Advantages of Natural Cedar Siding in Canadian Climates

1. Natural Durability & Weather Resistance

Cedar’s natural oils and acids give it exceptional resistance to moisture, rot, and insects. Western Red Cedar is considered one of North America’s most durable woods, able to sit outdoors unpainted and still resist decay. Its low density and shrinkage also make cedar very dimensionally stable, so it swells and warps far less than most other woods under wet/dry and freeze–thaw cycling. In practice, this means cedar cladding can weather Canada’s heavy snow, ice, and rain better than many alternatives. Homeowner guides note that cedar siding stays “less prone to swelling and warping” and even weathers to a durable silvery patina without treatment.

2. Excellent Thermal Insulation

Cedar is a good insulator thanks to its low density and cellular structure. Among common softwoods, Western Red Cedar has one of the lowest thermal conductivities – roughly k = 0.74 Btu·in/ft²·h·°F (R≈1.35 per inch). In practical terms, cedar siding provides more insulating value (R-value) than brick, concrete, or steel cladding, helping to moderate indoor temperatures. Designers note that wood cladding like cedar “insulates better than steel and concrete,” reducing energy use for heating and cooling. The air pockets in cedar’s grain also help dampen sound, so cedar-clad walls can improve thermal and acoustic comfort in Canadian homes.

3. Outstanding Workability and Installation Ease

Cedar is remarkably lightweight and easy to work with, which speeds up construction. It saws, planes, nails, and sands very cleanly with ordinary tools. Builders of cedar siding note that “Red Cedar cuts and installs easily,” and because it lacks heavy resins, it accepts paints or stains readily. It’s fine, straight grain means that even long boards can be run through saws or moulders without tear-out. This workability makes cedar less fatiguing to handle on site and allows carpenters to install siding rapidly (for example, nailing to wood furring strips in a rainscreen assembly). In short, Canadian builders value cedar for its ease of cutting and fastening without special fasteners or techniques.

4. Long Service Life and Low Lifecycle Cost

With proper detailing and finish maintenance, natural cedar siding can last for decades – often 50 years or more. Historic cedar structures (e.g., Norwegian stave churches) still stand after centuries, and modern studies note that cedar shingles or cladding can endure 30–50 years when regularly recoated. RealCedar notes that “properly finished and maintained, cedar will deliver decades of trouble-free service”. In the Canadian context, cedar siding in a rainscreen assembly (with good flashing and ventilation) has proven very durable even in harsh coastal climates. This longevity translates to lower life-cycle costs: fewer replacements and repairs over time compared to short-lived materials.

5. Renewable and Eco-Friendly Profile

Cedar is a sustainably harvested renewable resource. Responsible forest management in Canada means more cedar trees are planted than cut – e.g., “for every Western Red Cedar that’s harvested, at least 3 are planted”. Cedar wood has very low embodied energy compared to synthetic sidings, and it actively sequesters carbon as it grows. Its natural resistance also eliminates the need for toxic preservatives or borate treatments, making it safer for builders and the environment. At the end of life, cedar is fully biodegradable and can be reclaimed or recycled. Building analysts highlight that choosing wood like cedar (versus vinyl or fibre-cement) reduces greenhouse gas emissions and pollution in both production and disposal. Thus, cedar siding aligns well with green building goals and LEED criteria common in Canadian construction.

6. Aesthetic Appeal and Design Flexibility

Cedar offers a warm, natural look that many homeowners prize. Its rich red-brown tones and straight grain create an elegant, classic appearance, and over time, unfinished cedar weathers to a soft silvery-gray patina that is widely admired. Different cuts (bevel boards, shingles, shakes, or channel siding) provide design versatility. Cedar also takes stain and paint exceptionally well, so it can be finished in almost any color or shade. Architects note the “dimensional stability and aesthetic appeal” of Western Red Cedar, and builders remark that it gives “the natural wood appearance of real cedar” that synthetic panels can’t replicate. In short, cedar siding adds distinctive beauty and character to Canadian homes, fitting everything from heritage styles to modern designs.

7. Ideal for Rainscreen Assemblies (Moisture Management)

Canadian practice now favors ventilated rainscreen walls to handle moisture, and cedar is an excellent cladding choice in this system. In a rainscreen, cedar boards are nailed to vertical furring strips over a breathable sheathing, creating a continuous air gap for drainage and drying. Industry guides (e.g., Western Red Cedar Lumber Association) recommend rainscreen construction when installing cedar. In real projects (such as Vancouver apartment buildings), cedar bevel siding has been paired with 10–19 mm air cavities behind it. This configuration lets any water that penetrates the siding run off, while cedar’s own dimensional stability and decay-resistance ensure it won’t rapidly degrade even with occasional wetting. Experts emphasize that even in coastal BC (where rainscreens are mandated by code), cedar performs well, and in drier regions, a rainscreen still helps cedar dry out quickly. In summary, natural cedar siding integrates seamlessly into modern Canadian rainscreen wall assemblies, enhancing moisture control and durability.

8. Compliance with Canadian Codes and Standards

Natural cedar siding is fully accepted under the National Building Code of Canada. Wood cladding standards allow unfilled or untreated cedar boards as exterior cladding. The NBC (adopted provincially) explicitly recognizes cedar as a suitable siding material, provided code requirements are met. In fact, the current code (NBC 9.27) specifies that wood claddings must be installed over a minimum 10 mm ventilated air space, which aligns exactly with how cedar rainscreens are built. There is no code requirement to chemically treat Western Red or Eastern White Cedar for rot or fire when used as cladding. In high-precipitation areas (e.g., Vancouver Island or coastal BC), rainscreen detailing is now mandatory, and cedar is listed in CMHC and HPO guides for wood-envelope best practices. In short, natural cedar siding meets Canadian code provisions for cladding thickness and ventilation and is approved without special preservatives, making it fully compatible with Canadian building regulations.

If you want the cedar siding to be properly installed on your house to provide years of low maintenance, please contact Legion Exteriors for detailed information.

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