We Want to Leave a Lasting Impact

At Thermory we believe in the beauty of wood. Today’s urban environments have created a distance between humans and nature with massive overuse of concrete, steel and plastics in architecture and construction. We want to change that by creating a more natural and sustainable environment that we all can be proud of for generations to come. If that’s a vision you share, you’re in the right place.

Global Leader in Thermal Modification – a Sustainable Technology for High Quality Lasting Solutions

Our expertise is in thermally modified wood process and technology. Using only heat and steam, we create extremely durable and climate resistant decking, cladding, flooring, wall paneling and sauna products that are unrivalled in both performance and sustainability vs usual alternatives (plastic composites, chemically treated woods, tropical hardwoods, etc.).

Enhancing Environments with Outstanding Interior and Exterior Design

Since more than 20 years, we work closely with architects, designers, real estate developers and specialized distributors across the world. Through this network of like-minded partners, we call it the Thermory Tribe, we have implemented thousands of beautiful projects across 50+ countries on all continents.

Our passion for wood, drive for innovation and commitment to sustainability, have created a trust that makes Thermory a leader in the market today.

Thermo-ash decking in Denmark schoolhouse ash cladding

Our Company

Thermory is the world’s largest manufacturer of chemical-free thermally modified timber and sauna materials. We export over 90% of our production to more than 50 countries. We’re dedicated to offering real wood solutions that exceed expectations and enhance environments. Our product portfolio includes decking, cladding, and floorboards made from thermally modified timber and coated wood products for interior and exterior use. We are also a major player in the sauna, spa, and wellness sector; in fact, we’re the world’s leading manufacturer of sauna materials and ready-made saunas.

No. 1 – global leader in modified timber

50+ export markets worldwide

160 000 m3 annual volume of thermal modification

€100+M sales revenue

10 production units in Northern Europe: 8 factories & 2 sawmills

680 employees

We naturally enhance wood using only heat and steam

Complete modification of every fiber.

Our process modifies each board completely, leading to unrivaled durability and stability, delivering superior functionality with natural beauty of real wood.

Thermally modified timber is our key strength at Thermory.

With our exclusive, state-of-the-art technology and years of expertise, we know exactly how to bring out the best in wood. Thermally modified wood is natural – its properties are enhanced using just heat and steam. This chemical-free process results in an environmentally friendly and aesthetically pleasing material
that’s significantly more durable and stable than conventional timber.

As well as offering these practical benefits, our thermal modification treatment also creates dynamic visual effects, with the wood taking on an appealing darker brown shade. The intensity of the color depends on the wood type and the duration and temperature of the modification process. This gives you the opportunity to choose between lighter and darker materials to suit your desired color palette. Thermally modified timber is suitable for interior and exterior use in both homes and public spaces.


Dimensional stability due to a significantly reduced equilibrium moisture content

High Durability

Improved durability and a high level of rot resistance


The wood is enhanced with our chemical-free modification process

Aesthetic appeal

Warm colors that create a cozy atmosphere and a luxurious look


Easy handling and reduced thermal conductivity


Clean process. Responsible sourcing.
Sustainable solutions.

We like to raise the bar, not meet it. Most importantly, our thermal modification process is entirely natural, using only heat and steam.

This makes our products ecologically superior to most alternatives - tropical hardwood, plastic composite materials or toxiacally treated products.

  • Sourcing: We believe in the preservation of natural resources, and understand how different forests and environments renew. We don’t abuse the privilege of natural wood, and we carefully source for quality and responsibility – never from rainforests.
  • Lumber: Our lumber partners know that our standards are high. Our wood is carefully inspected, tested, trimmed, machined and modified before being sold. Our customers notice the difference.
  • Quality: We frequently test our products with 3rd parties for durability (class 1,2), fire resistance (CE label) and environmental forestry practices (Swan Label, PEFC).

Join the Thermory Tribe

Key part of our success so far comes from the passion of like-minded people - we call it the Thermory Tribe effect. We genuinly care for the people who work at Thermory as well as for our customers around the world, many of whom have been with us on this journey for a long time.

If you want to be part of a passionate, committed and fun team – reach out and look to join our Tribe.

Corporate news

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