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Cedar vs Composite Decking: The Real 2026 Comparison (US, UK, Australia & Canada)

By Sam Redfield · thebuildcost.com · October 5, 2026

Quick Answer: Cedar vs Composite in 2026 (TL;DR)

Cedar and capped composite often land in the same installed price range in 2026 — the exact ratio depends on where you live. Here's the reality from each region's retail data:

*UK and AU cedar availability is limited — see the regional sections for the alternatives homeowners actually buy (Siberian Larch, Spotted Gum, Merbau).

The real differentiator is maintenance over 20 years, not upfront cost. Cedar needs re-staining every 2-3 years and periodic board replacement. Composite needs occasional cleaning. See the 20-year math below for exact numbers.

The honest answer most guides won't tell you: if you're in the UK or Australia, "cedar vs composite" is often the wrong question — real cedar is barely sold there, and the alternatives (Siberian Larch, Spotted Gum, Merbau) change the math significantly.

What's the Real Difference Between Cedar and Composite?

Cedar: What It Actually Is

"Cedar decking" in 2026 means one of two different woods:

• Western Red Cedar (Thuja plicata): grown in British Columbia, Washington, Oregon. Naturally rot-resistant from its thujaplicin oils, dimensionally stable, with the classic reddish-brown color that fades to silver-grey if left untreated. Nearly all premium cedar decking in the US and Canada is Western Red.
• Eastern White Cedar (Thuja occidentalis): grown in Quebec, Ontario, New England. Lighter weight, with a tighter grain. Also naturally rot-resistant (traditionally used for fence posts and shingles for exactly that reason), though less commonly chosen for deck boards.

What makes cedar work as decking: it contains natural oils (thujaplicins) that resist insects and decay without pressure treatment chemicals.

What limits it: it's still a softwood. Dogs scratch it. Patio furniture dents it. UV light turns it grey in 6-12 months unless you stain it, and the sealant needs reapplying every 2-3 years.

Composite: What It Actually Is

"Composite decking" is a catch-all for several products in 2026:

• WPC (uncapped wood-plastic composite): ~50% recycled wood flour + ~50% HDPE plastic, no polymer shell. First-generation Trex, legacy Fiberon lines, generic imports. Cheaper but can absorb moisture through unsealed cuts.
• Capped composite (PE-cap): a WPC core wrapped in a hard polyethylene shell. Trex Enhance, TimberTech PRO, Fiberon Good Life (capped on 3 sides), Fiberon Sanctuary and Fiberon Concordia. The shell stops moisture, resists staining, and lets manufacturers offer long warranties. This is what most buyers now purchase, and it's what pricing in this guide refers to unless noted.
• PVC decking: 100% plastic, no wood content. TimberTech AZEK and Fiberon's Promenade and Paramount lines are the main options. Lighter, often cooler underfoot, typically the most expensive synthetic option.
• Mineral-based composite: Deckorators Vault, built on the Surestone technology — a mineral core, no wood. Lighter, highly stable, premium pricing.

Capped composite dominates the market, which is what we focus on in this comparison.

Why "Cedar vs Composite" Is the Wrong Question in UK and Australia

In the UK, Western Red Cedar is available through specialist timber merchants but rare at mainstream retailers. The practical "natural wood deck" option is Siberian Larch (Larix sibirica), which lasts 20-25 years, costs noticeably less than imported cedar, and is what builders typically quote.

In Australia, imported cedar is a specialty product. The native equivalent that dominates the hardwood deck market is Spotted Gum. Alongside it, Merbau (also sold as Kwila) is widely used — but note it's imported from Southeast Asia and Papua New Guinea, not native, and has sustainability concerns on some sources. Blackbutt is another native option. Standard deck board width in Australia is 86mm.

In Canada, cedar is king. British Columbia produces most of the world's Western Red Cedar, and that local supply keeps BC and Western Canadian prices well below composite — the one clean exception to the "overlap" pattern.

In the US, both are widely available at Home Depot, Lowe's, Menards, and lumber yards nationwide.

2026 Cost Comparison: Cedar vs Composite by Region

All prices below are installed cost (materials + labor). "Boards only" columns represent deck boards (joists and framing not included).

🇺🇸 United States (per square foot)

Sources: Home Depot, Lowe's, HomeAdvisor, HomeGuide (verified September 2026).

🇬🇧 United Kingdom (per m²)

Sources: Wickes, B&Q, Composite Prime, Checkatrade, MyJobQuote (verified September 2026).

🇦🇺 Australia (per m²)

Sources: Bunnings, Brite Decking, hipages (verified September 2026).

🇨🇦 Canada (per square foot)

Sources: Home Depot Canada, RONA, HomeStars (verified September 2026).

Cedar Cost by Deck Size: 8 Scenarios Across 4 Regions

Below are cedar installed costs for 8 standard deck sizes. For composite equivalents, see our complete composite decking cost guide.

*UK column uses Siberian Larch (£110-£180/m² installed) as the realistic cedar alternative. AU column uses Spotted Gum (AUD $200-320/m² installed).

Below ~150 sq ft, maintenance differences matter less in absolute dollars. Above 400 sq ft, the 20-year maintenance math (next section) becomes a significant factor.

20-Year Total Cost of Ownership: The Real Math

Let's compare apples to apples on a 320 sq ft (16×20) deck in the United States, using the middle of each material's range.

The Setup

• Cedar: $30/sq ft installed → $9,600 upfront
• Composite (capped, mid-grade): $30/sq ft installed → $9,600 upfront

Same starting point. The 20-year difference is almost entirely in maintenance.

Cedar's Maintenance Cost (DIY vs Pro)

Cedar 20-year totals:

• Upfront + DIY maintenance: $9,600 + $5,440 = $15,040
• Upfront + Pro maintenance: $9,600 + $13,950 = $23,550

Composite's Maintenance Cost

Composite 20-year total: $9,600 + $1,100 = $10,700

Side-by-Side

The verdict:

• If you do all cedar maintenance yourself: composite saves ~$4,300 over 20 years.
• If you pay a pro for the restoration cycles: composite saves ~$12,850.
• Worst case for cedar: a full replacement in year 18 adds $9,600, but leaves you with a nearly new deck with ~15 years of life left (worth roughly $8,500). The net extra cost is about $1,100 if that value shows up in your sale price, or the full $9,600 if it doesn't. That puts the DIY cedar total at roughly $16,100 to $24,640 over 20 years.

Important caveat: this math uses the middle of each material's price range. In Canada, cedar's lower price pulls the balance back in cedar's favor on upfront cost. In the UK and Australia, where imported cedar carries a premium, composite's advantage grows.

The maintenance gap is where composite wins. The upfront gap depends on your region.

The Honest Downsides of Cedar Decking

Maintenance You Can't Skip

Cedar is not "stain it and forget it." A sealed cedar deck needs:

• Annual inspection for lifted or split boards
• Deep clean every spring (deck brightener + stiff brush)
• Re-seal every 2-3 years ($150-250 in materials, 1-2 days DIY)
• Full strip and re-stain every 5-7 years ($400-800 DIY, $1,500-2,500 pro)

Skip any of these for two years in a row and the wood starts to grey, split, and absorb moisture. If you want cedar to stay reddish-brown rather than silver, stain is non-negotiable — leave it untreated and UV turns it grey within 6-12 months. That's a feature for some owners (the "coastal" look) and a disappointment for others.

Lifespan Reality: 15-20 Years, Not 30

Cedar sellers love to cite "30+ year lifespan" based on siding or roofing. Decking is a different story — foot traffic, furniture, grill heat, standing water, and winter freeze-thaw take a bigger toll than vertical cladding ever faces.

Realistic lifespans by climate:

• Dry climates (Arizona, Alberta, Perth): 18-25 years with excellent maintenance
• Temperate (Pacific Northwest, Ontario, southern UK): 15-20 years
• Hot and humid (Florida, Queensland): 10-15 years
• Freeze-thaw (Minnesota, Quebec): 12-18 years

It's a Softwood: Scratches, Dents, Splinters

Western Red Cedar has a Janka hardness of 350 — one-third as hard as oak, one-sixth as hard as Spotted Gum. In practice:

• Dog claws leave visible marks within a year
• Dropping a wrench dents the surface permanently
• Dragging patio furniture creates grooves
• Splinters develop as the wood weathers — a real concern for barefoot kids

Insect Vulnerability Over Time

Cedar's natural oils resist insects — but not forever. The oils leach out over 7-10 years, especially in boards that get wet repeatedly. After that, cedar is as vulnerable to carpenter ants and termites as any softwood. Older cedar decks in the US South and parts of Australia frequently show insect damage by year 12-15.

The Honest Downsides of Composite Decking

Heat Retention in Summer Sun

This is composite's biggest real-world problem. On a 90°F (32°C) sunny day, a dark composite deck surface can reach 150-170°F (65-77°C) — hot enough to burn bare feet. Lighter colors run 15-25°F cooler but still get uncomfortable.

Cedar, by comparison, stays within 20-25°F of ambient air temperature even in direct sun. If you live anywhere with regular 85°F+ summer days — Arizona, Texas, Queensland, Western Sydney, Perth — this is a genuine quality-of-life issue.

Mitigation: choose light colors, add shade sails, or consider lines marketed with heat-mitigating technology. PVC options like TimberTech AZEK's premium ranges and composite options like Trex Transcend Lineage both claim meaningful heat reduction versus standard composite — effects vary by product and color, so check specific SKUs.

Higher Upfront Cost in Some Regions

In Canada and parts of the US with cheap local cedar, composite costs more upfront by $3,000-$6,000 on a mid-sized deck. In the UK, Australia, and most US markets, composite and mid-grade cedar overlap — but premium capped composite and PVC still carry a real premium.

Not Truly Maintenance-Free

Capped composite resists stains better than any wood, but:

• Mould and mildew grow on shaded, damp boards (especially under furniture) — plan for 2-3 cleans per year
• Food and drink stains need to be wiped within 24-48 hours; dried wine, grease, and some sunscreens can leave marks
• Fading does happen in the first 2-3 years. However, major brands include multi-decade Fade & Stain coverage — Trex includes a 25-year Fade & Stain promise within its limited residential warranty, Fiberon Sanctuary carries up to 40 years, TimberTech PRO offers 30 years, and TimberTech AZEK (PVC) and Fiberon Concordia extend to 50 years. Read the specific product warranty for what's covered
• Scratches from grill drops or heavy furniture do occur, and unlike wood, you can't sand them out

Composite is Significantly Heavier Than Cedar

A capped composite board weighs roughly 2× what a cedar board of the same size weighs. For DIY installations, this matters: handling, cutting, and lifting are more fatiguing, and your framing needs to be rated for the extra load.

Which Is Better: Cedar or Composite?

Choose Cedar If:

1. You live in Canada or the US Pacific Northwest where local supply makes cedar significantly cheaper than composite
2. You enjoy weekend DIY projects and don't mind spending 1-2 weekends per year on upkeep
3. You're planning to sell within 5-8 years AND cedar is cheaper than composite in your area — the upfront savings matter, but only if there are savings
4. You want the authentic natural wood look and smell that no composite can match
5. Your deck is small (under 200 sq ft) — maintenance is quick and affordable at this scale
6. You live in a dry climate (Arizona, Colorado, Alberta, interior Australia) where cedar lasts closer to the top of its lifespan range

Choose Composite If:

1. You want to install it once and forget it for 25+ years
2. If kneeling, sanding, and repeated weekend maintenance will get harder for you over the next decade
3. You live in a humid, high-UV, or coastal climate where cedar maintenance becomes a chore
4. You have the upfront cash or financing to absorb any price premium in your region
5. Your deck is 400+ sq ft — the labor cost of maintaining a large cedar deck adds up fast
6. You're planning to stay 15+ years — composite's lower lifetime cost compounds in your favor

Choose Neither — Alternatives Worth Considering

• Thermally modified wood — Thermory and Lunawood (available in US and UK), Americana (US), Brimstone (UK). ~$12-18/sq ft materials.
• Chemically modified wood — Kebony (furfurylation process) and Accoya (acetylation). Different technology than thermally modified, 25-50 year lifespans.
• Spotted Gum or Blackbutt (Australia): native hardwoods, 30+ year lifespan, often outlast imported cedar at similar prices.
• Siberian Larch (UK): the practical cedar alternative most British builders quote. 20-25 year lifespan at £30-50/m² materials.
• PVC decking (TimberTech AZEK, Fiberon Promenade) or mineral composite (Deckorators Vault with Surestone): no wood content, cooler in sun on premium ranges, highest price. ~$18-28/sq ft materials in the US.
• Pressure-treated pine with annual stain: the cheapest real deck, 10-15 year lifespan, $2-5/sq ft materials. Honest option on a tight budget. Modern ACQ pressure-treating has been standard since 2004 and is safe for residential contact.

The "Cedar-Look Composite" Hybrid Solution

Modern capped composites can look convincingly cedar-like from six feet away. Three paths to the cedar aesthetic without the maintenance:

For Fresh Cedar Tones: Trex Enhance Naturals in "Toasted Sand" or TimberTech AZEK Vintage in "Mahogany"

Toasted Sand is a warm tan-brown, the closest Trex Enhance tone to fresh Western Red Cedar. For a deeper reddish-brown, TimberTech AZEK Vintage in Mahogany (a PVC board) goes further toward the red end. Trex sells $5 samples: hold one next to a real cedar board before committing. Trex Enhance is sold at Home Depot in the US and Canada, at Wickes in the UK (check which colors your store stocks), and through authorized resellers in Australia.

The catch: the texture is embossed, not sawn. Up close it looks like plastic trying to look like wood.

For Weathered Silver-Grey Cedar: Trex Enhance Naturals in "Rocky Harbor" or TimberTech AZEK Vintage in "Weathered Teak"

Rocky Harbor is actually a slate-grey with sand undertones — a close match for weathered cedar after it has turned silver. Weathered Teak holds that aesthetic even more deliberately as a PVC product and never changes.

The catch: PVC options don't feel like wood underfoot. More plastic-firm than wood-forgiving.

For a Budget Cedar Look: Fiberon Good Life or Sanctuary

Fiberon's entry-level Good Life and mid-tier Sanctuary lines both offer warm brown tones. Good Life is sold at Lowe's (Cottage is one of its warmer colors); check Sanctuary availability with local Fiberon dealers.

The catch: color variation is minimal from board to board — a cedar deck has knots and grain lines that vary; capped composite doesn't.

What You Gain, What You Lose

Going cedar-look composite instead of real cedar gets you:

• 25-year lifespan vs 15-20
• Zero re-staining labor
• No splitting, warping, insect vulnerability
• The cedar aesthetic at normal viewing distance

What you lose:

• The actual texture, scent, and feel of wood
• The patina — composite ages uniformly, wood ages with character
• Possible price premium (region-dependent)

Test-walk both at a Home Depot or Wickes showroom before deciding.

Cedar vs Composite vs Pressure-Treated: Quick Reality Check

When pressure-treated makes sense:

• Utility deck (storage, workshop access) where looks don't matter
• Budget firmly under $5,000 for a mid-sized deck
• Short-term property (plan to sell within 8 years)

When to skip PT and go cedar or composite:

• You'll see the deck from your kitchen window every day
• You plan to stay 10+ years — maintenance adds up

What Homeowners Actually Say: Reddit Reality Check

If you search "cedar vs composite" on Reddit, two subreddits dominate: r/decks and r/HomeImprovement. The patterns in advice are consistent.

What r/decks Pros Tend to Think

Experienced deck builders often recommend composite to clients because of callbacks: a cedar deck brings the builder back for stain and seal work every 3-5 years, which sounds like recurring revenue but is actually a hassle. Clients compare the maintenance cost to a replacement and relationships sour.

A common sentiment on the sub is that cedar makes sense for clients who insist on it, but composite becomes the default recommendation for anything over 300 sq ft — mainly because the maintenance problem goes away.

What r/HomeImprovement DIYers Tend to Regret

Cedar regrets:

• Underestimating the maintenance burden
• Choosing cedar for a shaded or wet-climate deck where it rotted faster than expected
• Not budgeting for board replacement starting year 8-10

Composite regrets:

• The heat issue — Arizona, Texas, and Queensland homeowners who can't walk barefoot in July
• Choosing the cheapest composite tier and running into first-generation WPC staining
• Scratches from furniture that no amount of cleaning fixes

The pattern: cedar regrets are about effort. Composite regrets are about setting. Both are predictable — the regrets happen when buyers don't match the material to their lifestyle and climate.

Regional Buying Guide

🇺🇸 United States

• Cedar: Local lumber yards in Pacific Northwest (best grades, lowest prices), Menards, Home Depot, Lowe's, RealCedar.com for premium cuts
• Composite: Home Depot (full Trex and TimberTech lineup), Lowe's (Fiberon Good Life and Concordia, including its Symmetry and Horizon collections; Trex; Deckorators)

🇬🇧 United Kingdom

• Siberian Larch: Travis Perkins, Jewson, specialist timber merchants (£30-50/m² materials)
• Imported Western Red Cedar: Silva Timber and regional specialist merchants
• Composite: Wickes own-brand entry-level and Trex Enhance, B&Q own-brand, Composite Prime (HD Deck Dual, HD Deck 3D+, HD Deck X and Pro Solid ranges — distributed through a reseller network), Ecoscape, Cladco

🇦🇺 Australia

• Native hardwoods: Spotted Gum and Blackbutt at Bunnings, Mitre 10, specialist yards (AUD $7-14 per linear metre, 86mm)
• Merbau/Kwila: widely available, cheaper, imported — check certification
• Composite: Bunnings (Ekodeck Essentials and Designer Series), Brite Decking, NewTechWood AU. Trex via authorized resellers like Hurfords

🇨🇦 Canada

• Cedar: Home Depot Canada, RONA, local BC mills (lowest prices), Turkstra Lumber (Ontario) for premium grades
• Composite: Home Depot Canada (Trex, TimberTech), RONA (Fiberon, Trex)

Installation Difficulty: DIY-Friendly or Pro Only?

Labor is a big part of an installed deck's bill, and how big depends on your region and your boards. Our composite decking cost guide sets out what the sources actually say. Here's how hard each material is to install yourself.

Cedar DIY Difficulty: Medium

Cedar is forgiving. Soft enough to cut with any circular saw, holds screws without pre-drilling in most cases, mistakes can be sanded or stained to blend.

What catches DIYers out: board selection (grades vary, cull warped stock at the yard), pre-staining before installation extends lifespan, and hidden fastener systems add 15-25% to material cost.

Realistic DIY timeline (320 sq ft): 2-3 weekends for an intermediate DIYer with a helper.

Composite DIY Difficulty: Easy (With One Rule)

Capped composite is actually easier than cedar — but you must respect the manufacturer's spacing requirements for expansion and contraction. Install too tight, and boards buckle in summer. Install too loose, and gaps gape in winter.

What catches DIYers out: over-tightening hidden fastener clips, ignoring temperature-based gap spacing charts, using the wrong fasteners (coated steel is Trex's standard; stainless steel is specified for coastal and corrosion-prone environments), and dulling blades fast (budget 2-3 carbide blades per 300 sq ft).

Realistic DIY timeline (320 sq ft): 2 weekends for an intermediate DIYer with a helper.

When to Hire a Pro

• Deck elevated more than 30 inches (safety codes, railing complexity)
• Permits and inspections required (most US jurisdictions above 30 inches or 200 sq ft)
• Attachment to the house with a ledger board — bad ledger installs are responsible for about 90% of deck collapses according to NADRA (the North American Deck and Railing Association)
• 1,000+ sq ft projects where DIY labor cost outweighs the savings
• If kneeling and repeated sanding will get harder for you over the next decade

For a flat ground-level deck under 400 sq ft with no house attachment, DIY is realistic for most intermediate-skill homeowners.

Environmental Impact: Which Is Actually Greener?

Cedar's Carbon Story

Cedar is a renewable resource that sequesters carbon as it grows. Western Red Cedar harvested from certified-sustainable BC forests regrows naturally; FSC and PEFC certifications verify the chain of custody.

Strengths: biodegradable at end of life, grows back on its own in managed forests, lower manufacturing energy, no synthetic chemicals in the base product.

Weaknesses: transport footprint (BC cedar shipped to Florida has a significant carbon tail), stains and sealers over 15-20 years add chemistry that's hard to quantify, old-growth cedar can't be truly replaced on human timescales.

Composite's Recycled Content

Major composite manufacturers heavily market recycled content. Trex claims 95% recycled materials in its boards (plastic film + wood flour from manufacturing waste). The AZEK Company reports diverting over 500 million pounds of waste material annually across its product lines.

Strengths: diverts plastic and wood waste from landfill, zero maintenance chemistry over 25-30 years, dimensional stability means no board replacement waste.

Weaknesses: not recyclable through municipal programs at end of life, manufacturing is energy-intensive even with recycled inputs, micro-plastic shedding into runoff is understudied, and the polymer cap is a petroleum product.

End-of-Life Disposal

A cedar deck decomposes back to soil. A composite deck goes to landfill, gets chipped as fill, or waits for a recycling market that may or may not develop at scale.

If end-of-life matters most: cedar wins. If reduced maintenance chemistry over 25 years matters most: composite wins. Neither is a clear environmental champion.

Frequently Asked Questions

Get Your Exact Cost Estimate — Free Composite Calculators

The numbers in this guide are regional averages. For your specific project, use our free calculators (currently available for composite decks across the four regions):

• 🇺🇸 US Composite Decking Calculator
• 🇬🇧 UK Composite Decking Calculator
• 🇦🇺 AU Composite Decking Calculator
• 🇨🇦 CA Composite Decking Calculator

(A dedicated cedar decking calculator is on our roadmap.) Each calculator is free, needs no signup or email, and breaks down materials quantities and cost, so you can compare a contractor's materials line against it. Labour isn't included.

Related Guides

• 📖 How Much Does Composite Decking Cost in 2026? — our full composite pricing deep-dive across all 4 regions with 32 deck size scenarios
• 🎨 Paint Coverage Calculator — if you're staining a cedar deck, estimate the stain quantity you'll need

Published October 2026. Last reviewed October 14, 2026.

Written by Sam Redfield for thebuildcost.com. If cedar or composite prices near you don't match ours, or your own deck has aged differently from what we describe, email corrections@thebuildcost.com.