When it comes to upgrading the exterior of Ottawa homes, two of the most talked-about siding products are LP SmartSide and James Hardie. Both brands offer premium solutions that enhance curb appeal, protect against Ottawa’s extreme weather, and can significantly boost property value. However, they differ in cost, durability, maintenance, and installation timelines—all critical factors for homeowners planning a siding replacement.
This comprehensive comparison examines both materials in depth, helping Ottawa homeowners make informed decisions when selecting the best siding for their property.
Understanding the Ottawa Climate and Its Impact on Siding
Ottawa experiences harsh winters, humid summers, and unpredictable freeze-thaw cycles. These conditions demand resilient siding materials that can resist warping, cracking, and moisture damage. Any siding choice must perform well against:
- Heavy snowfall and ice dams
- Frequent temperature fluctuations
- Wind-driven rain
- UV exposure and fading
For an overview of the challenges unique to Ottawa’s weather, see Best Siding Options for Cold Climates Like Ottawa, which explores how different materials perform in sub-zero temperatures.
LP SmartSide: Engineered Wood Built for Resilience
What Is LP SmartSide?
LP SmartSide is an engineered wood siding made from wood strands coated in wax, bonded with resins, and treated with zinc borate to resist insects and rot. It’s then finished with a weather-resistant overlay. Its look closely mimics traditional wood, making it a popular choice for homeowners who want classic aesthetics without the high upkeep of cedar.
Cost Overview
LP SmartSide generally costs $9–$15 per sq ft installed in Ottawa. Pricing varies depending on:
- Profile and style (lap siding vs. board-and-batten)
- House size and complexity
- Trim and flashing requirements
- Labour rates during peak season
For a detailed breakdown of siding prices by material and home size, refer to Ottawa Siding Costs 2025.
Durability and Weather Resistance
LP SmartSide is known for:
- Impact resistance: More forgiving to hail or debris than fiber cement.
- Moisture protection: Zinc borate treatment helps prevent rot and fungal decay.
- Freeze-thaw performance: Less prone to cracking compared to fiber cement during rapid temperature drops.
However, LP SmartSide is still a wood-based product, meaning its long-term performance depends on proper installation and regular maintenance of paint and caulking.
Installation Timeline
One of LP SmartSide’s biggest advantages is speed of installation. Its lightweight boards are easier to cut with standard carpentry tools, often reducing installation time by 20–30 % compared to James Hardie. This can make a significant difference during Ottawa’s short warm-weather construction season.
James Hardie: The Fiber Cement Industry Leader
What Is James Hardie Siding?
James Hardie is the most recognized fiber cement siding brand in North America. Made from Portland cement, sand, cellulose fibers, and proprietary additives, it delivers exceptional fire resistance, dimensional stability, and low maintenance requirements. It’s particularly well-suited to homes in cold climates where durability is paramount.
Cost Overview
James Hardie typically costs $11–$18 per sq ft installed in Ottawa. The higher price point reflects:
- More labour-intensive installation
- Specialized cutting tools and dust management
- Premium trims and fasteners required by manufacturer guidelines
For homeowners weighing return on investment, check out James Hardie Siding in Ottawa: Is It Worth the Cost? for a deep dive into long-term ROI considerations.
Durability and Weather Resistance
James Hardie excels in:
- Fire resistance: Non-combustible, meeting building codes for urban and rural fire zones.
- Moisture resistance: Engineered to handle prolonged wet conditions without swelling.
- UV and fade resistance: Factory-applied ColorPlus finish resists peeling and fading, maintaining curb appeal for decades.
Its dense structure makes it highly resistant to warping and cracking, though it can be more brittle if mishandled during installation.
Installation Timeline
James Hardie requires specialized crews trained in fiber cement installation. Cutting boards with diamond blades and using proprietary fasteners adds time to each project. Homeowners should expect a slightly longer installation period, particularly for larger or multi-story homes. Planning early, ideally in spring, ensures timelines align with Ottawa’s peak construction window.
Side-by-Side Comparison Table
| Feature | LP SmartSide | James Hardie |
|---|---|---|
| Material Type | Engineered wood | Fiber cement |
| Cost (installed) | $9 – $15 / sq ft | $11 – $18 / sq ft |
| Weight | Lightweight | Heavier, denser |
| Installation Speed | Faster | Slower (requires specialized tools) |
| Durability in Freeze–Thaw | Very good | Excellent |
| Fire Resistance | Moderate | Excellent (non-combustible) |
| Maintenance | Repainting & caulking needed | Low maintenance ColorPlus finish |
| Warranty | 50 years (limited) | 30–50 years (varies by product) |
| Aesthetics | Wood-like | Crisp, uniform |
Cost vs. Longevity: Which Delivers Better ROI in Ottawa?
Ottawa homeowners often evaluate siding through the lens of upfront cost vs. lifetime value. LP SmartSide has a lower initial cost and faster installation, making it attractive for budget-conscious projects or flips. However, James Hardie’s superior fire resistance, minimal maintenance, and longer lifespan can deliver better long-term ROI—especially for homeowners planning to stay in their property for decades.
For detailed ROI insights on siding replacement, the Government of Canada’s Energy Efficiency Program provides useful data on exterior upgrades and their impact on property value.
Aesthetic Considerations: Matching Ottawa’s Architectural Styles
Both LP SmartSide and James Hardie offer a range of styles suited to Ottawa’s mix of historic homes, modern infill projects, and suburban developments:
- LP SmartSide: Favoured for craftsman, traditional, and farmhouse styles due to its wood texture.
- James Hardie: Popular in contemporary, colonial, and urban builds for its clean lines and low-gloss finish.
Homeowners can explore board-and-batten, lap siding, and panel combinations to achieve unique façades. See The Ultimate Guide to Choosing the Best Siding for Your Home for style inspiration tailored to Ottawa neighbourhoods.
Maintenance Requirements Over Time
LP SmartSide Maintenance
- Requires regular repainting every 7–10 years to maintain weather protection.
- Caulking joints must be checked annually to prevent water infiltration.
- Vulnerable to moisture damage if neglected.
James Hardie Maintenance
- ColorPlus finish can last 15+ years without repainting.
- Only periodic cleaning with a soft brush and mild detergent is needed.
- Excellent resistance to pests and rot, minimizing long-term upkeep.
For guidance on protecting your investment, visit How to Maintain Your Siding for Longevity.
Installation Timelines in Ottawa’s Construction Season
Ottawa contractors face a limited warm-weather window, typically from late April to early November, for full siding replacements. LP SmartSide’s faster installation can help projects fit into tighter schedules, while James Hardie installations should be planned early to secure experienced crews.
For detailed expectations on project scheduling, see What to Expect During a Siding Installation.
Environmental Considerations
- LP SmartSide: Uses renewable wood resources and low-VOC resins, making it attractive to eco-conscious homeowners.
- James Hardie: Has a longer service life and excellent fire resistance, contributing to reduced replacement cycles.
For homeowners pursuing energy efficiency incentives, the Canada Greener Homes Initiative outlines available grants and rebates for exterior retrofits, including siding upgrades.
When to Choose LP SmartSide vs. James Hardie
Choose LP SmartSide if you:
- Want a lower initial investment
- Prefer a traditional wood-grain look
- Need faster installation
- Are comfortable with periodic repainting and maintenance
Choose James Hardie if you:
- Plan to stay long term and want maximum durability
- Prioritize fire resistance and minimal maintenance
- Value a refined, modern aesthetic
- Want superior protection against Ottawa’s wet winters and freeze-thaw cycles
Conclusion: Invest Strategically for Ottawa’s Climate
Both LP SmartSide and James Hardie are top-tier siding products, each offering distinct benefits. In Ottawa’s demanding climate, James Hardie often edges out LP SmartSide in long-term performance, though LP SmartSide can be a smart, cost-effective option for projects on a tighter timeline or budget.
Before making a decision, consult experienced local installers who understand Ottawa’s weather patterns, building codes, and energy efficiency standards. For professional guidance and project quotes, contact Kaloozie Comfort—Ottawa’s trusted exterior specialists.
