The best wood for an infrared sauna is the one that stays stable in the heat, gives off little or no aroma, and does not irritate your skin or airways over years of regular sessions. For most home buyers that points to Canadian hemlock or basswood, with western red cedar as the premium, aromatic option and poplar as the budget choice. The wood matters more than people expect: it shapes how the cabin smells, how it ages, whether it suits sensitive skin, and how much you pay. This guide compares the four woods you will actually be offered, and helps you match one to your home and your budget.
Why the wood matters in an infrared sauna
An infrared sauna runs cooler than a traditional one, typically 45C to 60C rather than 80C or more, because the infrared heaters warm your body directly rather than heating the air. That lower temperature is gentler on timber, but the wood still goes through a daily cycle of warming and cooling that lesser materials cannot handle without warping, cracking or releasing resin. The wood also sits inches from your bare skin and fills a small, enclosed space, so its scent and how it reacts to heat are things you live with every session. A stable, low-odour, non-resinous timber is the goal.
Canadian hemlock: the all-round favourite
Canadian hemlock is the most common wood in home infrared saunas, and for good reason. It is dimensionally stable, so it resists shrinking and warping through the heat cycle, it is strong for its weight, and it is close to odourless, which suits anyone who finds a strong wood scent overpowering in a small cabin. It also carries a lighter price than cedar. The trade-off is that hemlock is not naturally rot resistant and should stay indoors, which is no issue for a home wellness room. If you want a clean, neutral, reliable cabin without paying a premium, hemlock is the default answer.
Basswood: best for sensitive skin and allergies
Basswood is the wood to choose if you or anyone using the sauna has sensitive skin, allergies or a reaction to strong scents. It is hypoallergenic and effectively odourless, with a pale, even, knot-free grain that looks clean and modern. It is also comfortable to sit against because it does not transfer heat as harshly as some denser timbers. The main watch-out is durability: basswood is less naturally resistant to moisture and wear than hemlock, so it relies on a well-built, properly finished cabin to last. For an allergy-prone household, that trade is usually worth making.
Western red cedar: the premium, aromatic choice
Cedar is the wood people picture when they imagine a sauna. Western red cedar is beautiful, with a warm reddish tone and a natural aroma many find relaxing, and it is naturally resistant to moisture and decay. It is the premium option and it looks it. There are two reasons it is not automatically the best pick. First, that signature scent comes from natural oils that can irritate sensitive skin or airways in a small, warm cabin, so it does not suit everyone. Second, western red cedar has become harder to source sustainably, which pushes the price up and availability down. If you love the aroma and the look and have no sensitivity to it, cedar is a genuine pleasure. If anyone using the sauna is sensitive, choose hemlock or basswood instead.
Poplar: the budget option
Poplar turns up in entry-level infrared saunas. It is inexpensive, very pale and neutral in scent, which makes it hypoallergenic-friendly on paper. The catch is longevity and heat behaviour: poplar is softer and less durable than hemlock over years of use, and its surface can run hotter to the touch than softwoods like cedar and hemlock, which some people find less comfortable on bare skin. As a way into infrared at a low price it is fine, but if you plan to use the sauna several times a week for years, hemlock or basswood will usually reward the extra outlay.
Softwood or hardwood: does it matter?
You will sometimes see saunas sorted into softwood and hardwood, and it helps to know which is which. Hemlock and cedar are softwoods, from evergreen conifers, while basswood and poplar are hardwoods, from broadleaf trees. In a sauna the label matters less than the specific properties of each timber, but there are patterns worth knowing. Softwoods like hemlock and cedar tend to feel cooler to the touch and are the traditional sauna choice. Hardwoods like basswood are prized for smooth, splinter-resistant, knot-free surfaces and for being gentle on sensitive skin. Poplar, despite being a hardwood, is soft and light and can run warmer at the surface than either hemlock or cedar.
The practical takeaway is not to shop by category. A good basswood cabin and a good hemlock cabin are both excellent for different reasons, and a cheap poplar cabin is a cheap poplar cabin whichever label it wears. Judge the actual wood, its scent, its stability and how it feels against skin, rather than the softwood or hardwood tag on the listing.
How to choose the right sauna wood for you
Match the wood to the people using it rather than to a spec sheet. If sensitive skin, allergies or scent sensitivity are in the picture, basswood is the safest choice and hemlock a close second. If you want a neutral, dependable cabin at a fair price, hemlock is hard to beat. If the aroma and the rich look are the whole point and no one reacts to cedar oils, western red cedar is the treat. If budget is the deciding factor and the sauna will see lighter use, poplar gets you started. Whatever the timber, build quality, low-EMF heaters and a proper finish matter just as much, so weigh the wood as one part of the decision. For more on specifying a home cabin, see our wider guides at The Shape House.
Frequently asked questions
What is the best wood for an infrared sauna overall?
For most home buyers, Canadian hemlock is the best all-round choice: stable in the heat, close to odourless and fairly priced. Basswood is the better pick if allergies or sensitive skin are a concern, and western red cedar is the premium aromatic option for those who love the scent and do not react to it.
Is cedar or hemlock better for an infrared sauna?
Cedar looks and smells beautiful and resists moisture naturally, but its oils can irritate sensitive users and it costs more. Hemlock is neutral, stable and cheaper. Choose cedar for the aroma and appearance, hemlock for a clean, reliable cabin and a lower price.
Which sauna wood is best for allergies?
Basswood. It is hypoallergenic and effectively odourless, with a smooth, knot-free grain, which makes it the standard recommendation for anyone with sensitive skin, allergies or a reaction to strong wood scents.
Does the wood affect how an infrared sauna feels?
Yes. The wood sets the cabin’s scent, how the surfaces feel against bare skin, and how the space ages. Denser or budget woods such as poplar can run hotter to the touch, while basswood and hemlock tend to feel gentler during longer sessions.
Why is cedar more expensive than hemlock or basswood?
Western red cedar is naturally durable and prized for its colour and aroma, but it is slower to grow and harder to source sustainably, which has pushed up its price and reduced availability. Hemlock and basswood are more plentiful and therefore cheaper.