3” N-Deck – Roofing
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3” N-Deck – Roofing
Roofing
The 3” N-Deck is a high-strength structural steel roof and floor decking system designed for projects that require greater spanning capability, increased load capacity, and enhanced structural performance. Commonly specified for large commercial, industrial, and institutional buildings, N-Deck is ideal for long-span applications where fewer supports are desired.
Can be used as a roof deck or floor deck, either as a standalone system or as part of a composite concrete deck assembly, making it a versatile solution for demanding structural applications.
Engineered with a deeper rib profile than standard B-Deck, the 3” N-Deck delivers superior strength and stiffness, allowing it to span longer distances while supporting heavy roof loads, insulation systems, and concrete fills. When properly designed, N-Deck also contributes to overall building stability by helping resist wind and seismic forces.
N-Deck Profile Options
The 3” N-Deck is available in multiple profile configurations to meet specific project and installation requirements:
- Nestable
- Interlocking with Top Seam Weld / Button Punch
- Interlocking with Screwed Sidelap
These profile options provide flexibility in fastening methods while maintaining consistent structural performance.
Features
- Coverage Width: 36”
- Minimum Roof Slope: ½:12
- Panel Attachment: Exposed Fastening System
- Gauge: 22, 20, 18
- Finish:
- Composite (embossed)
- Non-Composite (smooth)
- Composite (embossed)
- Substrate:
- Grade 50, G60 (standard)
- G90 (optional – special pricing required)
- Grade 50, G60 (standard)
- Panel Length: 3’-6” to 60’-0”
- Rib Spacing: 12”
- Rib Height: 3”
Technical Resources & Downloads
Metal Warehouse Inc. provides comprehensive technical documentation to support proper specification and installation of the 3” N-Deck system, including:
- Product data sheets
- Structural and load-span tables
- CAD drawings and technical details
For assistance selecting the appropriate N-Deck configuration or for project-specific engineering support, our team is available to help ensure your roofing or flooring system meets all structural and performance requirements.