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👉 Code-Compliant Roof Decks, Delivered Fast
B, N, A, and F Decks. UL, IAPMO Approved. FM approved B deck. Fast Order Fulfillment.
- 80 KSI strength available
- Custom-cut to your specs
- Fast, nationwide delivery
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Certified To Meet Building Codes Nationwide
Roof deck profiles meet or exceed key compliance standards for commercial and industrial builds.
UL Approved
IAPMO Approved
SDI Member
(B Decks)
Why Contractors Choose Our Roof Decks
When you’re installing a structural roof system, you need steel you can trust—delivered on time, every time.
- B, N, A, and F roof deck profiles available
- 80 KSI steel available for B deck & 50 KSI for others
- Cut to your jobsite specs
- UL Listed. B Deck FM and Florida Approved
- No minimum order – any job size welcome
- Competitive pricing and expert help
- Quick shipping across the U.S.
Available Roof Deck Profiles
- Most popular commercial roof deck
- 1.5″ depth, 6″ coverage
- Available in 16–22 gauge
- FM approved, UL listed
- Deep rib for long spans and heavy load support
- Ideal for warehouses and large commercial roofing systems
- Up to 80 KSI strength
- UL listed
- Narrow rib deck profile
- Used for repair and overlay roofing
- Shorter span design
- Wide rib spacing
- Lightweight solution for short-span roofs
- Great for reducing steel usage
Trusted Roof Deck Supplier Since 1964
Your roof structure depends on steel decking that shows up right, fits right, and holds strong. We deliver it—fast. From compliance to customization, we help you keep your project on time and on spec.
- 80,000+ tons of steel decks produced annually
- Family-owned for 60+ years
- Talk to the same person every time
- B and F decks in stock for fast turnaround
- Nationwide delivery available
What Are People Saying About Marlyn Steel Decks?
Get The Roof Decks You Need—Fast.
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Frequently Asked Questions...
What types of roof deck profiles do you supply?
B, N, A, and F decks—FM, UL, and Florida code compliant. You can get more details in our Roof Deck section.
Do you offer 80 KSI steel options?
Yes, our roof decks are available in 80 KSI for long-span support and other decks are available in 50 KSI.
What is your typical lead time?
Lead time to fulfill an order depends on the size of the order, the current number of orders we are processing, and whether you are having the order delivered or picking it up. Request a quote today to get an estimate.
Do you cut to custom lengths?
Yes, we can cut the steel to fit your needs.
What certifications do your decks have?
We are members of the Steel Deck Institute (SDI). All products are UL approved. We are IAPMO approved on most products (equivalent to an ICCES report) we have FM approval on B decks, and our B decks meet the standards of Florida Product Approval. You can see our certifications and reports here.
Is there a minimum order size?
No. Unlike other companies, we accept orders large and small.
Do you deliver nationwide?
we ship nationwide and to parts of Canada and the Caribbean. Request a quote today to get specific information on your delivery.