Mixed (wood post + cable/aluminum infill) Railing Cost — 20×16 Deck
A ~64 lf of mixed (wood post + cable/aluminum infill) railing on a 20×16 (320 sqft) deck costs $4,800-$8,640 installed. Wood or composite posts paired with cable or aluminum infill panels — splits the cost difference between premium and traditional systems while keeping the wood-post warmth.
25-year cost of ownership breakdown
Install cost + lifetime maintenance for 64 lf of mixed (wood post + cable/aluminum infill) railing.
Code compliance + warranty
Each component must be code-compliant individually (post height, infill spacing). Mixed systems often need an engineer letter because the warranty pieces don't form a single certified assembly.
10-20 yr components, no system warranty. Confirm specifics with the manufacturer for your chosen product line.
When to pick mixed (wood post + cable/aluminum infill)
Designs that want warmth of wood + modernity of metal/cable. Contractor-friendly because post + infill bids stay competitive.
Most ambitious build to permit — inspector wants to see compliance docs for each component. Mixed-warranty also means mixed claim paths if any single part fails.
Open the calculator with mixed (wood post + cable/aluminum infill) pre-loaded
The full deck cost calculator dials in your exact railing height, post spacing, baluster style, and stair handrail spec for accurate quoting.
FAQ — mixed (wood post + cable/aluminum infill) on 20×16
How much does mixed (wood post + cable/aluminum infill) railing cost on a 20×16 deck?▾
For a 20×16 (320 sqft) deck, you need approximately 52 linear feet of perimeter railing plus ~12 lf for a single stair = ~64 lf total. At mixed (wood post + cable/aluminum infill)'s $75-$135/lf installed range, that's $4,800-$8,640. Numbers are 2026-Q1 national retail at average labor.
Does mixed (wood post + cable/aluminum infill) railing meet IRC R312 code?▾
Each component must be code-compliant individually (post height, infill spacing). Mixed systems often need an engineer letter because the warranty pieces don't form a single certified assembly.
What's the 25-year cost of mixed (wood post + cable/aluminum infill) railing?▾
For a 20×16 deck (~64 lf railing): install $6,720 + 25-year maintenance ~$640 = $7,360 total cost of ownership. Wood post: re-seal every 2-3 years (~$0.40/lf). Cable infill: re-tension annually. Aluminum infill: touch-up paint every 8-12 years.
Is mixed (wood post + cable/aluminum infill) railing right for a 20×16 deck?▾
Best for: Designs that want warmth of wood + modernity of metal/cable. Contractor-friendly because post + infill bids stay competitive. Watch-outs: Most ambitious build to permit — inspector wants to see compliance docs for each component. Mixed-warranty also means mixed claim paths if any single part fails.
What warranty does mixed (wood post + cable/aluminum infill) railing carry?▾
Typical: 10-20 yr components, no system warranty. Confirm specifics with the manufacturer for your chosen product line — warranties often include exclusions for salt-air, fastener corrosion, or improper install. Keep your install paperwork to file warranty claims.