Is engineered wood siding a good choice for New Brunswick homes?

Engineered wood siding — primarily LP SmartSide and similar products — is a solid choice for New Brunswick homes when properly installed, sitting between vinyl and fibre cement in cost, performance, and maintenance requirements. Installed costs run $8 to $14 per square foot in NB, making it a meaningful step up from vinyl without reaching fibre cement pricing, and it offers genuinely good performance in NB's demanding climate when the installation is done right.

LP SmartSide is the dominant engineered wood product in NB and across Canada. It's constructed from wood strands bonded with exterior-grade adhesives and overlaid with a factory-applied primed and textured surface. The engineering matters: the strand-based construction is more dimensionally stable than solid wood or cedar, resisting the warping, cupping, and checking that make untreated natural wood a poor performer in NB's humidity swings and freeze-thaw cycles. LP SmartSide also uses borate-based treatment throughout the panel to resist fungal decay and insects, which is relevant in NB's wet spring and summer conditions where untreated wood products are vulnerable to moisture-driven decay.

From a practical standpoint, engineered wood looks more like natural wood than vinyl or Hardie — the texture and profile options more closely replicate wood lap siding, wood shakes, and board-and-batten than most fibre cement products, particularly from a distance. For NB homeowners who love the look of wood siding but want better durability and less maintenance than real cedar, LP SmartSide hits a genuine sweet spot.

Performance in NB Conditions

Engineered wood is more moisture-sensitive than fibre cement and requires more attention to installation details, particularly in NB's climate. The most important rule: all cut ends must be field-primed with end-cut primer before installation. Every time LP SmartSide is cut — at corners, around windows, to length — the factory coating is interrupted, and those exposed end-grain sections are the most vulnerable points in the assembly. NB contractors with engineered wood experience know this well; contractors who don't prioritise it create moisture entry points that can cause swelling, delamination, and paint failure starting at those edges.

Joints, trim intersections, and penetrations must be properly caulked with quality exterior caulk and maintained on a regular cycle. In NB's coastal zones and in areas with significant wind-driven rain, this maintenance cycle needs to be taken seriously — budgeting for a caulking inspection and touch-up every 5 to 8 years is part of the honest cost picture for engineered wood siding.

Painting or repainting is required more frequently with engineered wood than with vinyl (which is colour-through) or factory-finished fibre cement. LP SmartSide typically needs repainting every 8 to 12 years in moderate NB conditions, or 6 to 10 years on south and west-facing walls with significant sun and weather exposure. That's a better maintenance interval than natural cedar but a real ongoing cost compared to premium vinyl or ColorPlus Hardie, which can go 15 to 20 years without repainting.

For energy performance, engineered wood is roughly equivalent to fibre cement as a cladding layer — neither provides significant R-value on its own, and both benefit from the addition of continuous rigid foam insulation under the siding during installation. If you're replacing siding on an older NB home with 2x4 walls, this is an excellent opportunity to add 1 to 2 inches of XPS foam board to meaningfully improve your wall's thermal performance regardless of which cladding product you choose.

Engineered wood is a legitimate, good-performing choice for NB homes — it is NOT the problematic hardboard siding products (Masonite, Louisiana-Pacific's older hardboard) that failed widely in the 1980s and 1990s due to moisture issues. Those products are entirely different from modern LP SmartSide. If you're evaluating engineered wood, confirm specifically that you're looking at current LP SmartSide or equivalent strand-based products, not older hardboard or particleboard-based siding. For more detailed painting and finishing guidance for engineered wood siding, New Brunswick Painting at newbrunswickpainting.com covers exterior painting in depth.

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

• Thirty Four Renovations
• Gionetterenovations