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Product Approval Menu > Application Detail

FL #

FL42379-R3

Application Type

Revision

Code Version

2026

Application Status

Applied For

Comments

Archived

Product Manufacturer

Cornerstone Building Brands (Fortify, ABC, Ceco, MBCI, Metal Sales, Metallic, Mueller, Robertson, Star, Union)

Address/Phone/Email

5020 Weston Parkway
Cary, NC
(480) 529-5987
blake.rogers1@cornerstone-bb.com

Authorized Signature

Blake Rogers
blake.rogers1@cornerstone-bb.com

Technical Representative

Address/Phone/Email

Quality Assurance Representative

Address/Phone/Email

Category

Roofing

Subcategory

Metal Roofing

Compliance Method

Evaluation Report from a Florida Registered Architect or a Licensed Florida Professional Engineer
Evaluation Report - Hardcopy Received

Florida Engineer or Architect Name who developed the Evaluation Report

David Eng

Florida License

PE-81377

Quality Assurance Entity

UL LLC

Quality Assurance Contract Expiration Date

11/13/2026

Validated By

James R Wally, PE

Validation Checklist - Hardcopy Received

Certificate of Independence

FL42379_R3_COI_26-29ga RIB on 1x4 on Plywood or OSB.pdf

Referenced Standard and Year (of Standard)

Standard	Year
UL 580	2006

Equivalence of Product Standards
Certified By

Sections from the Code

Product Approval Method

Method 1 Option D

Date Submitted

10/03/2026

Date Validated

Summary of Products


FL #	Model, Number or Name	Description
42379.1	01: 29ga or 26ga (min) Rib on 1x4 subpurlins on plywood	29ga or 26ga (min) Rib panel on 1x4 (min) subpurlins on plywood or OSB.
Limits of Use Approved for use in HVHZ: No Approved for use outside HVHZ: Yes Impact Resistant: N/A Design Pressure: +N/A/-123.5 Other: See evaluation report for details. \| Approval may be used by any of the Cornerstone Building Brands entities, e.g. Fortify Building Solutions, American Building Components, Ceco Building Systems, MBCI, Metal Sales, Metallic Building Systems, Mueller, Robertson Building Systems, Star Building Systems, Union Corrugating, et al.		Installation Instructions FL42379_R3_II_26-29ga RIB on 1x4 on Plywood or OSB.pdf Verified By: David Eng, PE 81377 Created by Independent Third Party: Yes Evaluation Reports FL42379_R3_AE_26-29ga RIB on 1x4 on Plywood or OSB.pdf Created by Independent Third Party: Yes

42379.2	02: 29ga or 26ga (min) Rib on 15/32" Plywood or 19/32 (min) plywood or 7/16" (min) OSB	29ga or 26ga (min) Rib panel on 15/32" plywood or 19/32 (min) plywood or 7/16" (min) OSB
Limits of Use Approved for use in HVHZ: No Approved for use outside HVHZ: Yes Impact Resistant: N/A Design Pressure: +N/A/-146 Other: See evaluation report for details. \| Approval may be used by any of the Cornerstone Building Brands entities, e.g. Fortify Building Solutions, American Building Components, Ceco Building Systems, MBCI, Metal Sales, Metallic Building Systems, Mueller, Robertson Building Systems, Star Building Systems, Union Corrugating, et al.		Installation Instructions FL42379_R3_II_26-29ga RIB on Plywood or OSB.pdf Verified By: David Eng, PE 81377 Created by Independent Third Party: Yes Evaluation Reports FL42379_R3_AE_26-29ga RIB on Plywood or OSB.pdf Created by Independent Third Party: Yes

42379.3	03: 29ga (min) 5V on 15/32 (min) plywood or 7/16 (min) OSB	29ga (min) 5V on 15/32 (min) plywood or 7/16 (min) OSB
Limits of Use Approved for use in HVHZ: No Approved for use outside HVHZ: Yes Impact Resistant: N/A Design Pressure: +N/A/-52.5 Other: See evaluation report for details. \| Approval may be used by any of the Cornerstone Building Brands entities, e.g. Fortify Building Solutions, American Building Components, Ceco Building Systems, MBCI, Metal Sales, Metallic Building Systems, Mueller, Robertson Building Systems, Star Building Systems, Union Corrugating, et al.		Installation Instructions FL42379_R3_II_29ga 5V on Plywood or OSB.pdf Verified By: David Eng, PE 81377 Created by Independent Third Party: Yes Evaluation Reports FL42379_R3_AE_29ga 5V on Plywood or OSB.pdf Created by Independent Third Party: Yes

42379.4	04: 26ga (min) 5V on 15/32" or 19/32 (min) plywood	26ga (min) 5V on 15/32" or 19/32 (min) plywood
Limits of Use Approved for use in HVHZ: No Approved for use outside HVHZ: Yes Impact Resistant: N/A Design Pressure: +N/A/-169 Other: See evaluation report for details. \| Approval may be used by any of the Cornerstone Building Brands entities, e.g. Fortify Building Solutions, American Building Components, Ceco Building Systems, MBCI, Metal Sales, Metallic Building Systems, Mueller, Robertson Building Systems, Star Building Systems, Union Corrugating, et al.		Installation Instructions FL42379_R3_II_26ga 5V on Plywood.pdf Verified By: David Eng, PE 81377 Created by Independent Third Party: Yes Evaluation Reports FL42379_R3_AE_26ga 5V on Plywood.pdf Created by Independent Third Party: Yes

42379.5	05: 26ga or 24ga (min) PBR on 15/32 (min) plywood	26ga or 24ga (min) PBR on 15/32 (min) plywood
Limits of Use Approved for use in HVHZ: No Approved for use outside HVHZ: Yes Impact Resistant: N/A Design Pressure: +N/A/-161.5 Other: See evaluation report for details. \| Approval may be used by any of the Cornerstone Building Brands entities, e.g. Fortify Building Solutions, American Building Components, Ceco Building Systems, MBCI, Metal Sales, Metallic Building Systems, Mueller, Robertson Building Systems, Star Building Systems, Union Corrugating, et al.		Installation Instructions FL42379_R3_II_24-26ga PBR on Plywood.pdf Verified By: David Eng, PE 81377 Created by Independent Third Party: Yes Evaluation Reports FL42379_R3_AE_24-26ga PBR on Plywood.pdf Created by Independent Third Party: Yes

42379.6	06: 26ga (min) 2.5 Corrugated on 19/32 (min) plywood	26ga (min) 2.5 Corrugated panel with nominal 1/2" rib height on 19/32 (min) plywood
Limits of Use Approved for use in HVHZ: No Approved for use outside HVHZ: Yes Impact Resistant: N/A Design Pressure: +N/A/-129.25 Other: See evaluation report for details. \| Approval may be used by any of the Cornerstone Building Brands entities, e.g. Fortify Building Solutions, American Building Components, Ceco Building Systems, MBCI, Metal Sales, Metallic Building Systems, Mueller, Robertson Building Systems, Star Building Systems, Union Corrugating, et al.		Installation Instructions FL42379_R3_II_26ga 250 COR on Plywood.pdf Verified By: David Eng, PE 81377 Created by Independent Third Party: Yes Evaluation Reports FL42379_R3_AE_26ga 250 COR on Plywood.pdf Created by Independent Third Party: Yes

42379.7	07: 26ga or 24ga (min) PBC on 15/32 (min) plywood or 7/16" (min) OSB	26ga or 24ga (min) PBC corrugated panel with nominal 7/8" rib height on 15/32 (min) plywood or 7/16" (min) OSB
Limits of Use Approved for use in HVHZ: No Approved for use outside HVHZ: Yes Impact Resistant: N/A Design Pressure: +N/A/-177.1 Other: See evaluation report for details. \| Approval may be used by any of the Cornerstone Building Brands entities, e.g. Fortify Building Solutions, American Building Components, Ceco Building Systems, MBCI, Metal Sales, Metallic Building Systems, Mueller, Robertson Building Systems, Star Building Systems, Union Corrugating, et al.		Installation Instructions FL42379_R3_II_24-26ga COR on Plywood or OSB.pdf Verified By: David Eng, PE 81377 Created by Independent Third Party: Yes Evaluation Reports FL42379_R3_AE_24-26ga COR on Plywood or OSB.pdf Created by Independent Third Party: Yes

42379.8	08: 032 aluminum PBC on 15/32 (min) plywood	Nominally 0.032 aluminum or thicker PBC corrugated panel with nominal 7/8" rib height on 15/32 (min) plywood
Limits of Use Approved for use in HVHZ: No Approved for use outside HVHZ: Yes Impact Resistant: N/A Design Pressure: +N/A/-164.6 Other: See evaluation report for details. \| Approval may be used by any of the Cornerstone Building Brands entities, e.g. Fortify Building Solutions, American Building Components, Ceco Building Systems, MBCI, Metal Sales, Metallic Building Systems, Mueller, Robertson Building Systems, Star Building Systems, Union Corrugating, et al.		Installation Instructions FL42379_R3_II_032 COR on Plywood.pdf Verified By: David Eng, PE 81377 Created by Independent Third Party: Yes Evaluation Reports FL42379_R3_AE_032 COR on Plywood.pdf Created by Independent Third Party: Yes

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