Type N roof decking, also called 3-inch-deep wide rib metal roof deck, is engineered to deliver strength over long spans. It’s commonly used in commercial roofing where fewer supporting members are desired. With a profile depth of 3 inches and a wide rib configuration, Type N roof deck helps distribute loads efficiently and allows greater open spaces in structural steel frameworks.
Keystar Industries offers Type N roof decking in a variety of gauges and finishes, including galvanized G90 and primed gray. These options enable contractors and engineers to meet performance requirements while taking into consideration corrosion resistance and project aesthetics.
This profile usually provides 24 inches of coverage per sheet and is compatible with a variety of insulation systems, making it ideal for buildings that require both thermal performance and structural stability. Its deep profile means that the deck can span longer distances, often up to 16 feet, making it a practical choice for warehouses, manufacturing facilities and other large-scale buildings with minimal interior columns.
When to Specify Type N Roof Decking
Choosing Type N roof decking comes down to project design and load requirements. Compared to shallower profiles such as Type B or Type F, Type N decking offers:
– Longer Clear Spans: It’s the go-to choice when minimizing intermediate support framing is essential.
– Structural Efficiency: The 3-inch depth provides more moment capacity, which can be used to better distribute loads.
– Open Ceiling Aesthetics: Ideal for buildings that use open-web steel joists and have exposed ceilings.
Engineers prefer this profile when a roof must support heavier equipment, solar panel arrays, or large mechanical systems. Its deeper ribs and higher span capacity mean less substructure is required, which can save on labor and material costs in the long term.
However, it’s important to note that Type N deck may not always be the right fit for smaller buildings or tight framing configurations where a shallower profile would better align with design constraints.
Finishes and Corrosion Protection
Keystar provides Type N roof decking in multiple finishes, each suited for different environments and construction timelines:
– Galvanized G90 Finish: Offers high corrosion resistance and long-term durability, particularly in moisture prone environments or exterior applications.
– Primed Gray Finish: Provides temporary protection during construction and is cost-effective for interior or controlled environments where long-term corrosion is not a major concern.
These finishes are factory-applied, assuring uniformity and lessening the prep time on the job site. For projects that require high reflectivity or other coating, galvanized decks may be painted in the field after installation.
Lead Times, Stock Options, and Custom Cutting
Keystar Industries supports contractors by maintaining stock of Type N roof decking in a variety of gauges. In addition to stock lengths, we provide cutting to specified lengths for efficient site delivery and reduced job site waste.
By ordering pre-cut decking, you can avoid delays due to modifications made in the field. This is particularly useful when installation schedules are tight or when several trades work at the same time in a large building envelope.
We assist with the coordination of your order information – including gauge, finish, length, and delivery location – so that you can focus on execution rather than material logistics.
Choosing the Right Metal Deck Accessories
When ordering Type N roof decking, it’s essential to include the correct metal decking accessories to support structural and sealing needs. Accessories that are compatible with Type N deck include:
– End Closures and Side Closures: Prevent concrete or insulation from leaking through the deck flutes.
– Pour Stops: Used to hold back concrete pours at the edge of the deck, especially if the deck is part of a composite floor slab.
– Foam Closures and Flute Fillers: Provide additional weather protection and help to reduce noise transmission in some applications.
– Sump Pans: Ease the installation of roof drains through the deck.
Ensuring compatibility between deck profile and accessories is key to avoiding costly rework or delays. Keystar’s team can help determine what’s needed for your job depending on deck type and usage.
Why Contractors Choose Keystar for Type N Roof Decking
Since 1996, Keystar Industries has supplied quality metal decking across the Upper Midwest. Contractors trust us for our:
– Responsive service and dependable inventory
– Ability to meet tight deadlines
– Accurate order fulfillment, including cutting to spec
– Knowledgeable team available to help with profile and accessory selection
With experience in supporting everything from small retrofits to major commercial construction projects, Keystar is a trusted partner in metal decking supply.
Final Thoughts on Ordering Type N Roof Decking
For projects that require long spans, structural performance, and durability, Type N roof decking is an excellent solution. When sourced from Keystar, you get more than just material – you get a supply partner that understands your project demands.
From finish selection to accessory matching, we help contractors reduce rework, simplify logistics and keep installations on track. Contact us at 651-256-0008 or in**@***************es.com to check stock, request a quote or discuss your upcoming roofing job.
Let Keystar help make your next Type N roof decking order as seamless and successful as possible.