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Product Approval Menu > Hot Topics > Application Detail

FL #

FL42380-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

FL42380_R3_COI_26ga PermaLok on Plywood.pdf

Referenced Standard and Year (of Standard)

Standard	Year
TAS 100	2023
TAS 125	2003
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
42380.1	01: Steel PermaLok on plywood	26ga (min) PermaLok 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/-63.5 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 FL42380_R3_II_26ga PermaLok on Plywood.pdf Verified By: David Eng, PE 81377 Created by Independent Third Party: Yes Evaluation Reports FL42380_R3_AE_26ga PermaLok on Plywood.pdf Created by Independent Third Party: Yes

42380.2	02: Aluminum PermaLok on plywood	Nominally 0.032 aluminum or thicker PermaLok 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/-78.5 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 FL42380_R3_II_032 PermaLok on Plywood.pdf Verified By: David Eng, PE 81377 Created by Independent Third Party: Yes Evaluation Reports FL42380_R3_AE_032 PermaLok on Plywood.pdf Created by Independent Third Party: Yes

42380.3	03: Steel nailstrip on plywood or OSB	26ga (min) nailstrip on 15/32" (min) plywood or 7/16" (min) OSB or 3/4 wood plank
Limits of Use Approved for use in HVHZ: No Approved for use outside HVHZ: Yes Impact Resistant: N/A Design Pressure: +N/A/-131.5 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 FL42380_R3_II_26ga Nailstrip on Plywood.pdf Verified By: David Eng, PE 81377 Created by Independent Third Party: Yes Evaluation Reports FL42380_R3_AE_26ga Nailstrip on Plywood.pdf Created by Independent Third Party: Yes

42380.4	04: Aluminum nailstrip on plywood or OSB	Nominally 0.032" or thicker aluminum nailstrip on 15/32" (min) plywood or 7/16" (min) OSB or 3/4 wood plank
Limits of Use Approved for use in HVHZ: No Approved for use outside HVHZ: Yes Impact Resistant: N/A Design Pressure: +N/A/-93.5 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 FL42380_R3_II_032 Nailstrip on Plywood.pdf Verified By: David Eng, PE 81377 Created by Independent Third Party: Yes Evaluation Reports FL42380_R3_AE_032 Nailstrip on Plywood.pdf Created by Independent Third Party: Yes

42380.5	05: Steel Slimline/SL-16 on plywood	26ga (min) Slimline/SL-16 on 15/32" (min) plywood or 3/4" wood plank
Limits of Use Approved for use in HVHZ: Yes Approved for use outside HVHZ: Yes Impact Resistant: N/A Design Pressure: +N/A/-108.5 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 FL42380_R3_II_26ga Slimline SL16 on Plywood HVHZ.pdf Verified By: David Eng, PE 81377 Created by Independent Third Party: Yes Evaluation Reports FL42380_R3_AE_26ga Slimline SL16 on Plywood HVHZ.pdf Created by Independent Third Party: Yes

42380.6	06: Steel SL-150 on plywood	24ga (min) SL-150 on 15/32" (min) plywood or 3/4" wood plank
Limits of Use Approved for use in HVHZ: Yes Approved for use outside HVHZ: Yes Impact Resistant: N/A Design Pressure: +N/A/-116 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 FL42380_R3_II_24ga SL150 on Plywood.pdf Verified By: David Eng, PE 81377 Created by Independent Third Party: Yes Evaluation Reports FL42380_R3_AE_24ga SL150 on Plywood.pdf Created by Independent Third Party: Yes

42380.7	07: Steel SL-150 on steel deck	24ga (min) SL-150 on 22ga (min) steel B-deck or similar
Limits of Use Approved for use in HVHZ: Yes Approved for use outside HVHZ: Yes Impact Resistant: N/A Design Pressure: +N/A/-97 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 FL42380_R3_II_24ga SL150 on 22ga Deck.pdf Verified By: David Eng, PE 81377 Created by Independent Third Party: Yes Evaluation Reports FL42380_R3_AE_24ga SL150 on 22ga Deck.pdf Created by Independent Third Party: Yes

42380.8	08: Aluminum SL-150 on plywood or OSB	Nominally 0.032" aluminum or thicker SL-150 on 15/32" (min) plywood, 7/16" (min) OSB, or 3/4" wood plank
Limits of Use Approved for use in HVHZ: No Approved for use outside HVHZ: Yes Impact Resistant: N/A Design Pressure: +N/A/-86 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 FL42380_R3_II_032 SL150 on Plywood.pdf Verified By: David Eng, PE 81377 Created by Independent Third Party: Yes Evaluation Reports FL42380_R3_AE_032 SL150 on Plywood.pdf Created by Independent Third Party: Yes

42380.9	09: Steel SL-175 on plywood	24ga (min) SL-175 on 15/32" (min) plywood or 3/4" wood plank
Limits of Use Approved for use in HVHZ: No Approved for use outside HVHZ: Yes Impact Resistant: N/A Design Pressure: +N/A/-93.5 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 FL42380_R3_II_24ga SL175 on Plywood.pdf Verified By: David Eng, PE 81377 Created by Independent Third Party: Yes Evaluation Reports FL42380_R3_AE_24ga SL175 on Plywood.pdf Created by Independent Third Party: Yes

42380.10	10: Steel SL-175 on steel deck	24ga (min) SL-175 on 22ga (min) steel B-deck or similar
Limits of Use Approved for use in HVHZ: No Approved for use outside HVHZ: Yes Impact Resistant: N/A Design Pressure: +N/A/-86 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 FL42380_R3_II_24ga SL175 on 22ga Deck.pdf Verified By: David Eng, PE 81377 Created by Independent Third Party: Yes Evaluation Reports FL42380_R3_AE_24ga SL175 on 22ga Deck.pdf Created by Independent Third Party: Yes

42380.11	11: Aluminum SL-175 on plywood	Nominally 0.032" aluminum or thicker SL-175 on 15/32" (min) plywood or 3/4" wood plank
Limits of Use Approved for use in HVHZ: No Approved for use outside HVHZ: Yes Impact Resistant: N/A Design Pressure: +N/A/-93.5 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 FL42380_R3_II_032 SL175 on Plywood.pdf Verified By: David Eng, PE 81377 Created by Independent Third Party: Yes Evaluation Reports FL42380_R3_AE_032 SL175 on Plywood.pdf Created by Independent Third Party: Yes

42380.12	12: Steel Secure Seam on plywood	24ga (min) Secure Seam on 15/32" (min) plywood or 3/4" wood plank
Limits of Use Approved for use in HVHZ: No Approved for use outside HVHZ: Yes Impact Resistant: N/A Design Pressure: +N/A/-101 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 FL42380_R3_II_24ga SecureSeam on Plywood.pdf Verified By: David Eng, PE 81377 Created by Independent Third Party: Yes Evaluation Reports FL42380_R3_AE_24ga SecureSeam on Plywood.pdf Created by Independent Third Party: Yes

42380.13	13: Steel Secure Seam on wood purlins on plywood	24ga (min) Secure Seam on wood purlins (min 1x4) on 15/32" (min) plywood or 3/4" wood plank
Limits of Use Approved for use in HVHZ: Yes Approved for use outside HVHZ: Yes Impact Resistant: N/A Design Pressure: +N/A/-101 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 FL42380_R3_II_24ga SecureSeam on 1x4s on Plywood HVHZ.pdf Verified By: David Eng, PE 81377 Created by Independent Third Party: Yes Evaluation Reports FL42380_R3_AE_24ga SecureSeam on 1x4s on Plywood HVHZ.pdf Created by Independent Third Party: Yes

42380.14	14: Aluminum Secure Seam on plywood	Nominally 0.032" aluminum or thicker Secure Seam on 15/32" (min) plywood or 3/4" wood plank
Limits of Use Approved for use in HVHZ: No Approved for use outside HVHZ: Yes Impact Resistant: N/A Design Pressure: +N/A/-93.5 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 FL42380_R3_II_032 SecureSeam on Plywood.pdf Verified By: David Eng, PE 81377 Created by Independent Third Party: Yes Evaluation Reports FL42380_R3_AE_032 SecureSeam on Plywood.pdf Created by Independent Third Party: Yes

42380.15	15: Steel LokSeam on plywood	24ga (min) LokSeam on 15/32" (min) plywood or 3/4" wood plank
Limits of Use Approved for use in HVHZ: No Approved for use outside HVHZ: Yes Impact Resistant: N/A Design Pressure: +N/A/-101 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 FL42380_R3_II_24ga LokSeam on Plywood.pdf Verified By: David Eng, PE 81377 Created by Independent Third Party: Yes Evaluation Reports FL42380_R3_AE_24ga LokSeam on Plywood.pdf Created by Independent Third Party: Yes

42380.16	16: Steel LokSeam on steel deck	24ga (min) LokSeam on 22ga (min) steel B-deck or similar
Limits of Use Approved for use in HVHZ: No Approved for use outside HVHZ: Yes Impact Resistant: N/A Design Pressure: +N/A/-153.5 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 FL42380_R3_II_24ga LokSeam on 22ga Deck.pdf Verified By: David Eng, PE 81377 Created by Independent Third Party: Yes Evaluation Reports FL42380_R3_AE_24ga LokSeam on 22ga Deck.pdf Created by Independent Third Party: Yes

42380.17	17: Steel LokSeam on plywood	24ga (min) LokSeam on 19/32" (min) plywood or 3/4" wood plank
Limits of Use Approved for use in HVHZ: Yes Approved for use outside HVHZ: Yes Impact Resistant: N/A Design Pressure: +N/A/-93.5 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 FL42380_R3_II_24ga LokSeam on Plywood HVHZ.pdf Verified By: David Eng, PE 81377 Created by Independent Third Party: Yes Evaluation Reports FL42380_R3_AE_24ga LokSeam on Plywood HVHZ.pdf Created by Independent Third Party: Yes

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