Type B Deck
At 1.5” deep, Type B Deck provides a balance of strength and economy when used with rigid insulation at least 1” thick. B deck is manufactured from steel conforming to A653 and available with nested and interlocking side-laps, as well as an acoustic deck.
Available finishes include:
- Standard prime-painted finish in grey covering both sides of the decking
- Galvanized finish in G40, G60, and G90 coatings
- Two coats bright white primer bottom with prime-painted (grey) or galvanized top
These prime-painted finishes protect the steel during the installation time when exposing the decking to standard atmospheric conditions. Prime-painted is an impermanent and provisional coating.
Type N Deck
Much stronger than Type B Deck with twice the depth, Type N Deck typically works best for projects where the supporting members need to be spaced far apart to reduce the overall cost. Large structures, like auditoriums and gymnasiums, utilize Type N Deck to span large open spaces where the roofing will be very heavy and costly.
Available finishes include:
- Standard prime-painted finish in grey covering both sides of the decking
- Galvanized finish in G40, G60, and G90 coatings
- Two coats bright white primer bottom with prime-painted (grey) or galvanized top