Prosaunas Thermo-Spruce 1x4 Sauna Wood
Prosaunas Thermo-Spruce 1x4 Sauna Wood
Prosaunas Thermo-Spruce 1x4 Sauna Wood
Prosaunas Thermo-Spruce 1x4 Sauna Wood
Prosaunas Thermo-Spruce 1x4 Sauna Wood


Prosaunas Thermo-Spruce 1x4 Sauna Wood

Sale price$2.50

Prosaunas Thermo-Spruce 1x4 T&G STP Sauna Wood

Transform Your Sauna with Prosaunas Thermo-Spruce Wood

Looking to upgrade your sauna? Prosaunas' Thermo-Spruce tongue-and-groove 1x4 STP profile is the perfect choice for sauna walls and ceilings. This wood offers a smooth, refined finish with a rustic charm, characterized by its rich amber color and beautifully knotty appearance.

The Benefits of Thermally Modified Wood

Thermo-Spruce wood undergoes a completely organic process of thermal modification using heat, steam, and pressure. This process enhances the wood's properties, making it more desirable for sauna construction. Key benefits include:

  • Dimensional Stability: Less likely to warp or twist.
  • Water Resistance: Ideal moisture content for sauna environments.
  • Durability: Superior resistance to decay, pests, and fungi compared to untreated wood.

STP Profile for Elegant Sauna Design

The STP profile features narrow grooves between broad cladding boards with rounded edges, creating a refined and attractive wall surface. It can be combined with other wood profiles to achieve a unique and personalized sauna look.

Commitment to Quality

Prosaunas sources only the finest wood from Northern Europe and Canada, ensuring top quality and consistency. With over 55 years of experience in crafting premium sauna rooms across North America, our stringent standards guarantee your satisfaction.

Understanding Wood Sizes

In North America, lumber sizes are provided in "nominal" measurements, which represent the wood’s size when cut from moist logs. The actual size of the lumber will be less after drying and surfacing. Please refer to the diagram for actual dimensions.

Elevate your sauna experience with Prosaunas Thermo-Spruce wood. Our commitment to quality ensures your sauna will not only look beautiful but also stand the test of time.


  • Ideal for saunas
  • Greater durability
  • Resists warping
  • Free from chemicals
  • Eco-friendly
  • Ideal moisture content
  • Rounded edges
  • Narrow grooves
  • Broad cladding board
  • Natural wood
  • Can be combined with other profiles


    Species Spruce
    Finish Thermally Modified
    Wall Coverage 3.1" (80mm)
    Product Width 3.54" (90mm)
    Product Thickness .59" (15mm)
    Shipping Length Up to 10'

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