Composite Deck Cost in Alabama
A Composite deck in Alabama costs $32-$87/sqft installed with the state's 0.92× labor multiplier (South). Generic composite covers the entire wood-plastic-composite + capped composite + PVC market — Trex, TimberTech, Fiberon, Deckorators, MoistureShield, Wolf, Zuri, NewTechWood, DuraLife. Average 25-yr lifespan + no maintenance is the value vs PT pine which needs annual staining. Alabama labor runs ~0.92× national. Humid summers favor composite over PT, but mid-tier composite still beats PT on 25-yr TCO.
Composite cost by deck size in Alabama
Mid-tier Composite (TimberTech Pro Legacy) at Alabama's 0.92× labor multiplier — ~$53/sqft installed.
Cost ranges include materials + labor + standard railing. Excludes permit ($140 baseline + 1.2% of project value), demolition (if replacing), and footings for 6″ frost depth.
Composite product lines in Alabama
Composite installed cost ranges from $35/sqft (entry tier like Trex Enhance Basics) to $95/sqft (luxury PVC like AZEK Harvest). National median is $50-58/sqft for a mid-tier 2026-Q1 build — multiply by your state labor multiplier for local pricing.
Alabama-specific notes
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FAQ — Composite in Alabama
How much does a Composite deck cost in Alabama?▾
In Alabama, Composite decking costs $32-$87/sqft installed (national $35-$95/sqft × Alabama's 0.92× labor multiplier). A typical 16×20 (320 sqft) Composite deck lands around $19,200. Mid-tier TimberTech Pro Legacy runs about $16,960 for the same scope.
Which Composite line is best for Alabama's climate?▾
Alabama's humid climate favors capped composite or PVC over generic composite — Fiberon Sanctuary performs best in this environment. Salt-air coastal areas (Gulf Coast, Atlantic) need 316SS hardware regardless of brand.
What's the permit fee for a Composite deck in Alabama?▾
Alabama permit fees typically run $105-$259 depending on jurisdiction and project value — most calculators use max(regional baseline $140, 1.2% of project value). Most AL jurisdictions require permits for decks > 30″ off grade or > 200 sqft. Fees typical $100-180.
How deep do footings need to be for a Composite deck in Alabama?▾
Alabama's frost depth is approximately 6″. Composite doesn't change the footing requirement — that's IRC R403.1.4-driven by frost line. Use Sonotube 10″ for typical loads. Verify with your local building department since AHJs sometimes require deeper depths than the state-published value.
Is Composite worth the money in Alabama?▾
Composite vs PT pine over 25 years in Alabama: PT pine = ~$28/sqft installed + ~$2/sqft/yr maintenance (stain/seal annually) = $85/sqft total. Composite mid-tier = $53/sqft installed + $0 maintenance = $53/sqft total. Composite typically wins the 25-yr TCO comparison by 20-40%, plus better resale value.
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