Hemlock vs Cedar vs Basswood Sauna: Which Wood Is Best?

Hemlock vs Cedar vs Basswood Sauna: Which Wood Is Best?

The wood your sauna is built from affects everything - how it looks, how it smells, how it feels when you touch it at 190F, how long it lasts, and what you'll pay. Hemlock, cedar, and basswood are the three most common species used in residential saunas, and each has legitimate strengths. Here's what actually matters.

Quick Overview

Canadian Hemlock: The All-Rounder

Hemlock is the most widely used sauna wood globally, and there's a reason for that. It checks every box without being the best or worst at anything.

• Appearance: Clean, blonde, uniform grain. Gives saunas a modern Scandinavian look that photographs well and appeals to a wide range of tastes.
• Scent: Almost none, which is actually a feature. Some people are sensitive to cedar's strong aroma, especially in a hot enclosed space. Hemlock lets you enjoy the pure sauna experience (or add your own essential oils to the steam without competing scents).
• Durability: Good on its own, excellent when heat-treated. Heat-treated (thermally modified) hemlock resists moisture and decay significantly better than raw hemlock. Most quality outdoor saunas use heat-treated hemlock for the exterior.
• Comfort: Medium density means it absorbs heat but doesn't get painfully hot to sit on. A nice middle ground.
• Hypoallergenic: No natural resins or strong chemical compounds. Very unlikely to cause allergic reactions.

Western Red Cedar: The Premium Choice

Cedar is the wood most people picture when they think of a sauna. It's beautiful, it smells incredible, and it commands a premium price.

• Appearance: Rich reddish-brown tones with dramatic grain variation. No two cedar saunas look the same. It ages to a distinguished silver-gray outdoors.
• Scent: The signature cedar aroma is strong, warm, and woody. Many people consider this a major part of the sauna experience. However, it can be overpowering for some, especially at high temperatures, and the scent does diminish over the first year or two of use.
• Natural rot resistance: Cedar produces thujaplicin, a natural antifungal compound. This makes it inherently resistant to rot, decay, and insect damage - even without heat treatment. It's the best choice for wet environments and outdoor exposure.
• Weight: Cedar is lighter than hemlock, making it easier to work with during assembly.
• Cost: Cedar saunas typically cost 15-30% more than comparable hemlock models. The price premium reflects the wood's natural durability and aesthetic appeal.

A Note on Cedar Allergies

A small percentage of people are sensitive to the natural oils in western red cedar. In the confined, heated environment of a sauna, this sensitivity can manifest as respiratory irritation, skin rash, or headaches. If you've never spent extended time in a cedar sauna, test your reaction before committing to a full build.

Basswood: The Budget-Friendly Option

Basswood (also called American linden) is the most affordable sauna wood and has some genuine advantages, along with some real limitations.

• Hypoallergenic: The most allergy-friendly option. Zero scent, zero resins, zero natural oils. Ideal for people with chemical sensitivities or allergies to cedar.
• Cool to the touch: Basswood has the lowest density of the three, which means it absorbs less heat. The benches feel cooler on your skin at the same air temperature - a genuine advantage at 190F.
• Price: Basswood saunas are typically the least expensive option, making them attractive for budget-conscious buyers.
• Appearance: Very pale, almost white. Clean and uniform but can look somewhat bland compared to cedar's richness or hemlock's warmth.

The Downside

Basswood is soft and has poor natural rot resistance. It dents more easily, stains from water contact, and is not suitable for outdoor use without serious weatherproofing. It's best for indoor saunas only. Even indoors, it will show wear sooner than hemlock or cedar.

Which Wood Should You Choose?

Choose hemlock if:

• You want a versatile wood that works for indoor and outdoor saunas
• You prefer a clean, neutral appearance
• You don't want competing scents in your sauna
• You want excellent durability at a mid-range price (especially heat-treated)

Choose cedar if:

• You want the best natural rot resistance for outdoor installations
• You love the cedar aroma and classic sauna aesthetic
• You're willing to pay a premium for beauty and durability
• You don't have cedar sensitivity

Choose basswood if:

• You have allergies or chemical sensitivities
• Budget is the primary concern
• Your sauna is going indoors (not suitable for outdoor use)
• You prefer the coolest-feeling benches at high temperatures

What We Build With

Most SweatDecks saunas use heat-treated Canadian hemlock for its combination of durability, appearance, and versatility. We also carry cedar options for customers who prefer the premium look and natural rot resistance. Browse our outdoor sauna collection and barrel saunas to see what's available. Free shipping on orders over $5,000, HSA/FSA eligible through TrueMed.