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" major ribs, 12 inches on center, Multi-Rib's bold profile adds a distinct beauty to any home.

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Great for

Walls

Walls

Roofs

Roofs

Residential

Residential

Commercial

Commercial

Specifications & Details

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
Testing
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

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Specifications

Good Design Practices

Technical Bulletins / ASTM E1592 Uplift Tests

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General Product and Warranty Information

Panel Load Tables w/Section Properties and Testing

Safety Data and Material Safety Data Sheets

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FAQs

Unlike asphalt shingles, which need to be replaced every 12-20 years, metal roofing can last up to 60 years with very little need for maintenance. For many homeowners, a metal roof is a true “one and done” solution they won’t have to worry about replacing in the future.

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Metal roofing actually reflects much of the sun’s heat and energy. While conventional shingles absorb much of the sun’s heat, metal roofing can actually reduce cooling energy costs by as much as 20%. That’s because the coating used on modern metal roof panels incorporates special pigments that reflect the sun’s energy and release heat that is absorbed throughout the day.

The odds of a lightning strike hitting a metal roof are the same as any other roof, regardless of material. In the event that there is a lightning strike, however, metal roofing will not ignite and catch fire since it is not combustible.

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Far from it. Studies conducted by the Insurance Institute for Business & Home Safety (IBHS) have found that metal roofing is far less likely to be punctured by hail than conventional asphalt shingles, withstanding even golf ball-sized hailstones with only cosmetic damage.

Metal roofing consistently outperforms shingles when it comes to resisting harsh elements. In addition to being fire and hail resistant, metal roofs are also effective against extreme winds. Many insurance companies recognize the durability of metal roofing, offering discounts for structures with metal roofs.

A class 4 roof is an impact-resistant roof and will perform will when exposed to hail.

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Get our best tips and tricks for how to measure a roof for metal roofing.

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Metal roofing is an energy efficient, environmentally friendly roofing material that offers cost savings and a long lifespan.

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It is safe to walk on a metal roof. Get answers to the most common questions about how to walk on metal roof tiles.

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Yes! Get four reasons why they are.

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Asphalt saturated, roofing-tar paper, or synthetic?

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Yes! Solar panels and metal roofing are a great match!

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Oil canning is something you see when a metal panel appears wavy or distorted.

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Yes! Installing metal roofing over existing shingles is an excellent way for building owners to not only maximize the longevity of their new roof but also to save on roof tear off expenses.

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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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