What are the best hardwood decking options available in Ottawa?

Hardwood decking brings a richness and natural beauty that composites struggle to replicate, but choosing the right species for Ottawa's climate is essential. Not every tropical or domestic hardwood handles the extremes of minus 30 in January and plus 35 in July with grace. The best options share common traits: high density, natural rot resistance, dimensional stability, and proven performance in freeze-thaw environments.

Ipe is the gold standard for hardwood decking and performs exceptionally well in Ottawa. This Brazilian hardwood has a Janka hardness rating over 3,500, making it extraordinarily resistant to dents, scratches, and wear. Its natural oils repel moisture, insects, and decay without chemical treatment. Ipe handles Ottawa's freeze-thaw cycles better than most woods because its density prevents water absorption that causes cracking and splitting. Left unfinished, it weathers to a silver-grey patina. Maintained with annual UV-protective oil, it retains its deep chocolate-brown colour for decades. The downside is cost—expect to pay three to four times more than pressure-treated lumber—and installation requires pre-drilling and specialized fasteners because the wood is harder than some metals.

Cumaru, sometimes called Brazilian teak, offers similar performance to ipe at a somewhat lower price point. It's slightly less dense but still rates above 3,000 on the Janka scale. Cumaru has beautiful golden-brown tones with occasional reddish streaks and handles Ottawa winters well. It's a solid choice if you want the tropical hardwood look without the top-tier ipe pricing.

Garapa is another South American option gaining popularity in Ottawa. It's lighter in colour—a warm honey-gold—and while less dense than ipe or cumaru, it still significantly outperforms domestic softwoods. Garapa is easier to work with during installation, which can reduce labour costs. It does require more attentive finishing to maintain its colour in Ottawa's UV-intense summers.

For a domestic option, white oak has a long history in outdoor applications. Its closed-grain structure resists moisture penetration naturally, and thermally modified white oak (heated to over 400 degrees Fahrenheit in a controlled process) takes that durability further by reducing the wood's ability to absorb water. Thermally modified oak is increasingly available through Ottawa lumber suppliers and offers a local alternative to imported tropical species.

Western red cedar, while technically a softwood, deserves mention because it's the most commonly used natural wood decking in Ottawa. It won't match hardwoods for longevity or hardness, but its natural resistance to rot and insects, combined with its availability and workability, makes it a practical mid-range choice. Expect to replace cedar decking boards in 15 to 20 years versus 30-plus for tropical hardwoods.

Whichever species you choose, proper installation matters as much as the wood itself. Hardwood decking needs adequate ventilation underneath, proper gapping for seasonal expansion, and stainless steel or coated fasteners to prevent corrosion staining. An Ottawa patio professional can help you weigh the long-term value of each option against your budget and design goals.

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• Luxe Painting and Renovations
• JC Carpentry
• Nic’s D.U.C.T Works Inc
• 613 Interlock
• Prime Property Works