Type N Metal Roof Deck is a 3" tall, deep rib metal roof deck, that is designed to provide an economical roofing support surface when longer spans are required between roofing supports. It is also used as a secondary structural diaphragm member to provide for lateral force distribution to the structure’s vertical force resisting systems. Type N Metal Roof Deck is available in 24” cover width and three standard gauges, with either a galvanized finish or prime painted to inhibit rust while in transit (primer is not a finish coat). Please inquire for availability of special gauges or finishes.
N-Acoustical, N-Cellular, and N-Cellular & Acoustical are also available (longer lead times may be required). Acoustical deck is especially suited for structures where sound control is desirable.
Unit of Measure

Item #

Item Name

Design Thickness

Height (Min.)

Rib Spacing – Bottom (Min.)

Rib Spacing – Top (Max.)

Pitch (Rib Spacing – Center to Center)

Type N Roof Deck (Deep Rib) N/A Metal Roof Deck N/A 18 gauge (0.0474") 20 gauge (0.0358") 22 gauge (0.0295") N/A 3 in N/A 1 1/2 in N/A 2 3/4 in N/A 8 in