Fortress Evolution Deck Framing
Fortress Evolution Steel Deck Framing is a Class A fire-rated galvanized steel deck framing system, per Fortress, for builders, deck contractors and multifamily projects.
About Fortress Evolution Deck Framing
Fortress Evolution is a steel deck framing system with a Black Sand powder coat over G60 galvanized steel. Per Fortress, it is Class A fire rated, meets Wildland Urban Interface requirements, and is listed on the Cal Fire Safe Vendor List. It works with any decking and is resistant to rot, warping, splitting and insects.
Components include 16 ga 2×6 joists in 12 to 20 ft lengths, S-ledger in 12 and 20 ft for 12 or 16 in on-center spacing, 8 ft rim joist, 2×11 beam in 8 to 20 ft, double beam track, 3.5 x 3.5 in posts (8, 10 ft) and 5.5 x 5.5 in posts (8 to 20 ft), lateral bracing and a 4 ft tile deck tray. The interlocking joist and ledger system follows familiar wood-framing methods with minimal fasteners, in pre-punched and blank options. Brackets, post caps, bolt kits, screws and touch-up paint complete the order. Fortress lists a 25-year limited warranty.
For a quote, send your framing plan or takeoff with joist spacing, lengths and post counts. Axiom South ships nationwide.

Colors, sizes and specifications
Colors and finishes
- Black Sand powder coat
Sizes and configurations
- S-ledger 12 and 20 ft
- Joists 12, 14, 16, 18, 20 ft
- Rim joist 8 ft
- Posts 3.5×3.5 (8, 10 ft) and 5.5×5.5 (8-20 ft)
- 2×11 beam 8, 12, 16, 20 ft
- Post caps 2×2, 3.5, 5.5, 7 in
- Bolt kits 3, 9, 14 in
Models
- S-Ledger (12/16 in OC pre-punched) and Blank S-Ledger
- Ledger Bracket
- 16-gauge 2×6 Joist
- Rim Joist, Blank and Curved Rim Joist
- Posts and post/anchor brackets
- Single and double beam/post brackets
- 2×11 Beam and Double Beam Track
- Lateral bracing/purlin
- Tile Deck Tray
- F-50, F-30, F-10, 45 deg, single and double hanger brackets
- Blocking, mid-span strap
Features
- Easy install for anyone familiar with wood framing
- Straight, flat pieces
- Greater spans with fewer posts
- Works with any decking
- Class A fire rating, noncombustible, meets WUI requirements
- Resists rot, warping, splitting, insects
Specifications
| Material | Galvanized steel |
|---|---|
| Joist | 16 ga 2×6, G60 galvanized plus powder coat |
| Fire rating | Class A |
| Spacing | 12 or 16 in OC |
Accessories and works with
- Joist cap
- Beam cap
- Post caps
- Touch-up paint
- Bolt kits
- Toggle bolts
- Spacer squash bolts
- Self-drilling screws
Best for
- Deck framing
- Curved decks
- Bay window and angled ledgers
- Tile paver decks
- Pergolas
- Stair framing
- Multifamily projects
Installation notes
- Interlocking joist and ledger system, minimal fasteners
- Pre-punched and blank options
- Installation guides and video on manufacturer site
Warranty
25-year limited manufacturer warranty.
Fortress Evolution Deck Framing photos
One product or the whole package
Order this on its own, with a few related products, or with everything else for the project. One itemized quote, shipped to all 50 states. Need someone to install it? Find an installer serving your area.
Request a quote for Fortress Evolution Deck Framing
Send plans, measurements, or photos and we will prepare an itemized quote. You can also call us with questions.




