Cedar is a premium sauna wood prized for natural moisture resistance, dimensional stability, a distinctive aroma and staying cool to the touch, at a higher cost. Spruce is an economical, widely used softwood — a traditional Nordic sauna wood — offering a pale, light look and good value when properly dried and finished, though it's less naturally moisture-resistant than cedar and can be more resinous. For an outdoor cold-climate sauna, cedar is the premium choice for benches and lining where budget allows, while good sauna-grade spruce is a sound, cost-effective and traditional option. Both work in a well-built, moisture-managed sauna; the choice comes down to cedar's premium qualities against spruce's economy and classic Nordic character.
For sauna interiors, the choice of wood often comes down to premium versus economical — and few pairings capture that better than cedar and spruce. Cedar is the aromatic, moisture-resistant premium wood; spruce is the pale, economical, classically Nordic one. Both make fine saunas. This guide compares cedar and spruce so you can spend your budget where it counts.
Cedar: the premium wood
Cedar is prized for sauna use because it’s:
- Naturally moisture-resistant and decay-resistant.
- Dimensionally stable — resists warping.
- Aromatic — a distinctive scent.
- Cool to the touch — valued for benches.
The trade-off is cost — cedar is premium. See cedar vs pine and cedar vs hemlock for cedar against other woods.
Spruce: economical and traditional
Spruce is a traditional Nordic sauna wood — widely used, economical, and sound when it’s suitable sauna-grade wood, properly dried and finished:
- Pale, light appearance.
- Good value.
- Classic in Nordic saunas.
The cautions: it’s less naturally moisture-resistant than cedar and can be more resinous, so quality, proper drying and good moisture management matter.
Side by side
| Quality | Cedar | Spruce |
|---|---|---|
| Moisture resistance | High (natural) | Good if well dried/finished |
| Stability | High | Good; some resin risk |
| Cool to touch | Yes — noted | Works; less noted |
| Aroma / look | Aromatic, premium | Pale, classic Nordic |
| Cost | Premium | Economical |
Does spruce hold up?
Good sauna-grade spruce, properly dried and finished, holds up well as lining and structure — which is why it’s a traditional sauna wood. With quality, proper drying, and good moisture management (insulation, vapour barrier, ventilation, drying after use), spruce performs well. See wood care.
The budget-smart approach
A common strategy:
- Cost-effective spruce for much of the lining.
- Cedar for benches and surfaces you touch.
This balances budget against cedar’s premium qualities where they matter most — comfort and contact. See best wood for a sauna.
Common mistakes
- Resinous or unsuitable spruce that weeps in the heat.
- Poorly dried wood that warps.
- Ordinary varnish — use bare or sauna-safe finishes only.
- Spending on cedar everywhere when spruce lining plus cedar benches suffices.
- Ignoring moisture management regardless of wood.
Next steps
Choose cedar where its premium moisture resistance and cool-to-touch comfort count — especially benches — and good sauna-grade spruce for economical, classically Nordic lining. Ensure the wood is suitable and well dried, the build manages moisture, and finishes are sauna-appropriate. See best wood for a sauna to weigh every option.
Frequently asked questions
Is cedar or spruce better for a sauna?
Cedar is the premium choice — naturally moisture-resistant, dimensionally stable, aromatic and cool to the touch — at a higher cost. Spruce is an economical, widely used, traditional Nordic sauna wood offering a pale look and good value when properly dried and finished, though less naturally moisture-resistant than cedar and sometimes more resinous. Neither is simply better: cedar excels where budget allows, especially for benches, while good sauna-grade spruce is a sound, cost-effective, classic option. Both work in a well-built, moisture-managed sauna. Choose on cedar's premium qualities versus spruce's economy. See our best wood for a sauna guide.
Is spruce good for a sauna?
Yes — spruce is a traditional, widely used Nordic sauna wood that performs well as lining and structure when it's suitable sauna-grade wood, properly dried and finished. It offers a pale, light appearance and good value. The main considerations are that it's less naturally moisture-resistant than cedar and can be more resinous, so choosing good-quality, appropriately dried spruce and managing moisture in the build matters. Many classic and modern saunas are built with spruce, so it's a sound, economical choice, especially where cedar's premium cost isn't wanted. See our best wood for a sauna guide.
Why choose cedar over spruce for a sauna?
Cedar offers premium qualities spruce doesn't match as fully: greater natural moisture resistance and decay resistance, dimensional stability that resists warping, a distinctive pleasant aroma, and staying notably cool to the touch, which is valued for benches. These make cedar excellent in a sauna's demanding environment, especially for surfaces you contact directly. The trade-off is cost — cedar is premium, spruce economical. So you'd choose cedar for its performance and character where budget allows, particularly for benches, while spruce serves well and cheaply elsewhere. See our cedar vs pine comparison for another cedar match-up.
Is spruce cheaper than cedar for a sauna?
Generally yes — spruce is an economical, widely available softwood, while cedar is a premium wood at a higher price. This cost difference is a major reason people choose spruce, especially for larger areas of lining. A common approach is to use cost-effective spruce for much of the build and reserve cedar for benches and surfaces you touch directly, balancing budget against cedar's premium qualities where they matter most. So spruce wins on cost, and mixing the two lets you spend on cedar where it counts. See our best wood for a sauna guide.
Does spruce hold up in a sauna's heat and moisture?
Good sauna-grade spruce, properly dried and finished, holds up well as sauna lining and structure, which is why it's a traditional Nordic sauna wood. The cautions are that it's less naturally moisture-resistant than cedar and can be more resinous, so quality, proper drying, and good moisture management in the build — insulation, vapour barrier, ventilation and drying after use — matter for it to last. With those in place, spruce performs well in a sauna. So it holds up when it's suitable wood in a well-built, moisture-managed sauna. See our vapour barrier and wood care guides.
Should I use cedar or spruce for sauna benches?
Cedar is a classic premium choice for benches because it stays cool to the touch, resists moisture and doesn't splinter, which matters most on surfaces you sit on directly. Spruce can be used for benches too, but cedar's cool-to-touch quality and moisture resistance make it especially suited to them. A common budget-smart approach is spruce for much of the lining and cedar for the benches. Whatever the wood, benches should be smooth, splinter-free and kept bare or treated only with sauna-appropriate products. See our sauna benches guide.
