Wide-Rib Steel Deck for Commercial Roofs
Type B metal deck is a 1-1/2" deep, wide-rib steel roof deck used in commercial, industrial, and institutional buildings. Its ribs sit on 6" centers across 36" of coverage, and the wide top flanges give rigid insulation a flat, continuous surface to bear on. Type B spans efficiently between steel joists and beams, works as a structural diaphragm when fastened correctly, and installs fast with welds, screws, or powder-actuated fasteners. Available in multiple gauges with galvanized or primed finishes, Type B deck is a standard choice for warehouses, retail centers, schools, shops, and mezzanine roofs. Type B gives you True Durability from the joists to the membrane.
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Type B’s 1-1/2" wide ribs give it more strength than narrow-rib or intermediate-rib deck, so it spans farther between joists and carries heavier roof loads. Fastened to the frame, it acts as a structural diaphragm that stiffens the building against wind and seismic forces.
Made in America
Support American industry with American made metal deck panels. Skilled American workers roll-form our Type B Metal Deck panels and ship them across the nation, which means consistent quality, quick turnaround, great pricing, and fast cross nationwide shipping.
Fast Installation
Each sheet covers 36" and lays out quickly across steel joists and beams. Crews attach it with welds, screws, or powder-actuated fasteners, and cut-to-length sheets reduce field trimming and waste, so your roof gets dried in sooner and the project stays on schedule.
Cost
Effective
Galvanized or primed steel deck won’t rot, warp, or attract termites, and it holds its shape for decades. Because Type B spans efficiently, it can reduce the joists and framing a roof needs, keeping structural costs down without giving up strength or code compliance.
Gallery
Specifications
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Materials:
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22ga, 20ga, 18ga, 16ga steel
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ASTM A653 structural steel (Grade 33 or 50)
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Finished:
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G60 Galvanized
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G90 Galvanized
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Gray Primer
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36" Net Coverage
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1-1/2" Rib Depth
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6" Rib Spacing
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2-1/2" Wide Rib profile
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20'3" or 24'3" standard lengths
Testing
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ANSI/SDI RD Roof Deck Standard Compliant
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AISI S100 Design Compliant
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UL Fire-Rate Roof Assemblies
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ICC-ES Evaluation Report
Resources
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