Premium Sauna Wood

Professional Quality Wood for Sauna Walls, Benches & Trim

ProSaunas is a premium supplier of sauna wood for residential and commercial builds, from home saunas to large-scale gym, spa, and hotel installations. Our collection includes Thermo Aspen, Alder, Thermo Alder, Hemlock, Western Red Cedar, Spruce, and Magnolia sauna wood, along with thermally modified wood options designed for durability in high-heat, high-moisture environments.

All materials are suited for sauna walls, benches, trim, ceilings, and full interior builds, giving you flexibility to design a sauna that performs as well as it looks.

Get Started on Your Next Sauna Build

Choosing the right sauna wood is a critical first step, and our team is here to guide you through it. Request samples to compare color, texture, and finish in your space or schedule a consultation to get recommendations based on your layout and use case.

Species
Species
Treatment Type
Treatment Type
Profile
Profile
Application
Application
Alder 1x5 sauna wood plank STS4, tongue and groove
PROSAUNAS Alder 1×5 T&G STS4
Treatment Type:
Untreated
2x2 alder sauna wood board, S4SEE SHP profile
PROSAUNAS Alder 2×2 S4SEE SHP
Treatment Type:
Untreated
Cedar 2x4 TG V2E sauna lumber for interior sauna paneling
PROSAUNAS Cedar 1/2×4 VG T&G V2E
Treatment Type:
Untreated
1x6 Hemlock S4SEE sauna paneling board for walls and ceiling interiors
PROSAUNAS Hemlock 1×6 VG S4SEE
Treatment Type:
Untreated
PROSAUNAS Hemlock Sauna Wood
PROSAUNAS Hemlock 1/2×4 VG T&G V-Joint
Treatment Type:
Untreated
PROSAUNAS Thermo-Aspen 2x2 S4SEE Trim
PROSAUNAS Thermo-Aspen 2×2 S4SEE SHP
Treatment Type:
Thermally Modified
PROSAUNAS Thermo-Aspen Sauna Wood
PROSAUNAS Thermo-Aspen 2×2 S4SEE SHP
Treatment Type:
Thermally Modified
PROSAUNAS Thermo-Aspen 2x2 S4SEE Sauna Trim
PROSAUNAS Thermo-Aspen 2×2 S4SEE SHP
Treatment Type:
Thermally Modified
Aspen 2x2 S4SEE SHP sauna wood for wall and ceiling paneling
PROSAUNAS Aspen 2×2 S4SEE SHP
Treatment Type:
Untreated
Smooth Aspen 2x2 SHP wood with eased edges for sauna benches
PROSAUNAS Aspen 2×2 S4SEE SHP
Treatment Type:
Untreated
Premium Aspen 1x3 TG Groove S sauna paneling lumber
PROSAUNAS Aspen Groove-S 1×3 T&G
Treatment Type:
Untreated
Aspen 1x5 tongue and groove STS4 sauna wood panel
PROSAUNAS Aspen 1×5 T&G STS4
Treatment Type:
Untreated
PROSAUNAS Thermo-Aspen Groove-S 1X3 T&G
Treatment Type:
Thermally Modified
PROSAUNAS Aspen LUXE™ 2×4 T&G
Treatment Type:
Untreated
PROSAUNAS Alder LUXE™ 2×4 T&G
Treatment Type:
Untreated
PROSAUNAS Thermo-Aspen LUXE™ 2×4 T&G
Treatment Type:
Thermally Modified
PROSAUNAS Thermo-Spruce 1X4 T&G STS4
Treatment Type:
Thermally Modified
PROSAUNAS Thermo-Aspen Groove-S 1X4 T&G
Treatment Type:
Thermally Modified
PROSAUNAS Aspen Char™ 1X4 T&G STS4
Treatment Type:
Wax-Coated
PROSAUNAS Thermo-Magnolia 1X6 T&G STS10
Treatment Type:
Thermally Modified
PROSAUNAS Thermo-Spruce 1×4 T&G STP
Treatment Type:
Thermally Modified
PROSAUNAS Thermo-Radiata Pine 1X4 T&G STS4
Treatment Type:
Thermally Modified
PROSAUNAS Thermo-Aspen Grace™ 2×3 T&G
Treatment Type:
Thermally Modified
PROSAUNAS Thermo-Aspen 1×4 T&G STS4
Treatment Type:
Thermally Modified
PROSAUNAS Thermo-Aspen 1×4 T&G STP
Treatment Type:
Thermally Modified
Alder 2x3 tongue and groove GRACE sauna wood plank
PROSAUNAS Alder Grace™ 2×3 T&G
Treatment Type:
Untreated
Alder sauna board 1x4 smooth profile
PROSAUNAS Alder 1×4 T&G STS4
Treatment Type:
Untreated
PROSAUNAS Alder 1×4 T&G STP
Treatment Type:
Untreated
1x4 Tongue & Groove V Joint Sauna Wood
PROSAUNAS Cedar 1×4 STK T&G V-Joint
Treatment Type:
Untreated
PROSAUNAS Spruce 1×4 T&G STS4
Treatment Type:
Untreated

Shop Sauna Wood by Type

Selecting the right sauna wood depends on how you plan to use your sauna, the look you want to achieve, and the level of durability you need. Different wood types vary in heat conductivity, color, aroma, and long-term performance, making some better suited for benches, walls, or full interior builds. Compare wood types below and find the best fit for your sauna design.

Thermo Aspen

A thermally modified hardwood with a smooth, splinter-free surface and a refined golden tone. It stays comfortable against the skin even at high temperatures, making it one of the most premium options for interior sauna surfaces.

Best for: Sleek, high-end saunas where maximum comfort on benches and backrests is the top priority

Alder

A traditional sauna hardwood with a soft honey color that deepens over time. It offers a balanced combination of durability, comfort, and a warm, natural appearance that suits classic sauna builds.

Best for: Traditional home saunas with a warm, natural look

Thermo-Alder

Thermally modified alder with a deeper, richer tone and enhanced durability for demanding environments. It offers a more elevated look while maintaining the smooth feel and reliability of traditional alder.

Best for: Commercial saunas or high-use spaces that need durability with a darker finish

Hemlock

A clean, knot-free wood with a consistent grain and neutral scent. Its uniform appearance makes it a popular choice for modern sauna designs that prioritize simplicity and visual consistency.

Best for: Contemporary saunas with a clean, minimalist aesthetic

Western Red Cedar

A signature sauna wood known for its natural aroma and distinctive color variation. It creates a more sensory sauna experience, combining visual richness with a recognizable scent.

Best for: Spa-style saunas where aroma and ambiance are key

Spruce and Magnolia

Light-toned woods with clean, consistent grain patterns that create a bright, refined sauna interior. Spruce offers a classic Scandinavian look, while Magnolia provides a smoother, more uniform finish for design-focused builds. Both work well across walls and ceilings for a cohesive appearance.

Best for: Light, modern saunas and custom builds with a clean, uniform look

Choosing the Right Wood by Application

The right wood choice depends on how each surface in your sauna is used. Some woods are better suited for comfort, while others are ideal for visual consistency or overhead installation.

  • Walls: Thermo Aspen, Hemlock, or Cedar — ideal for creating a consistent look with reliable performance in high heat
  • Benches: Aspen or Alder — smooth, comfortable surfaces that stay pleasant against bare skin
  • Ceilings: Hemlock, Spruce, or thermally modified wood — lightweight options that perform well overhead

What is Thermo Wood?

Thermally modified sauna wood, often referred to as thermo wood or thermo-treated wood, is engineered for demanding sauna environments where heat, humidity, and long-term use are key considerations.

Through a controlled heat process, moisture is reduced, and the wood structure is strengthened, resulting in enhanced stability and long-term durability. This makes thermo wood a strong choice for high-use residential saunas, commercial installations, or projects where longevity and minimal maintenance are priorities.

Common options include thermo aspen, thermo alder, thermo radiata pine, thermo spruce, and thermo magnolia.

Design & Integration Options

ProSauna woods are designed to work seamlessly with our full ecosystem of products, providing a cohesive and elegant setup from door to ceiling.

 

  • Pair with matching sauna doors for a consistent aesthetic and performance match.
  • Enhance ambiance with sauna lights to highlight natural wood tones and create a calming glow.
  • Combine with Himalayan salt walls for a spa-like, therapeutic design.
  • Complete your build with first-rate sauna accessories, including thermometers, ladles, and benches, all of which are compatible with our wood profiles.

Whether your vision is traditional Finnish or contemporary minimalist, ProSaunas’ wood selection adapts to your style and structure.

Build Your Sauna with the Premium Wood from ProSaunas

Choosing the right sauna wood is a critical decision that impacts comfort, performance, and long-term durability. Seeing and feeling the materials firsthand makes it easier to confidently select the best option for your space.

Request samples to compare wood types, tones, and finishes in your environment, or schedule a consultation to get tailored recommendations based on your layout and usage. If you’re still refining your layout or material choices, it can help to review a few sauna design and installation considerations before finalizing your selection.