• Resistance to Decay

    Thermal Modification significantly reduces the amount of hemicellulose (sugar molecules) in wood- making the product less appealing to fungi and thus resistance to Decay is achieved.

  • Improved Dimensional Stability

    Reduced number of water-absorbing components.

    This minimizes expansion & contraction, providing long-lasting structural integrity with a moisture content of 4-7%

  • Environmental Adaptability

    Performs exceptionally in various climates & conditions while maintaining desired shape.

  • Economical

    Reduces the need for maintenance & repairs matched with less wear on equipment due to the lack of resin secretion.

The Process


Thermal-Mod (roasted) is a process that preserves the wood by bringing it to a “natural state."

This means that anything extra (fungi, H2O) is pushed outwards during the cooking process, while the heating phase seals up the pores of each piece. 

This extends the lifespan of the lumber as well as making it more durable to the elements. However, due to the mechanical properties of the lumber, it is more susceptible to cosmetic damage if not properly finished.

Justin Beckner (UG Writter)

“Somewhere between lumberjack and mad scientist, the folks at Superior Thermowood may very well hold the key to your ‘holy grail’ tone.”

University of Minnesota

“This longer-lasting, lower-maintenance material is ideal for covering exterior walls and interior floors, as well as for window frames, door frames and deck railings..”