Sustainable, Durable, and Beautiful

Lunawood ThermoWood® is grown and strengthened for nearly 80 years in the harsh climate of Scandinavia. Thermal modification creates ideal material that performs in demanding applications.

Lunawood ThermoWood® is highly suitable material for exterior cladding due to its dimensional stability, weather resistance, durability, and beautiful appearance.

Lunawood ThermoWood is thermally modified using heat and steam with zero chemicals, now available unfinished and prefinished from Delta Millworks.


Key Features & Benefits


  • Dimensionally stable
  • Highly durable
  • Expected service life of 30 years in exterior and decking applications
  • Thermally modified without chemicals
  • Suitable for all climates

Lunawood Thermowood®


From certified Nordic Suppliers

Carbon Storage


Lunawood absorbs five times more carbon compared to production emissions

Natural Modification


No chemicals used


Responsible Sourcing

  • Chain-of-custody certification provides independent verification that the material originates from sustainably managed Nordic forests
  • PEFC forest management certification ensures forests are managed in line with environmental, social, and economic requirements
  • Only 75% of the annual growth is harvested; when one tree is cut, four new trees are seeded

Beauty In Imperfection

Naturally Weathered Lunawood

Thermal modification creates a distinctive, caramel brown color. Over time, unfinished Lunawood will gradually develop a silver gray appearance with variation depending on UV exposure. This natural weathering can take years and has no affect on the durability and stability of the wood.

Featured Project

Reed House

Situated alongside a pond, this house uses unfinished Lunawood, clad vertically—a design decision inspired by the reeds at the pond’s edge.

The exterior of the home will weather slightly over time, showing the passage of time and linking the architecture to the natural elements that surround it.

The Architect's Newspaper

Best of Products 2023

We’re thrilled to announce that this collection of Lunawood ThermoWood® products has been awarded Best of Products by The Architect’s Newspaper in the Building Materials: Timber category.


Lunawood Projects Around the World

These projects using Lunawood Thermowood® illustrate that this material performs in all climates.