Kodiak Thermo-Spruce wall cladding


Use Thermory’s Kodiak range to create a particularly rugged and natural atmosphere. Its sturdy boards with their brushed texture were inspired by the Kodiak brown bear, ruler of the Alaskan forests, representing the harsh and wild charm of the local nature.

Like all Thermory products, the Kodiak range is also thermally modified using only heat and steam. Modified to the core, the boards are dimensionally stable and offer rot resistance for at least 25 years if correctly installed. Kodiak boards will grant you a natural and rustic feel and the first-class qualities of thermally modified wood.

Very good durability and beautiful knots

Stylish and clean overall impression, easier to install

Spruce at its best

Accentuates the grain pattern of the wood

The wood becomes more durable and its moisture content decreases

Resistance to rot 25+ years

Wood from sustainable forests with chemical-free modification

Why choose Kodiak Thermo-Spruce?

  • Choose Kodiak Thermo-Spruce, if you prefer rustic-looking wood and require superior durability.
  • Wider-than-usual boards ensure extra fast installation with fewer seams, creating a stylish and modern feel.
  • The brushed top surface brings out the natural structure of the wood.
  • Thermal modification makes spruce a wooden material of the highest durability class (CLASS 1) that will adorn your facade for decades to come.
  • The moisture absorption capability and rate of the wood is reduced as a result of thermal modification, in turn causing less moisture-induced deformation. Kodiak boards are so stable that we recommend installing them with PC clips.
  • Thermal modification adds a beautiful golden brown tone to spruce.
  • We offer thermally modified spruce that bears the Nordic Swan Ecolabel. This means that the wood originates from responsibly managed forests, is free of chemicals and is extremely durable when used outdoors. 



Additional options for flawless finish and easy installation

Flawless finish,
hidden fixing

Reduces waste,
saves expenses

Innovative and simple
fixing methods

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Spruce is less resinous

Spruce (Picea abies or Nordic spruce) is a coniferous tree of the pine family in the genus Picea, widespread in Europe.
Without any treatment, spruce has almost white wood, is lightweight and soft and has medium mechanical properties. Spruce splits more easily than pine but it is less resinous. Spruce is very well-suited for thermal modification, becoming significantly more durable and stable thanks to this process and acquiring a beautiful golden brown tone.

  • Decking
  • Cladding

The tone of the wood changes over the course of time.

Thermal modification makes the tone of spruce wood a beautiful golden brown. A brushed finish will further highlight the depth and pattern of the wood.

As with any other wood, the surface of thermally modified spruce will acquire a natural silver grey colour over time. This process starts immediately after the products are installed and can take a few months to several years depending on how much UV light they are exposed to. The durability of the boards is not affected.

Thermory Benchmark termokuusk

Wall cladding maintenance To oil or not to oil?

Thermally modified wall cladding does not necessarily require surface treatment. However, if you would like to preserve or change the tone of thermally modified wood, we recommend oiling the boards before installation using UV-resistant oil and repeating the oiling process every 3 years. The oil should be applied only to clean, level, dust-free surfaces. Before applying oil to the whole cladding, test it on a small piece of wood using a small quantity of oil. Observe the oil manufacturer’s instructions.

Three recommendations for installing Kodiak Thermo-Spruce wall cladding

The right installation techniques are extremely important to make your panelling last for a long time.

  • For the substructure, we recommend using joists of thermally modified spruce of durability class 1. This way the substructure will endure just as long as the panelling itself.
  • By choosing wall cladding with matching tongue-and-groove ends, you can install boards of different lengths with the least possible time, material costs and labour input. Any two boards do not necessarily have to meet directly over a joist.
  • When using screws for installation, screw heads must not be forced too deeply into the wood. The screw heads must be almost flush with the wood surface to avoid water penetration.