Thermowood® (Lunawood)

ThermoWood® is a physically engineered timber that is produced by specialist heat treating Scandinavian Redwood / Whitewood. It is this alteration in structure that results in a more stable, anti-fungal timber ideal for use in exterior applications.


Our Thermowood is produced by the Finnish company Oy Lunawood Ltd, who are one of the world’s leading producers of Thermowood. They were forerunners in the development of thermally modified timber and founder members of the International ThermoWood Association.


We are proud to offer the Lunawood brand.


Finish: A good and consistent face finish. Will go grey over time, if no stain or paint is applied.


Features and Benefits: A heat treatment process means there are no chemicals used and therefore no environmental considerations. Improved dimensional stability means that the wood accepts stains and finishes very well.


Price: Low to Medium


Lunawood Production Process

Thermowood is produced by heat treating selected Scandinavian Redwood (Pinus sylvestris). Lunawood use Northern Scandinavian Redwood that is conditioned in a unique continuous kilning process, heating the timber to 212° Celsius whilst protecting it with steam. This thermal process enhances the chemical and physical properties of the timber providing many benefits. In external applications (BS EN 335 Use Class 3) Lunawood meets the requirements of Durability Class 2 (BS EN 350).


After thermal modification the timber becomes naturally durable making it suitable for use as cladding, decking or other outdoor applications, without the need for toxic chemical preservative treatment. Thermal modification can also be applied to other timber species.


Our Thermowood (Lunawood) is recognised by the Building Research Establishment (BRE) which endorses a 30 year service life when used for cladding and decking.


Lunawood is also certified with the European Standard CE mark ensuring it meets EU consumer safety, health and environmental requirements.


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