3" N MMD ROOF DECK
3" Type N steel deck is widely used in roof applications due to its long-span capabilities and structural strength. The Type N profile is 3 inches deep and comes in gauges ranging from 22 GA to 16 GA, providing flexibility for various roofing projects. This deck complies with SDI and ASTM standards and is available in galvanized finishes like G60 and G90.
Strong, durable, and efficient for long-span roofing applications.
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Elevate your projects with our 3" Type N roof deck, offering superior strength, fire-rated performance, and long-span efficiency. Ideal for large-scale commercial roofing and sustainable building applications.
Deep Rib Profile for High Strength
The 3-inch rib depth provides superior strength, making it ideal for longer spans and heavy roofing loads.
Wide Coverage Efficiency
With a standard 24-inch coverage, it reduces material usage and simplifies installation, perfect for large-scale projects.
Corrosion-Resistant Finish Options
Available in G60 or G90 galvanized finishes for excellent durability and resistance to harsh environmental conditions.
Fire and Acoustic Performance
Meets fire-rating standards when used in approved assemblies and supports insulation for soundproofing and thermal efficiency.
Compliance with SDI Standards
Meets Steel Deck Institute (SDI) and ASTM guidelines, ensuring quality and code compliance.
Long Span Capability
Available in 22, 20, 18, and 16 gauges, allowing customization to meet specific load-bearing requirements and project demands.
The 3" Type N roof deck features corrosion-resistant finishes and custom lengths (6′ to 40′), ensuring durability and minimizing material waste.
Choose from our high-strength 80 KSI steel Type N 3'' Roof Deck, available with a corrosion-resistant galvanized finish meeting ASTM A653 standards, prime-painted finishes for additional protection, or bare steel for specialized applications. Each finish is engineered to ensure durability and reliable performance in demanding roofing environments.
Specifications of 3" Type N Roof Deck
Key details on strength, gauge, finish, and depth for the 3" Type N metal decking
Dimensions and Profile Details
Property | Details |
|---|---|
Profile Depth | 3 inches |
Coverage Width | 24 inches |
Rib Spacing | 8 inches (center to center) |
Rib Height | 3 inches |
Material Width | 26 inches (uninstalled, including overlap) |
The Type N Roof Deck is available in a range of gauges, including 22, 20, 18, and 16. These gauges provide options for varying thicknesses and load capacities to meet specific roofing project needs. Lighter gauges (22 and 20) are suitable for short spans and lighter loads, offering cost efficiency. Heavier gauges (18 and 16) deliver enhanced strength and durability, ideal for long spans and heavy-duty roofing applications.
Gauge
Gauge | Thickness (inches) | Weight (lbs/sq ft) | Typical Applications |
|---|---|---|---|
22 | 0.0295 | 1.9 | Light-duty roofing and small spans. |
20 | 0.0358 | 2.3 | Medium spans, roofing, and floors. |
18 | 0.0474 | 3 | Heavy-duty composite floors. |
16 | 0.0598 | 4 | High-load floors and special spans. |
The Type N deck is available in a range of gauges, including 22, 20, 18, and 16. These gauges offer varying thicknesses and load capacities to suit specific project needs. Thinner gauges (22 and 20) are lightweight and cost-effective, ideal for shorter spans and lighter loads. Thicker gauges (18 and 16) provide enhanced structural strength and can support longer spans and heavier loads, making them perfect for demanding applications.
Finish
Finish Type | Details |
|---|---|
Galvanized G60 | Zinc coating of 0.6 oz/ft². Recommended for general environments. |
Galvanized G90 | Zinc coating of 0.9 oz/ft². Ideal for highly corrosive environments. |
Prime-Painted | Provides a base coat for additional protection or paint adhesion. |
Bare Steel | Unfinished; typically for indoor use or controlled environments. |
To ensure durability and long-term performance, the Type N deck comes in multiple finish options, including galvanized (G60 and G90) and prime-painted. Galvanized finishes provide excellent corrosion resistance, with G90 offering higher zinc coating for environments with greater exposure to moisture or chemicals. The prime-painted option adds a protective base coat, making it suitable for projects requiring additional layers of paint or coatings. These finishes extend the deck’s lifespan and protect it from environmental wear and tear.
Applications of 3” Type N Metal Decking Growth
Perfect for large-scale commercial roofs, the 3" Type N steel deck provides exceptional strength, supports insulation systems, and is ideal for fire-rated and non-fire-rated roofing assemblies.
Long-Span Roofing Systems
Type N is perfect for large-scale commercial and industrial roofing systems requiring long spans and fewer supports. Its 3-inch rib profile ensures exceptional strength and efficiency for expansive roof designs.
Fire-Rated Roof Assemblies
Type N is commonly used in fire-rated roof systems, offering compatibility with insulation and fireproofing materials. It ensures safety and performance for demanding commercial and industrial applications.
The 3" Type N deck is crafted to align with industry-leading standards, ensuring reliability, durability, and performance for your projects.
Compliance with Standards
SDI (Steel Deck Institute): The 3" Type N deck complies with SDI specifications, ensuring high standards for design and performance.
ASTM A653/A924: These standards cover the galvanization process for the deck's finish, ensuring corrosion resistance.
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What gauge is most commonly used for Type B decking?Type B decking is typically available in 22 GA, 20 GA, and 18 GA.
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What is the difference between G60 and G90 galvanized finishes?G60 and G90 refer to the level of galvanization, with G90 offering thicker zinc coating and better corrosion resistance.
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What are the maximum spans for the 1.5" Type B deck?Maximum spans depend on the gauge, span type, and load requirements. For example, 22-gauge decks can span up to 8 feet under multiple spans, while 16-gauge decks can span up to 14 feet. Always consult load tables for precise details.
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Can 1.5" Type B metal decking be customized for specific projects?Yes, the deck can be customized in terms of gauge, finish, and length. Custom lengths are cut to suit project needs, reducing waste and optimizing installation efficiency.
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Does 1.5" Type B metal decking meet industry standards?Absolutely. It complies with Steel Deck Institute (SDI) standards and American Iron and Steel Institute (AISI) design guidelines, ensuring quality, safety, and compatibility with construction codes.