBR)
Air Infiltration ASTM E1680
Water Infiltration ASTM E1646
Class 4 Impact Resistance UL2218
Static Water FM 4471 Appendix G (24 GA PBR only)
Florida State Approval 1747.9, 1832.11
Fire Resistance UL263
Miami Dade Approval
Texas Department of Insurance Approval RC-284 (PBR Only)
Testing Data For available Test Data, Section Properties or Load Tables, please visit our downloads section.
Panel Options
Roof panels purlin bearing leg required
Wall panels non-purlin bearing leg optional
Coating - Kynar 500® (PVDF)
- Silicone Modified Polyester (SMP)
Substrate - Standard 26 GA Galvalume® (roof and wall panels)
- Optional 24, 22 GA Galvalume (wall panels only)

Get More Information

To ensure you have all the information you need before making a purchasing decision, we’ve provided a series of downloadable files related to R-panel walls and roofs below. These downloads allow you to access more information related to test data, section properties, load tables and much more.

Don’t see the information you need? You can always reach out to us directly. One of our customer service representatives can provide any additional information you may require.

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Related Files


English Installation Manuals

Spanish Installation Manuals

Technical Bulletins / UL 580 Construction Numbers

Technical Bulletins / Miscellaneous Information

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General Product and Warranty Information

Panel Load Tables w/Section Properties and Testing

Safety Data and Material Safety Data Sheets


Samples & Color Charts

Request physical samples and color charts. All items will be sent out via UPS ground unless otherwise specified.

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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.

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