What is the ROI of a pressure-treated wood deck versus composite in New Brunswick?

In New Brunswick, both deck types deliver strong ROI, but they work differently — pressure-treated gives you lower upfront cost with higher ongoing maintenance expense, while composite costs more to build but pays back through zero maintenance and longer lifespan.

The real ROI comparison isn't just about resale value — it's about total cost of ownership over the deck's life in NB's demanding climate.

Upfront Cost vs. Lifetime Cost

A 12x16 pressure-treated deck runs roughly $4,800–$7,700 installed, while the same deck in composite lands at $8,600–$14,400. That's a real gap. But here's what most homeowners miss: a PT deck in New Brunswick needs professional staining or sealing every 2-3 years at $600–$1,200 per treatment. Over 25 years, that's $5,000–$15,000 in maintenance costs on top of the build price. Composite requires essentially zero ongoing maintenance — no staining, no sealing, ever.

PT lumber also takes a beating from NB's 100+ freeze-thaw cycles per year. Water penetrates the wood grain, freezes, expands, and splits boards from within. Expect to replace surface boards and do structural repairs somewhere in the 15-20 year range. A quality composite deck from Trex, TimberTech, or Fiberon carries 25-50 year warranties and handles our Maritime humidity and freeze-thaw cycles without deteriorating.

Resale Value in the NB Market

Canadian real estate data generally puts deck ROI at 70-80% of construction cost at resale, regardless of material. However, composite decks tend to hold their appeal better with buyers because a well-maintained composite deck looks the same at year 15 as it did at year 2. A PT deck that hasn't been stained in four NB winters looks rough — and buyers notice. In the Moncton, Fredericton, and Saint John markets, a tired-looking PT deck can actually reduce perceived home value even if the structure is sound.

Which Makes More Financial Sense?

If you're selling within 5-7 years, pressure-treated is the smarter financial move. Lower build cost, reasonable resale contribution, and you won't be around long enough to feel the maintenance burden. If you're staying 10+ years, composite almost always wins on total cost of ownership — especially in NB where maintenance skipping leads to accelerated deterioration and costly repairs.

One practical tip: if budget is tight but you want composite durability, ask your deck builder about a hybrid approach — PT framing (which is always hidden) with composite decking boards on top. This is actually the industry standard and gets you most of the composite benefits at a lower cost than full composite construction.

Regardless of material, the structural fundamentals matter most for long-term value — proper footings below frost depth (1.2m in southern NB, 1.5m in the north), correct ledger flashing, and quality fasteners. A beautiful composite deck on bad footings is worth nothing.

New Brunswick Decks can match you with local builders who can price out both options side-by-side for your specific project — it's a free service and worth getting real numbers before deciding. Find them through the New Brunswick Construction Network at newbrunswickconstructionnetwork.com.