Price a 2026 composite deck by square footage, brand tier (Trex / TimberTech / Azek), railings, and whether you’re re-decking or starting from footings — then line up 3 manufacturer-certified installer quotes.
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Frequently Asked Questions
Q
How much does a composite deck cost in 2026?
Composite decks run $25-$60 per square foot fully installed including framing. A 300 sqft deck averages $8,000-$18,000; a 500 sqft premium Trex or TimberTech build can reach $25,000-$40,000. Premium tiers (Trex Transcend, TimberTech Azek) cost 2-3x entry-level lines.
Installed range: $25-$60/sqft
300 sqft typical: $8,000-$18,000
500 sqft premium: $25,000-$40,000
Entry tier: Trex Enhance, TimberTech Edge
Premium: Trex Transcend, TimberTech Azek
Brand / Tier
Material $/sqft
Installed $/sqft
300 sqft Total
Trex Enhance
$5-$7
$25-$40
$7,500-$12,000
Trex Transcend
$10-$16
$45-$70
$13,500-$21,000
TimberTech Edge
$6-$9
$30-$45
$9,000-$13,500
TimberTech Azek (PVC)
$9-$13
$50-$65
$15,000-$19,500
Re-deck (reuse framing)
same as above
$25-$40
$7,500-$12,000
Q
How much does Trex decking cost installed?
Installed Trex ranges $45-$70 per square foot including the substructure. Trex material alone is $5-$16/sqft. A 300 sqft Trex Enhance deck runs $14,000-$18,000; Trex Transcend runs $16,000-$22,000. Hidden fasteners add $1-$2/sqft labor.
Trex installed: $45-$70/sqft
Trex material alone: $5-$16/sqft
300 sqft Enhance: $14,000-$18,000
300 sqft Transcend: $16,000-$22,000
Hidden fasteners: +$1-$2/sqft
Q
Is TimberTech more expensive than Trex?
TimberTech PVC (Azek) generally costs 10-20% more than equivalent Trex lines due to longer warranties (50 years) and cap-and-core PVC construction. TimberTech material runs $6-$13/sqft, Trex $5-$16/sqft. TimberTech Edge entry line is competitively priced with Trex Enhance.
TimberTech Azek: 10-20% above Trex
Azek warranty: 50 years
Trex warranty: 25 years
TimberTech material: $6-$13/sqft
Edge line: price-competitive with Trex Enhance
Q
Why does composite cost so much more than wood?
Composite boards themselves cost 2-3x wood. They also require tighter joist spacing (12 in on-center vs 16), hidden fasteners, and picture framing, all of which add material and labor. Long-term savings come from zero staining and 25-50 year warranties versus 15-year wood.
Composite boards: 2-3x wood
Joist spacing: 12 in OC (vs 16 for wood)
Hidden fasteners: +$1-$2/sqft
Picture framing standard: +10-20% labor
Lifetime cost: lower than wood over 25 years
Q
Do I need a special contractor for a Trex or TimberTech deck?
Yes — manufacturer-trained builders (Trex Pro, TimberTech Platinum) understand proper gap spacing, fastener systems, and picture framing. Using a wood-only crew can void your 25-50 year warranty. Certified installers charge 10-15% more but protect the warranty.
Certified programs: Trex Pro, TimberTech Platinum
Certification premium: 10-15%
Wood-only crew: may void warranty
Proper gap spacing: expansion-critical
Picture framing: certified-installer standard
Q
How much does it cost to replace wood decking with composite?
Re-decking on existing framing runs $25-$40/sqft. Full replacement with new joists and posts is $40-$70/sqft. A 300 sqft conversion usually runs $8,000-$14,000 if the framing is sound. Ask the builder to inspect joists before quoting — rotted joists turn a re-deck into a full rebuild.
Framing= New pressure-treated, or reuse existing for 30-40% re-deck savings
Labor= Crew hours × local rate; 12 in OC joist spacing adds 25% labor
Railings= Composite, metal, or cable rail; 10-20% of build cost
Certification= Trex Pro / TimberTech Platinum +10-15% but preserves 25-50 year warranty
Composite Deck Costs in 2026: Trex, TimberTech, and Azek by Line
1
Composite Deck Cost in 2026: Trex, TimberTech, and Azek by Line
Composite decking pricing varies dramatically by brand and product line, and "composite average" hides important detail. Trex Enhance — the value tier and Trex’s highest-volume product — runs $5-$7 per square foot in materials and installs at $35-$45 per square foot all-in. Trex Transcend, the premium tier with woodgrain texture and the broadest color palette, runs $10-$16 per square foot in materials and installs at $45-$65 per square foot. TimberTech Composite (the AZEK family’s capped composite line) runs $7-$10 per square foot in materials and installs at $40-$55 per square foot.
Premium PVC decking is a step above composite in both performance and price. Azek PVC at $9-$13 per square foot in materials installs at $50-$70 per square foot, and Azek Vintage — the top-tier line with deep wirebrushed grain texture and 50-year warranty — runs $14-$18 per square foot in materials and installs at $60-$120 per square foot for premium custom builds. PVC decking is fully synthetic (no wood content) and weighs less than capped composite, but the premium pricing puts it out of reach for most volume residential buyers.
On a 300-square-foot deck the brand pricing math works out as follows: Trex Enhance $12,000, TimberTech Composite $13,500, Trex Transcend $16,500, TimberTech Azek PVC $16,500, and premium Azek Vintage $21,000+. Pricing has risen 8-12% across all brands since 2023 from PVC and capping-material cost increases plus labor inflation — always anchor against current 2026 ranges, not multi-year-old quotes.
Composite deck pricing by brand and line, 2026. Source: Angi, HomeGuide, DeckBros.
Brand / Line
Material ($/sqft)
Installed ($/sqft)
300 sqft deck
Trex Enhance
6
40
$12,000
Trex Transcend
13
55
$16,500
TimberTech Composite
9
45
$13,500
TimberTech Azek PVC
11
55
$16,500
Premium PVC (Azek Vintage)
15
70
$21,000
Brand pricing varies dramatically. Trex Enhance at $40 per square foot installed and Azek Vintage at $70+ per square foot sit on opposite ends of the same composite category — always specify brand and line when comparing bids.
2
Why Composite Costs 40-80 Percent More Than Wood Upfront
Composite deck upfront pricing typically runs 40-80% higher than comparable wood decking, and the premium breaks down into four distinct cost drivers. First, composite boards themselves cost 2-3x wood per square foot — the manufacturing process (extruded composite blends, capped surfaces, woodgrain embossing) is dramatically more material-intensive than milling pressure-treated pine or cedar. Second, joist spacing requirements differ: composite manufacturers require 12-inch on-center joist spacing for warranty validity vs the 16-inch OC standard for wood decks, which adds roughly 25% more framing lumber on a typical deck.
Third, hidden fastener systems are essentially mandatory on quality composite installs. Hidden fasteners (Camo, Cortex, Trex Hideaway) install through the side of the board into the joist below, creating a clean board surface without visible screws. The fasteners themselves cost $1-$2 per square foot more than standard deck screws, plus 20-30% more labor time per board because each fastener requires a side-shot rather than a top-shot. Fourth, picture framing and breaker boards — trim treatments around the deck perimeter and at directional changes — add 10-20% to material cost on premium installs because the trim board uses the same expensive composite as the field decking.
A few additional factors push composite pricing higher in specific scenarios. Premium colors (deep browns, greys, woodgrain blends) often cost 10-15% more than baseline tan or grey because they require additional pigment loading. Picture-frame border installs (around stair landings, planters, or ledger transitions) add 15-20% in cutting waste. Composite stair treads cost 3-4x wood treads because they require structural risers and matching trim to maintain the warranty.
Composite boards 2-3x wood price per square foot at the material level
12-inch OC joist spacing vs 16-inch OC adds ~25% more framing lumber
Hidden fastener systems add $1-$2 per square foot in materials plus 20-30% labor
Picture-frame and breaker boards add 10-20% to material cost
Composite stair treads cost 3-4x wood treads to maintain warranty
3
Re-decking vs Full Composite Build
If your existing deck has sound framing but failing wood deck boards, re-decking with composite is dramatically cheaper than a full rebuild. Re-decking on existing framing runs $25-$40 per square foot installed, while a full rebuild from foundation up runs $40-$70 per square foot. On a 300-square-foot deck that’s $7,500-$12,000 for re-decking vs $12,000-$21,000 for a full rebuild — saving 40-50% by reusing the existing structural frame.
The framing inspection is critical before committing to re-decking. Rotten joists, undersized beams, or sub-code post footings cancel the savings entirely — if the contractor opens the deck and finds structural rot, you’re paying for both the demo and the rebuild. The other gotcha: composite manufacturers require 12-inch on-center joist spacing for warranty validity, while most existing wood decks are framed at 16-inch OC. Sistering additional joists between the existing 16-inch OC framing to bring spacing to 12-inch OC adds $5-$10 per square foot, which closes most of the re-decking savings on full-area composite installs.
Re-decking on existing framing saves 40-50% over a full rebuild — but only if the framing is sound and you account for the cost of sistering joists from 16-inch to 12-inch on-center spacing for composite warranty compliance.
1
Inspect the framing first
Have a deck builder open 2-3 boards and inspect joists, beam, and posts for rot, splits, or undersizing.
Re-decking $25-$40/sqft vs full rebuild $40-$70/sqft. Budget for sistering if going from 16 to 12 inch OC.
4
Choose your composite line
Trex Enhance for value, TimberTech Composite for mid-range, Trex Transcend or Azek PVC for premium.
5
Get manufacturer-certified installer
Trex Pro or TimberTech Platinum certification preserves the 25-50 year warranty.
4
Total Cost of Ownership: Composite vs Wood Over 25 Years
Composite decking is dramatically more expensive upfront than wood, but the 25-year ownership math closes much of the gap and often flips it. A 300-square-foot pressure-treated pine deck at $7,000 install needs stain every 2-3 years; over 25 years that’s 8-10 stain cycles totaling $2,500-$12,000 in materials and labor. Total 25-year ownership cost on pine: $9,500-$19,000. The same deck in capped composite at $13,500 install has zero stain or seal cost and $0-$500 in misc maintenance over 25 years. Total 25-year ownership cost on composite: $13,500-$14,000.
On premium PVC the math is similar: $16,500-$21,000 install with essentially zero recurring maintenance, vs $9,500-$19,000 for wood. Composite or PVC consistently delivers lower 25-year total cost on a maintained-deck-vs-maintained-deck basis. The 2024 Cost vs Value Report shows wood decks recoup 83% at resale and composite 68% — a percentage advantage to wood — but the absolute dollars added show composite at $9,325 average resale uplift vs $8,559 for wood, since the higher upfront cost translates to a higher uplift even at lower percentage recoup. Critically, both numbers assume well-maintained decks; a poorly maintained wood deck near end-of-life often shows zero or negative resale lift on the home appraisal report.
Decision framework: own 10+ years and dislike maintenance, choose composite. Own 5-7 years and want the highest percentage ROI, wood looks better on the resale math but you’ll be staining it twice during your ownership. The deck building cost calculator covers wood-deck pricing in detail; the sunroom addition cost calculator covers the next-tier outdoor-living upgrade if a composite deck isn’t enough.
The summary table below compares 25-year total ownership cost by material on a 300-square-foot footprint, including install, recurring maintenance, and end-of-life replacement if applicable. Wood requires staining every 2-3 years and typically a midlife panel replacement at year 12-15; composite requires essentially zero recurring spend over the same window.
25-year total ownership cost comparison for a 300-square-foot deck, 2026.
Material
Install (300 sqft)
25-yr maintenance
25-yr total
Resale uplift
Pressure-treated pine
$7,000
$2,500-$12,000
$9,500-$19,000
$8,559
Capped composite (Trex Enhance)
$12,000
$0-$500
$12,500
$9,325
TimberTech Composite
$13,500
$0-$500
$14,000
$9,325
Premium PVC (Azek)
$16,500-$21,000
$0
$16,500-$21,000
$9,325+
5
Choosing a Manufacturer-Certified Installer (And Why It Matters)
Composite manufacturers (Trex, TimberTech, Azek) all offer installer certification programs — Trex Pro, TimberTech Platinum, and AZEK Premier are the three major ones. Certified installers complete brand-specific training on installation requirements: 12-inch on-center joist spacing, end-gap spacing for thermal expansion, hidden fastener placement, picture-frame border treatment, and stair tread requirements. The certification ensures the install meets the strict requirements that keep the 25-50 year warranty valid.
The premium for a certified installer typically runs 10-15% above generic deck builders. On a $13,500 composite deck install that’s $1,350-$2,025 more, which seems steep until you consider that improper joist spacing alone can void the entire 25-50 year warranty — a $5,000+ value hit on a typical premium deck. Improper end-gap spacing causes the boards to buckle in summer heat; missing picture-frame borders can cause water intrusion at the deck edges; and incorrect hidden fastener placement can void the surface-finish warranty.
When vetting installers, ask for the manufacturer certification number and verify it on the brand’s website (Trex.com, TimberTech.com, Azek.com all maintain certified-installer directories). Also request 3 recent local references for composite-specific installs (not wood deck references) and call them. A wood-deck builder with 20 years of cedar experience is not automatically qualified to install Trex correctly — the install practices are genuinely different and the warranty terms reflect that.
A practical hiring sequence for composite projects: pick the brand and product line first based on warranty term and color preference, then search the manufacturer’s certified-installer directory for installers in your zip code, then request 3 written bids from those certified installers. Avoid the temptation to take a generic-deck-builder bid 15% below the certified-installer pack — that 15% saving disappears the first time you call about a buckled board or color fade and the manufacturer denies the claim due to non-certified install. The certification premium is genuinely cheap insurance against warranty disputes.
A certified installer premium of $1,350-$2,025 on a $13,500 composite deck install protects a $5,000+ warranty value. Always use Trex Pro, TimberTech Platinum, or AZEK Premier for any composite or PVC build.
Trex Pro program: brand-specific install training, certified installer directory at Trex.com
TimberTech Platinum: similar program for TimberTech and Azek installs
AZEK Premier: top tier with deepest training requirements
Certified installer premium: 10-15% over generic deck builders
Improper joist spacing voids 25-50 year warranty (a $5,000+ value hit)
Verify certification number on manufacturer website before signing
Request 3 composite-specific local references and call them
6
Composite Deck Red Flags and Common Mistakes
Composite-specific buyer mistakes cluster around four themes: using a wood-only crew, choosing the wrong product line for the climate, skipping the hidden fastener system, and not pricing the framing changes properly. The wood-crew mistake is the most expensive: composite manufacturers require brand-specific install practices that differ meaningfully from wood deck practices. A wood-only contractor who installs Trex with 16-inch OC joist spacing, top-screw fasteners, and no picture framing will void the 25-50 year warranty on day one.
Product line selection matters more than most buyers realize. Trex Enhance is the value-tier line and the right pick for budget builds, but it has a smaller color palette and shorter 25-year warranty than Trex Transcend’s 25-year-plus-fade-and-stain warranty. TimberTech Composite carries similar terms; TimberTech Azek PVC carries a 50-year warranty because the fully-synthetic PVC composition handles UV and water dramatically better. In hot southern climates, the lighter colors and PVC tier often outperform darker composite blends that hold heat.
Re-decking economics: many buyers skip the framing inspection and assume their existing wood-deck framing will work for composite. Most existing decks are framed at 16-inch OC; composite warranties require 12-inch OC. Sistering joists between the existing 16-inch OC framing to bring spacing to 12-inch OC adds $5-$10 per square foot — which often turns a "savings" re-decking project into a near-full-rebuild cost. Always have the framing inspected and the spacing measured before committing to re-decking with composite.
Always verify the contractor’s composite-specific certification (Trex Pro, TimberTech Platinum, AZEK Premier) before signing. Wood-only crews using wood-deck practices on composite installs is the #1 cause of voided composite warranties.
Using a wood-only crew on composite — voids 25-50 year warranty
Reusing 16-inch OC framing without sistering for composite
Choosing Trex Enhance (25 yr) when TimberTech Azek (50 yr) better fits 30+ year ownership
Skipping hidden fastener system to save $2 per square foot — board surface looks dated
Not comparing re-decking ($25-$40/sqft) vs full rebuild ($40-$70/sqft) when framing is sound
Picking lowest brand without checking warranty terms (Trex Enhance vs TimberTech Azek)
Skipping picture framing on premium installs — board ends visible at perimeter
This calculator is provided for informational and educational purposes only. Results are estimates and should not be considered professional financial, medical, legal, or other advice. Always consult a qualified professional before making important decisions. UseCalcPro is not responsible for any actions taken based on calculator results.
