Galvalume_Metal_Roof_Spec_Final_Clean.pdf
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- Attached to
- B2108 Shed Building Bill of Materials
- Solicitation number
- W50S82-25-Q-18WZ
About this file
This document is a technical specification for corrugated Galvalume metal roof panels, detailing comprehensive requirements for installation, materials, and performance standards. The specification covers Galvalume steel sheet panels with AZ55 coating, minimum 28-gauge thickness, corrugated profile with 7/8" rib height, and approximately 36" width coverage, designed to meet Class A fire rating per UL 790. Fastener specifications include self-tapping hex head screws with integrated EPDM rubber washers, corrosion-resistant carbon steel with specific spacing requirements at side laps and panel ends.
The specification provides detailed installation guidelines emphasizing manufacturer instructions, proper panel alignment, corrugation overlap, and use of closure strips and sealants. Warranty terms include a minimum 20-year manufacturer's warranty on material and coating and a 5-year installer's workmanship warranty. Additional requirements include daily debris removal, panel protection during construction, preventing dissimilar metal contact, and touching up field-cut edges with manufacturer-approved coating. The document is structured in three parts: General (summary and references), Products (panel and fastener details), and Execution (installation and warranty provisions).
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| File | Type | Posted |
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| Bill of Materials_B2108 Shed Building Materials (15 July 25).xlsx | XLSX spreadsheet | |
| Lintel_L1_Specification.pdf | ||
| RFQ- B2108 Shed Building Materials (15 July 2025).pdf | ||
| Lintel_L2_Specification.pdf | ||
| RFQ- B2108 Shed Building Materials.pdf | ||
| Bill of Materials_B2108 Shed Building Materials.xlsx | XLSX spreadsheet |
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Text version
Specification: Corrugated Galvalume Metal Roof Panels
SECTION 07 41 13 - CORRUGATED GALVALUME METAL ROOF PANELS
PART 1 - GENERAL
1.1 SUMMARY
This section includes the installation of corrugated Galvalume metal roof panels, including fasteners and accessories.
1.2 REFERENCES
- ASTM A792 - Standard Specification for Steel Sheet, 55% Aluminum-Zinc Alloy-Coated by the Hot-Dip Process
- UL 790 - Standard Test Methods for Fire Tests of Roof Coverings
- SMACNA - Architectural Sheet Metal Manual
- NRCA - Roofing and Waterproofing Manual
1.3 SUBMITTALS
- Manufacturer's product data and installation instructions
- Material certification
- Sample panel and fastener samples
- Warranty documentation
PART 2 - PRODUCTS
2.1 METAL ROOF PANELS
- Material: Galvalume steel sheet, AZ55 coating
- Gauge: Minimum 28 gauge (thicker allowed)
- Profile: Corrugated, with minimum 7/8" rib height
- Width: Approximately 36" coverage
- Panel Length: Minimum 11'-0" or as required to minimize end laps
- Finish: Factory-applied acrylic coating (clear or color-coated)
- Fire Rating: Class A per UL 790
2.2 FASTENERS
- Type: Self-tapping hex head screws with integrated EPDM rubber washers
- Material: Corrosion-resistant carbon steel with zinc or ceramic coating
- Length: Sized to penetrate through roofing substrate and achieve minimum 1" embedment into framing
- Spacing:
- Side laps: 12" o.c.
- Panel ends and supports: 6" o.c. and at every corrugation crest
- Color: To match roofing panels, if exposed
2.3 ACCESSORIES
- Ridge caps, eave trim, gable trim, closures, sealants, and tape closures compatible with panel profile and finish
PART 3 - EXECUTION
3.1 INSTALLATION
- Install per manufacturer's instructions and industry best practices (NRCA, SMACNA)
- Align panels with consistent edge spacing and straight courses
- Overlap corrugations as specified and secure with designated fastener pattern
Specification: Corrugated Galvalume Metal Roof Panels
- Install closure strips and sealants at eaves, ridges, and penetrations
- Prevent dissimilar metal contact
- Field-cut edges to be touched up with manufacturer-approved coating
3.2 CLEANING & PROTECTION
- Remove metal shavings and debris from roof daily
- Protect panels from damage and staining throughout construction
- Final inspection to ensure watertight installation
3.3 WARRANTY
- Minimum 20-year manufacturer's warranty on material and coating
- Minimum 5-year installer's workmanship warranty
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