What is Type F roof deck?
Type F steel roof deck is often used for repair and re-roofing projects. It features a higher strength-to-weight ratio than Type A roof deck, but lower than Type B. Type F’s smaller support spacing results in an increase in the number of supports needed, as the supports must be spaced closer together.
Type F roof deck dimensions and specs
Industry designations
- Type F Deck
- Intermediate Rib
- IR
Gauges
- 18
- 20
- 22
Finishes
- Primed Gray (protects the base steel in a properly enclosed, dry environment)
- G60 Galvanized (protects the base steel in more aggressive interior environments or areas where greater corrosion resistance is required
Maximum construction span
| No. of Spans | Deck Type | Max Const. Span |
|---|---|---|
| 1 | F22 F20 F18 | 4′-3″ 5′-4″ 6′-3″ |
| 2 or more | F22 F20 F18 | 4′-11″ 5′-5″ 6′-3″ |
