Thermowood uses a modification method using heat / high temperatures and steam to change the properties of the wood e.g the durability against wood destroying fungi, dimensional stability, and appearance. We supply Thermowood Redwood D Pine, Thermowood Ash, Thermowood Poplar, Thermowood Ayous Clear Cedar and Thermowood Radiata Pine. We are proud to have supplied the largest thermowood cladding projects in the UK for 2023.

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Thermowood D is classified as durable having been treated to higher temperatures and can be used for both internal and external applications whilst Thermowood S is treated at lower temperatures is classified as stable and used for internal applications. Using heat for thermal modification has been known to have existed since the Viking period but has become popular in the last 10-15 years with large-scale commercial production plants being set up across the globe, mainly in Scandinavia and Estonia. The process is used to enhance the durability and stability of timber products for both internal and external applications for example decking boards, floorings, timber cladding, wood shingles saunas, hot tubs for both internal and external applications. Recently we have seen the rise in hardwoods and clearer high-quality Thermowoods being readily available and an increase in factory finished pre-painted and fire retardant treated Thermowoods.

Profile Options

Thermowood products are available in the following profiles:

Timber Focus Profile 1



Timber Focus Profile 6


Timber Profile 11


Timber Focus Profile 12


Timber Focus Profile 15


Timber Focus Profile 23


Timber Focus Profile 29


Timber Focus Profile 32


Timber Focus Profile 38


Timber Focus Profile 109


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Our BIM Objects can be downloaded from Bimstore or from NBS National BIM Library. Please feel free to contact us for more information.

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