How much do composite deck boards cost compared to wood in Ottawa?

The composite versus wood decision for Ottawa deck and patio surfaces is fundamentally a question of upfront cost versus long-term maintenance, and Ottawa's extreme climate makes that calculation more interesting than it would be in a milder region. Our temperature swings from minus 30 to plus 35 degrees Celsius, heavy snow loads, and relentless freeze-thaw cycling accelerate the wear on wood while being largely shrugged off by quality composite products.

Composite deck boards in Ottawa currently range from $4.50 to $14.00 per linear foot depending on brand and product tier. Entry-level capped composites like Trex Enhance or Fiberon Good Life run $4.50 to $6.50 per linear foot. Mid-range products like Trex Transcend, TimberTech Azek (PVC), or Fiberon Paramount sit between $7.00 and $10.00 per linear foot. Premium lines like Azek Vintage or Trex Signature push $10.00 to $14.00 per linear foot. For a 200 square foot deck surface, materials alone typically cost $2,500 to $5,500 at the mid-range tier. Most composite manufacturers now offer 25 to 50 year warranties on structural integrity and fade resistance, though the warranty terms vary significantly between brands.

Pressure-treated lumber, which remains the most common wood choice for Ottawa decks, costs $1.50 to $3.00 per linear foot for standard 5/4x6 boards. Western red cedar runs $3.50 to $6.00 per linear foot, and ipe or other tropical hardwoods cost $7.00 to $12.00 per linear foot. For that same 200 square foot deck, pressure-treated materials run roughly $800 to $1,500, cedar costs $1,800 to $3,200, and exotic hardwoods land between $3,500 and $6,000.

Installation costs are roughly comparable, though composite does carry a slight premium. Most Ottawa contractors charge $8 to $14 per square foot for labour on a straightforward deck installation regardless of material, though composite hidden fastener systems add $1 to $2 per square foot in additional labour time. A fully installed 200 square foot composite deck at mid-range product quality typically totals $5,500 to $9,000, while the same size in pressure-treated runs $3,000 to $5,500 and cedar falls between $5,000 and $8,000.

The long-term cost comparison is where Ottawa's climate tilts the equation toward composite for many homeowners. Pressure-treated decks in Ottawa need staining or sealing every 2 to 3 years at $300 to $800 per application to prevent the greying, splitting, and rot that our wet springs and harsh winters accelerate. Cedar needs similar maintenance on the same schedule. Over a 25-year period, maintenance on a wood deck can easily add $3,000 to $8,000 to the total cost of ownership. Composite decks need only periodic cleaning — a spring wash with a deck cleaner and garden hose covers it — at virtually no cost beyond your time.

There are a few Ottawa-specific considerations worth noting. Composite boards can become very hot underfoot during Ottawa's July heat waves, particularly darker colours, which is worth thinking about for south-facing patios. Wood decks feel more natural underfoot in all temperatures. Composite also handles Ottawa's heavy snow loads well without the moisture absorption that causes wood boards to cup and warp after a winter under snowpack. For substructure, nearly all Ottawa contractors use pressure-treated lumber for joists and framing regardless of the surface material, since the substructure is not exposed to UV and pressure-treated handles ground contact and moisture better than any alternative at its price point. An experienced Ottawa patio and deck contractor can walk you through product samples and help match the right material to your specific usage, sun exposure, and budget.

---

Looking for experienced contractors? The Ottawa Construction Network connects Ottawa homeowners with qualified professionals:

• Justyn Rook Contracting
• RenoMotion Inc.
• Demontigny Carpentry
• Stone and fern
• Humble Homes - property maintenance