Composite Deck Builders in Burnaby: Top Options for 2026

Burnaby gets roughly 1,200mm of rain per year. If you've watched a pressure-treated deck turn green with algae by its second winter here, you already know why composite decking is worth a serious look. The question isn't really if composite makes sense in this climate — it's which brand, which builder, and how much you'll actually pay.

Here's what Burnaby homeowners need to know before committing to a composite deck build in 2026.

Why Composite Decking in Burnaby

Wood decks in Burnaby fight a losing battle against moisture. The mild temperatures that keep snow away also keep mold and algae thriving from October through April. A cedar or pressure-treated deck in the Metrotown or Edmonds area will need annual power washing and resealing just to stay safe underfoot — skip a year and you're looking at slippery, discolored boards.

Composite decking solves the core problem. Modern composite boards are capped on all sides with a polymer shell, which means moisture can't penetrate the core. That translates to real benefits for Burnaby specifically:

• No mold or algae growth penetrating the board surface — it washes off with soap and water
• No annual staining or sealing — a huge time and cost savings over 10+ years
• No splinters or warping from constant wet-dry cycles
• Fade resistance even with Burnaby's summer UV exposure on south-facing yards in areas like Capitol Hill or Burnaby Heights
• Slip-resistant textures built into the board surface — critical when your deck is wet eight months of the year

The tradeoff? Higher upfront cost. But in a climate that punishes wood this aggressively, composite typically pays for itself within 7-10 years in saved maintenance alone. For a deeper comparison of the best composite decking brands available in Canada, we break down durability ratings and warranties side by side.

Top Composite Brands Available in Burnaby

Not all composite is created equal. Here's what Burnaby builders most commonly install, and what separates each tier.

Premium Tier

• Trex Transcend & Trex Signature — The most widely available brand in the Lower Mainland. Trex Transcend uses a high-performance polymer cap and comes with a 25-year structural warranty plus 25-year fade & stain warranty. Boards run 1" thick and come in 12', 16', and 20' lengths. Color options lean natural — Havana Gold, Spiced Rum, Lava Rock.
• TimberTech PRO (AZEK) — A step up in cap thickness. TimberTech's polymer cap is roughly 4x thicker than standard composites, offering better scratch resistance. Their Legacy and Reserve lines are popular with Burnaby builders doing higher-end projects in neighborhoods like Deer Lake or Forest Hills. 30-year fade & stain warranty.
• Fiberon Paramount PVC — Full PVC (not wood-composite), meaning zero organic material in the core. Best moisture resistance money can buy. Lighter boards make it easier to work with on elevated decks.

Mid-Range Tier

• Trex Enhance — Trex's entry composite line. Same capping technology as Transcend but fewer color options and a slightly thinner cap. 25-year warranty still applies. A solid choice if you want Trex reliability at $8-12/sqft less than Transcend.
• TimberTech Edge — The budget-friendly TimberTech option. Scalloped board profile (hollow underside) reduces material cost. Works well for ground-level decks.
• Fiberon Good Life — Decent entry composite with a protective cap on three sides. The exposed bottom edge is a minor concern in Burnaby's climate — make sure your builder provides adequate ventilation underneath.

What to Avoid

Stay away from uncapped composite — older-style boards without a polymer shell. They absorb moisture like a sponge and were responsible for most of the "composite decking is terrible" complaints from the early 2000s. Any reputable Burnaby builder should be using fully capped product exclusively. For more on how the best composite decking brands stack up in Ontario and across Canada, that guide covers detailed specs.

Composite Deck Costs in Burnaby

Pricing for a composite deck in Burnaby depends on the brand, deck size, complexity (stairs, multi-level, railings), and your builder's schedule. Here are 2026 installed prices in CAD based on current Lower Mainland market rates:

What Drives the Price Range

The spread between $50 and $90 per square foot is significant. Here's what pushes you toward the higher end:

• Elevated decks requiring full post-and-beam substructure — common in Burnaby's hilly areas like Burnaby Mountain or Capitol Hill
• Multi-level designs with transitions and additional framing
• Composite or aluminum railings instead of basic wood railings ($40-80/linear foot installed)
• Built-in lighting, benches, or planters
• Summer scheduling — dry season bookings (June through September) fill fast. Builders often charge a premium or are simply unavailable. Book in winter for a summer build to get better pricing and guaranteed availability

A straightforward single-level composite deck with standard railings in a flat Edmonds or Metrotown backyard will land closer to $50-65/sqft. A multi-level showpiece overlooking the mountains from a Burnaby Heights lot? Expect $75-90/sqft or more.

For homeowners comparing costs across different deck sizes, our guide on 20x20 deck costs provides useful benchmarks you can scale to your project.

How to Find a Certified Installer in Burnaby

Composite decking is only as good as the installation. Improper gapping, inadequate ventilation underneath, or wrong fastener choices void warranties and cause real problems — especially in a wet climate.

Check Manufacturer Certification

The major brands maintain contractor networks:

• TrexPro Platinum and TrexPro Gold — Trex's tiered installer program. Platinum contractors have completed advanced training and maintain high volume. Ask for their TrexPro ID number and verify it.
• TimberTech Registered Contractors — Similar program through AZEK/TimberTech. Registered contractors can offer extended labor warranties.
• Fiberon Approved Installers — Fiberon provides training materials but their contractor program is less structured than Trex or TimberTech.

Verify These Before Signing

• WorkSafeBC coverage — Non-negotiable in British Columbia. Ask for their account number.
• Burnaby business license — Required for any contractor working in the city.
• Liability insurance — Minimum $2 million is standard for residential deck work in BC.
• Previous composite builds in Burnaby — Ask specifically about composite experience, not just general deck building. The installation techniques differ from wood.
• Written warranty on labor — Material warranties come from the manufacturer, but labor should be warranted by your builder for at least 2 years.

Get Multiple Quotes

Three quotes is the standard advice, and it applies here. But pay attention to what each quote includes. One builder might quote Trex Enhance at $58/sqft while another quotes TimberTech PRO at $72/sqft — those aren't comparable. Make sure quotes specify the exact brand and product line, board dimensions, fastener system, and substructure material.

Use PaperPlan to visualize different decking materials on your own home before committing — it helps you narrow down colors and styles before requesting quotes, so you're comparing apples to apples.

If you're looking for a broader list of the best deck builders in Burnaby, that guide covers vetted contractors across all materials.

Composite vs Wood: Which Handles Burnaby's Rain Better?

This is the practical question. Burnaby's climate — frequent rain, mild temperatures year-round, minimal freeze-thaw — creates specific challenges for each material.

Pressure-Treated Wood

• Pros: Lowest upfront cost ($30-55/sqft installed). Easy for any contractor to work with. Can be stained any color.
• Cons in Burnaby: Requires annual sealing to prevent moisture damage. Algae and mold growth is constant — you'll power wash at least once a year. Boards warp and crack within 5-8 years without diligent maintenance. Splinters develop as the surface degrades. Realistic 10-15 year lifespan with maintenance; less without it.
• True cost over 20 years (300 sqft deck): $9,000-$16,500 initial + $500-800/year maintenance = $19,000-$32,500

Cedar

• Pros: Naturally rot-resistant (better than pressure-treated). Beautiful appearance when maintained. Lighter weight.
• Cons in Burnaby: Still needs annual sealing and cleaning. The natural oils that resist rot deplete faster in Burnaby's constant moisture. Cedar turns grey within a single season if left untreated. Costs more than pressure-treated but shares the same maintenance demands. Realistic 15-20 year lifespan with consistent care.
• True cost over 20 years (300 sqft deck): $12,000-$19,500 initial + $400-700/year maintenance = $20,000-$33,500

Composite

• Pros: Virtually no maintenance beyond occasional soap-and-water cleaning. No mold penetration. No warping or cracking. Slip-resistant texture stays consistent. 25-30 year warranties are standard. Consistent appearance year after year.
• Cons in Burnaby: Higher upfront cost. Can feel warmer underfoot in direct summer sun (less of an issue here than in hotter climates). Limited ability to sand or refinish surface damage. Color choices are locked in — you can't re-stain composite.
• True cost over 20 years (300 sqft deck): $15,000-$27,000 initial + $50-100/year cleaning = $16,000-$29,000

The math is clear. Over a 20-year period, composite is often the same price or cheaper than wood when you factor in Burnaby's maintenance demands. And that doesn't account for your time or the hassle of annual sealing and staining.

For homeowners weighing a complete backyard renovation timeline, understanding these material lifespans helps you plan the full project sequence.

Maintenance & Warranty

What Composite Maintenance Actually Looks Like in Burnaby

Despite the "zero maintenance" marketing, composite decks in Burnaby need some attention:

• Twice yearly: Sweep leaves and debris. Organic material sitting on composite boards can leave tannin stains if left too long — particularly in fall under trees common in areas like Deer Lake or Burnaby Central Park adjacencies.
• Once yearly: Wash with warm soapy water or a composite deck cleaner. A soft bristle brush handles most surface buildup. You can use a pressure washer on a low fan setting (under 1500 PSI) — keep the nozzle at least 8 inches from the board.
• As needed: Clean food and grease spills promptly. These are the one thing that can stain composite if left to sit.
• Never needed: Staining, sealing, sanding, or painting.

Understanding Warranty Coverage

Composite warranties sound impressive but have important details:

Important for Burnaby homeowners: Most manufacturer warranties require adequate ventilation underneath the deck. The standard is a minimum of 40% open area beneath the deck for air circulation. Burnaby's moisture levels make this non-negotiable — a ground-level deck built tight to wet soil with no airflow can develop issues that void your warranty. Make sure your builder plans for this specifically.

Also note: warranties typically prorate after year 10-15, meaning you'd receive a declining percentage of material cost, not full replacement. Read the fine print.

Permits and Building Code in Burnaby

Before construction starts, know the rules:

• Burnaby requires a building permit for decks over 24 inches above grade or over 100 square feet. Most composite deck projects will trigger at least one of these thresholds.
• Frost line depth in Burnaby is 12-24 inches — footings must extend to this depth.
• Railings are required on any deck surface more than 24 inches above grade, with a minimum height of 42 inches (per BC Building Code).
• Contact the City of Burnaby Building Department for your specific property — setback requirements and lot coverage limits vary by zoning.
• Permit processing in Burnaby typically takes 2-4 weeks for straightforward deck applications. Factor this into your timeline, especially if you're targeting a summer build.

Your builder should handle the permit application, but verify this is included in their scope of work. Some contractors quote the build separately from permits and engineering.

For an overview of how permits work for attached vs freestanding decks, that guide explains the key differences that affect your application.

Frequently Asked Questions

How long does a composite deck last in Burnaby's climate?

25-30+ years with minimal maintenance. Burnaby's mild temperatures are actually favorable for composite — the material doesn't experience the extreme freeze-thaw cycling that shortens its lifespan in colder climates. The rain is constant, but fully capped composite boards handle moisture without degradation. Your substructure (typically pressure-treated lumber or steel) is the more likely point of failure, so make sure your builder uses ground-contact rated lumber (UC4A minimum) for any framing close to soil.

What does a composite deck cost in Burnaby in 2026?

Expect $50-85 per square foot CAD fully installed depending on the brand and complexity. A standard 300 square foot single-level deck runs $15,000-$25,500 CAD with mid-range to premium composite. Add $3,000-$8,000 for stairs, railings, and built-in features. Premium brands like Trex Transcend or TimberTech PRO push installed costs to $55-90/sqft. Always get itemized quotes — "composite deck" covers a wide range of products and price points.

Is composite decking slippery when wet?

Modern capped composite boards include textured, slip-resistant surfaces specifically designed for wet conditions. This is a significant improvement over smooth wood decks that become dangerously slick with algae in Burnaby's rainy season. That said, any surface covered in wet leaves or moss can be slippery — keep your deck clear of organic debris and you won't have traction issues.

When should I book a composite deck build in Burnaby?

Book in late winter (January-March) for a summer build. Burnaby's dry building season runs June through September, and experienced builders fill their summer schedules months in advance. Booking early gives you priority scheduling and sometimes better pricing. Some builders will install composite decking in the shoulder seasons (April-May, October) — rain delays will extend the timeline, but the work itself isn't compromised. Avoid November through February for outdoor construction if possible.

Do I need a permit for a composite deck in Burnaby?

Yes, in most cases. The City of Burnaby requires a building permit for decks over 24 inches above grade or over 100 square feet. Since most functional composite decks exceed these thresholds, plan on pulling a permit. The material itself (composite vs wood) doesn't change the permit requirements — it's the size and height that matter. Budget $200-$500 for permit fees and 2-4 weeks for processing time. Your contractor should manage this process, but confirm before signing a contract.