What Configurations Does Type B Metal Decking Come In?
Type B deck can be configured by gauge (22, 20, 18 or 16), coating (G60 or G90 galvanized), finish (painted), venting for lightweight insulating concrete, and custom cut length. The engineer sets the fastener layout per sheet, and accessories such as sump pans and Tek screws are ordered with it. We supply every combination for South Florida projects from one takeoff.
Structural options
- Gauge by zone: heavier deck at high-uplift edges and corners.
- Fastener layouts for 36" sheets: 36/7, 36/5, 36/4 and 36/3, chosen by the engineer.
- Sidelap fastening: per the catalog, generally not required under 5'-0" spans; over 5'-0", at midspan or every 36", whichever is smaller.
- Multi-span sheet lengths to gain capacity.
Architectural and roofing options
- Painted finish for exposed ceilings.
- Vented Type B, which lets water escape so lightweight concrete and cementitious insulation dry.
- G90 coating for coastal and humid exposure.
- Accessories in 10' lengths, furnished when ordered; recessed level sump pans are standard and sloped pans are made when specified.
For floors or longer spans
If the design needs a floor, use 1.5" Type BI inverted form deck or composite deck; for longer roof spans, 3" Type N. Send plans and we will quote the right mix.
Related Questions
When should I use vented Type B deck?
Use it under lightweight insulating concrete or cementitious insulation. The vent slots let excess water escape, so the fill dries properly. For standard rigid insulation and membrane roofs, non-vented deck is typical. Vented Type B has the same 36" coverage and gauge range as standard Type B.
Are accessories included with deck orders?
No. Per our catalog, accessories are furnished only when ordered, in 10' lengths. List sump pans, Tek screws and other items in your request so they ship with the deck. A recessed level sump pan is standard; sloped pans are made when specified.