Thermory and Ha Serv merge to become the world’s largest producer of thermally modified wood and sauna materials
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Thermo-treated wood for indoor and outdoor use
Thermo-treated wood is environmentally friendly, stable, durable and beautiful. Our product selection includes various thermo-treated wood products for sauna interiors, readymade products, as well as decking and cladding.
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Valuing and adding value to wood
We value and cherish wood as an environmentally friendly and renewable construction material. Wood can make previously bleak façades look warm and inviting. It has a similarly transformative power for saunas.


Flexibility and quality
Whether it’s natural or thermo-treated wood, basic profile boards or complicated details made of glulam, construction materials or readymade designer products, we can get the best out of wood thanks to our experience and top-of-the-line production equipment.
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