Thermory sauna wood is purpose-built for high-heat, high-humidity sauna environments, offering unmatched stability, durability, and refined aesthetics. All Thermory sauna woods are produced in Estonia using an advanced thermal modification process that permanently enhances the wood’s performance without the use of chemicals.

This collection includes Thermory’s full range of thermally modified Aspen and Alder sauna materials, including Thermo Aspen, Thermo Alder, and Dark Thermo Alder. Each species is carefully selected for sauna use due to its low heat conductivity, smooth surface feel, and resistance to moisture-related movement.

The Thermory sauna wood lineup covers every critical interior application, including:

• Sauna wall and ceiling cladding

• Bench boards and bench support material

• Trim, moldings, and finishing profiles

• Structural and decorative sauna components

Thermal modification removes resins and excess moisture while improving dimensional stability, allowing these woods to withstand repeated heating and cooling cycles without warping, cracking, or cupping. This makes Thermory wood ideal for custom sauna builds, renovations, and commercial installations where long-term performance is essential.

Thermo Aspen offers a light, clean, modern appearance with minimal knots and a soft touch, while Thermo Alder provides a warmer tone and richer grain. Dark Thermo Alder delivers a deeper, more dramatic color for premium sauna interiors and contrast-driven designs. All profiles are available in multiple board sizes and pack configurations to support a wide range of sauna layouts and bench designs.

All Thermory sauna wood products are chemically untreated, sustainably sourced, and safe for high-temperature use, ensuring a clean indoor environment and long service life. Whether you are building a ground-up sauna or sourcing professional-grade materials for a luxury project, Thermory sauna wood delivers consistent quality across every profile and species.