Cedar Wood for Saunas: Why Red Cedar Reigns Supreme

If you’re in the market for building or upgrading a sauna, you’ve likely heard that cedar is the go-to material. At AdvantageLumber.com, we frequently hear from customers eager to source high-quality Red Cedar wood specifically for their sauna projects.

And for good reason—Western Red Cedar (Thuja plicata) stands out as the premier choice for sauna construction. In this post, we’ll look at why Red Cedar is so highly regarded, highlight some pitfalls to avoid with alternative cedars, and break down the grades we offer to help you make an informed decision.

Why Choose Western Red Cedar for Your Sauna?

Western Red Cedar has earned its reputation as the ultimate sauna wood through a combination of natural properties that make it perfectly suited to the harsh environment of heat, steam, and humidity. Here’s what sets it apart:

  • Exceptional Durability and Resistance to Decay: Saunas expose wood to extreme moisture and temperature fluctuations, which can lead to rot, warping, or insect damage in lesser materials. Red Cedar’s natural oils, including thujaplicin, provide built-in resistance to decay, fungi, insects, and moisture. This makes it incredibly long-lasting—some sources estimate it can endure 40 to 50 years in a sauna setting.
  • Aromatic and Therapeutic Benefits: One of the most beloved features of Red Cedar is its distinctive, spicy aroma that enhances the relaxing sauna experience. Unlike other woods, it releases a pleasant scent when heated, contributing to aromatherapy-like benefits without any added chemicals.
  • Thermal Performance and Comfort: As a low-density softwood, Red Cedar is an excellent insulator. It heats up quickly but doesn’t retain heat like denser materials, meaning benches and walls stay comfortably cool to the touch even in high temperatures. Its low thermal conductivity outperforms alternatives like concrete or steel, ensuring a safer, more enjoyable session.
  • Stability in Extreme Conditions: Red Cedar resists warping and cracking under the stress of repeated heating and cooling cycles, thanks to its natural stability. This is crucial for maintaining the structural integrity and aesthetic appeal of your sauna over time.
  • Aesthetic Appeal: With its rich reddish-brown hues and fine grain, Red Cedar adds a luxurious, natural beauty to any sauna design.

These qualities make Western Red Cedar not just functional but a smart investment for anyone serious about their sauna build.

A Word of Caution: Not All Cedars Are Created Equal—Avoid White Cedar

While cedar in general is popular for saunas, it’s important to distinguish between types. Some sauna companies cut costs by using Northern White Cedar (Thuja occidentalis), but this can lead to disappointing results. White Cedar is less durable than its red counterpart, with lower resistance to decay and moisture due to fewer natural oils. It’s more prone to rotting in wet environments and lacks the strength and knot resistance of Red Cedar, potentially shortening the lifespan of your sauna.

Although White Cedar is cheaper and offers decent value in some regions, it doesn’t hold up as well in the demanding conditions of a sauna. If longevity and performance are priorities, stick with Western Red Cedar to avoid future headaches and replacements.

Exploring the Grades of Western Red Cedar

Not all Red Cedar is the same—grades vary based on appearance, grain, and quality, affecting both price and suitability for your project. At AdvantageLumber.com, we stock two of the most popular grades tailored for sauna enthusiasts:

  • Appearance Grade Red Cedar: This grade includes some knots, giving it a charming rustic look that’s perfect for those seeking a more natural, cabin-like vibe in their sauna. It’s a cost-effective option without sacrificing the core benefits of Red Cedar, such as durability and aroma. Ideal for budget-conscious builders who appreciate character in their wood.
  • Clear Vertical Grain (CVG) Red Cedar: For a premium, flawless finish, CVG is the top-tier choice. Completely knot-free with a straight vertical grain, it offers superior stability against the expansion and contraction caused by sauna heat and humidity. This makes it especially reliable for high-use saunas, ensuring minimal warping over time. While it’s a higher-end product, the clean aesthetics and enhanced performance justify the investment.

Choosing the right grade depends on your style preferences and budget, but both deliver the unmatched qualities of Red Cedar.

Sauna made with CVG Cedar so no knots are visible
Cedar Sauna Construction
Cedar Sauna Construction Using Appearance Grade Cedar

Ready to Build Your Dream Sauna?

Whether you’re DIY-ing a home sauna or working with a professional, sourcing the right wood is key to a satisfying result. At AdvantageLumber.com, we’re proud to offer top-quality Western Red Cedar in appearance and CVG grades, shipped directly to you. Our customers rave about the difference it makes in their sauna experiences. Browse our selection today and elevate your relaxation game—because when it comes to saunas, Red Cedar truly is the gold standard.

Have questions or need advice on your project? Contact our team at AdvantageLumber.com—we’re here to help!

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