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Multi-Rib Panel

Multi-Rib Panel

Multi-Rib is McElroy’s proprietary version of the industry’s standard R-Panel and is a multi-use roof and wall rib panel primarily used in pre-engineered metal building applications. An optional purlin bearing leg (PBR) rests on purlins and provides support for fastening the panel lap.

Multi-Rib is also commonly utilized for residential roofing, primarily in the Southwestern region. Featuring 1 1/4-inch major ribs, 12 inches on center, Multi-Rib's bold profile adds a distinct beauty to any home.

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Factory Applied Anti-Condensation Membrane

Multi-Rib 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; Winchester, VA; Adelanto, CA; Merkel, TX
Note Multi-Rib is also available with MoistureLok
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 E1592 (26 GA PBR Only)
Air Infiltration ASTM E1680
Water Infiltration ASTM E1646
Class 4 Impact Resistance UL2218
Florida State Approval 1747.8, 1832.10
Fire Resistance UL263
Texas Department of Insurance Approval Evaluation RC-63 and RC-283
Testing Data For available Test Data, Section Properties or Load Tables, please visit our downloads section.
Panel Options
Panel Options 26 Ga: PBR and Non PBR. 24 & 22 Ga: Non PBR
Coating - Kynar 500® (PVDF)
- Silicone Modified Polyester (SMP)
Substrate - Standard 26 GA Galvalume®
- Optional 24, 22 GA Galvalume®

Related Files


English Installation Manuals

Spanish Installation Manuals

Good Design Practices

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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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Shop Drawing Service
Shop Drawing Service

Running short of time to complete your own shop drawings? McElroy Metal can help. Click the button below to provide us some basic information and we’ll be in touch soon to discuss your project specifics.

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Download Shop Drawings
Download Shop Drawings

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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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