How Much is Composite Decking: Complete Guide for Homeowners

The honest answer to how much you will spend on a composite deck has more to do with which brand tier you pick than how big the deck is. How much is composite decking in 2026 ranges from $4 to $13 per square foot for materials alone, and $30 to $60 per square foot installed including framing, fasteners, and labor. The difference between the low and high ends is usually capped versus uncapped, brand reputation, and color fade warranty length, not actual structural performance.

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The Three Tiers of Composite Decking

Composite decking falls into three pricing tiers. Entry-level uncapped composites like Trex Enhance Basics and Fiberon Good Life run $4 to $6 per square foot for material. Mid-tier capped composites like Trex Enhance Naturals, TimberTech AZEK Reserve, and Fiberon Sanctuary cost $6 to $9. Premium capped polymers like TimberTech AZEK Vintage and Fiberon Paramount sit at $9 to $13.

Capping is a polymer shell wrapped around the composite core during manufacturing. It blocks moisture, resists stains, and dramatically improves fade resistance. Uncapped boards from 2010 era technology have largely been phased out. Even the cheapest current Trex board has a partial cap that wraps the top and sides.

Material Costs by Brand

Trex Enhance Basics runs $4.50 to $6 per square foot. Trex Enhance Naturals sits at $6 to $8. Trex Transcend, the premium tier, runs $9 to $12. TimberTech AZEK starts at $7 for Harvest Collection and goes up to $13 for Vintage Collection. Fiberon Good Life sits at $5 to $7, Sanctuary at $7 to $9, and Paramount (full PVC) at $10 to $13.

These numbers are 2026 retail at home centers and lumberyards. Pro contractors get 10 to 20 percent discounts at lumberyards, which usually pass through to the homeowner on labor-plus-material bids. Add 10 percent for waste, more if your deck has angled cuts or picture frame borders.

Framing, Fasteners, and Hidden Costs

The deck frame underneath is usually pressure-treated Southern Yellow Pine at $2 to $3 per square foot for materials. Joists, beams, posts, and ledger boards make up roughly 25 to 35 percent of total deck cost. Steel framing systems from Fortress or Trex Elevations cost 2 to 3 times more but extend deck life beyond the composite warranty period.

Hidden fasteners like Camo Edge or Cortex run $0.75 to $1.25 per square foot of decking. Stainless face screws cost less but show on the surface. Joist tape and post wraps add $0.30 to $0.50 per square foot but extend frame life from 15 to 30 years by blocking water at the fastener penetrations.

Installed Cost: Labor Reality

Pro labor for composite deck installation runs $25 to $40 per square foot in most US markets, sometimes touching $50 in coastal cities. A 16×20 foot (320 sq ft) deck with a mid-tier capped composite, basic railing, and standard framing typically lands at $14,000 to $20,000 turnkey.

Larger decks have lower per-square-foot costs because mobilization, design, and permit fees spread across more area. A 600 square foot deck might run $40 per square foot installed, while a 200 square foot deck can hit $65 per square foot. Multi-level decks add 15 to 25 percent in stair, framing, and railing complexity.

Railings, Stairs, and Add-Ons

Railings often surprise budget-conscious homeowners. A composite top rail with aluminum balusters from Trex Signature runs $80 to $130 per linear foot installed. Cable railings, popular in modern designs, cost $130 to $200 per linear foot. Glass panel railings hit $150 to $300 per linear foot.

Stairs cost roughly 1.5 times as much per square foot as flat deck area because of stringer cuts, riser boards, and the extra labor. Built-in benches, planters, and lighting each add $500 to $2,500 depending on scale. Low-voltage step lights from TimberTech or Trex run $40 to $80 per fixture installed.

DIY vs Pro: When Each Makes Sense

DIY composite deck installation is achievable for confident homeowners with basic carpentry skills. Material-only costs save 50 to 60 percent versus a contractor bid. A 320 square foot deck takes 3 to 5 weekends of solid work for a two-person team with one experienced lead.

Hire a pro for any deck over 8 feet off the ground, any deck attached to a ledger board on a finished house wall, or any project requiring a permit you cannot navigate. Permit costs run $200 to $800. Failed inspections on DIY decks often require tear-out and rebuild, which wipes out the savings.

Long-Term Cost Comparison vs Wood

Pressure-treated wood decking costs $15 to $30 per square foot installed, less than half of composite. The catch is maintenance. PT wood needs cleaning and sealing every 2 to 3 years at $300 to $700 per service. Over 25 years, total spend often exceeds the upfront premium for composite.

Cedar and ipe wood cost $25 to $50 per square foot installed and require similar maintenance. Composite needs only an annual rinse with mild soap and a deck brush. Over a 25 to 30 year horizon, composite is usually cheaper per year than wood when you include maintenance, refinishing, and eventual board replacement.