What is the best timber for sauna interiors?

Abachi (Triplochiton scleroxylon) is the international standard for sauna interiors due to its exceptionally low thermal conductivity, which keeps surfaces comfortable to skin at operating temperatures of 90–110°C. It is knot-free, splinter-free, and dimensionally stable across heat-cool cycles.

Abachi (Triplochiton scleroxylon) is the international standard for sauna interiors due to its exceptionally low thermal conductivity, which keeps surfaces comfortable to skin at operating temperatures of 90–110°C. It is knot-free, splinter-free, and dimensionally stable across heat-cool cycles. Thermo-modified abachi adds enhanced rot resistance and a rich caramel colour.

Why this matters

This question relates to Sauna Interior Design: Timber Species, Profiles & Best Practice, which covers the broader topic in detail. Understanding this specific aspect helps architects, builders, and timber dealers make informed specification decisions.

For full context and additional technical detail, see our comprehensive guide:

→ Sauna Interior Design: Timber Species, Profiles & Best Practice

Related questions

• Why is abachi preferred over cedar for European saunas?
• What is thermo-modified timber and why use it in saunas?
• What profiles are available for sauna cladding?

About this answer

This answer is part of the PuurModulair Knowledge Base — comprehensive timber specification guidance for architects, builders, and dealers across the UK, EU, and Scandinavia. All technical content is reviewed by qualified timber technologists before publication.