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Premium Thermo-Aspen 1X4 T&G STS4 Wall Cladding

Premium Thermo-Aspen 1X4 T&G STS4 Wall Cladding

by ProSaunas
SKU WOOD665-1

Please Note: There is a $249 flat-rate shipping fee on all wood orders other than a sample. Samples ship for FREE!

$4.40 - $44.00
$4.40
$4.40 - $44.00
$4.40
Request a personalized quote!

Thermal modification is a completely organic process that uses heat, steam, and pressure to physically enhance the properties of the wood. Sauna wood that is thermally modified is more dimensionally stable, more water-resistant, has an ideal moisture content.

Thermo Aspen does not secrete resin, splinter, and is comfortable to the touch in high heat, making it an ideal sauna material.

Note that lumber sizes are nominal, with actual sizes being slightly smaller after drying and surfacing.

  • Thermo-Aspen Wood: Thermally modified for improved durability and stability.
  • T&G STS4 Profile: Tongue-and-groove paneling with narrow, angular grooves.
  • Ideal for Saunas: Designed for high heat and humidity environments.
  • Greater Durability: Thermal treatment improves long-term performance.
  • Resists Warping: Stable in changing sauna heat and moisture conditions.
  • Chemical-Free: Thermal modification process uses no added chemicals.
  • Lightweight: Easy to handle and install.
  • Eco-Friendly: Sustainably produced natural wood.
  • Balanced Moisture Content: Optimized for sauna environments.
  • Natural Wood Appearance: Smooth grain with a clean, modern look.
  • Compatible Profiles: Can be combined with other matching sauna panel profiles.
  • Finish - Thermally Modified
  • Wall Coverage - 3.1"
  • Product Width - 3.54"
  • Product Thickness - .59"
  • Lengths Available - Up To 10'

Wood orders ship via FedEx Ground (smaller orders) or LTL freight with lift gate (larger orders), depending on quantity, size, and weight. All orders are packaged securely in cardboard or on custom pallets.

Delivery Timeline

  • 2-4 Weeks