1. Calculate
Choose your project scope and see the estimated price range.
Be the first to rate this calculator
No ratings yet
Construction
Composite Deck Cost Calculator
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.
No signup for the estimateUses current market ratesYour result stays visible
Calculate my projectInstant project estimate
Tell us what you need
The estimate is free. Additional details are optional.
Deck Size
Brand & Features
Location
Your project estimate
Complete the project details and calculate to see a price range and next steps.
Clear next step
From initial idea to detailed scope
2. Review
Understand the cost drivers and what impacts your final quote.
3. Compare
Carry your scope into a local quote request if you choose.
What You'll Need
Wensilon #10 * 3" Deck Screws, (137pcs) 2 lbs.Exterior Wood Screws, Rust Resistant epoxy Coated, Bronze, T25 Star Bit
$9.99
View on Amazon
Bobibbi Deck Screws #10 x 2-1/2’’, T25 Star Torx Drive Flat Head Wood Screws, Tan, 5lb
$26.99
View on AmazonAs an Amazon Associate, we earn from qualifying purchases.
Price as of Jul 24, 2026. Product prices and availability are accurate as of the date indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
Related calculators
Deck Building Cost CalculatorCompare composite against pressure-treated, cedar, and redwood wood decks.Pergola Build Cost CalculatorPair a composite deck with a pergola for a complete outdoor-living upgrade.Screen Porch Cost CalculatorConvert a composite deck into a screened porch for $2,000-$8,000.DIY Deck Material CalculatorCount boards, joists, and fasteners to sanity-check contractor material lines.Asphalt Shingle Roof Cost Calculator — 2026 Installed EstimatorEstimate 2026 asphalt shingle roof replacement cost by size, region, pitch, and shingle tier. A typical 2,000 sqft roof runs $5,700 to $18,000 installed.Outdoor Kitchen Install Cost Calculator — 2026 Modular Kitchen QuoteEstimate 2026 modular outdoor kitchen installation cost. Prefab island kits run $4,000-$18,000 installed; full modular setups reach $12,000-$30,000 nationwide.
Frequently Asked Questions
QHow 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 |
QHow 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
QIs 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
QWhy 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
QDo 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
QHow 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.
- Re-deck (reuse frame): $25-$40/sqft
- Full rebuild: $40-$70/sqft
- 300 sqft re-deck: $8,000-$14,000
- Joist inspection: non-negotiable
- Rotted joists: re-deck becomes full build
Example Calculations
1300 sqft Trex Enhance, ground-level, Midwest
Inputs
Size300 sqft
BrandTrex Enhance
RailingsComposite
RegionMidwest
Result
Typical installed quote$9,000 – $13,000
Boards + framing~$6,500
Railings~$2,000
2400 sqft TimberTech Azek elevated, Northeast
Inputs
Size400 sqft
BrandTimberTech Azek (PVC)
RailingsAzek + cable rail
RegionNortheast
Result
Typical installed quote$24,000 – $32,000
Azek premium tier+20% vs Trex Transcend
Elevated adder+20-40%
3200 sqft re-deck on existing frame, West Coast
Inputs
Size200 sqft
BrandTrex Transcend
RailingsReuse existing
RegionWest Coast
Result
Typical installed quote$7,000 – $11,000
Boards only~$4,000
Labor (no framing)~$3,500
Re-decking saves 30-40% over a full build — only valid if joists pass inspection.
Formulas Used
Composite deck cost driver breakdown
Quote = Boards + Framing + Labor + Railings + CertificationTypical composite quote = board tier (Enhance $5-$7/sqft to Azek $9-$13/sqft) + framing (or reuse for re-deck) + labor + hidden fasteners + picture framing + railings (10-20% of base) + certification premium (10-15% for Trex Pro / TimberTech Platinum).
Where:
Boards= Trex Enhance $5-$7, Transcend $10-$16, TimberTech Azek $9-$13/sqftFraming= New pressure-treated, or reuse existing for 30-40% re-deck savingsLabor= Crew hours × local rate; 12 in OC joist spacing adds 25% laborRailings= Composite, metal, or cable rail; 10-20% of build costCertification= Trex Pro / TimberTech Platinum +10-15% but preserves 25-50 year warrantyComposite 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 $21,000+. Pricing has risen 8-12% across all brands since 2023 from PVC and capping-material cost increases plus labor inflation — always anchor against current 2026 ranges, not multi-year-old quotes.
| Brand / Line | Material ($/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
- Premium colors (deep browns, greys, woodgrain blends) +10-15% over baseline tan/grey
- 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.
- 2
Confirm joist spacing
Composite warranties require 12-inch OC. Existing 16-inch OC framing needs sistered joists ($5-$10 per sqft).
- 3
Run the math
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.
| 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
Related Resources
Composite vs. Wood Deck Cost in 2026: Which Saves More Long-Term?
Read our guide
How to Build a Deck: Complete Materials & Cost Calculator Guide
Read our guide
Cost of Brakes and Rotors Installed in 2026 (Parts + Labor)
Read our guide
Deck Building Cost
Pergola Build Cost
Screen Porch Cost
DIY Deck Calculator
Sunroom Addition Cost
Explore Construction Calculators
Price materials and labor for composite decks, pergolas, porches, and more outdoor-living projects.
Last Updated: Jul 24, 2026
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.