Heat-Treated Timber
ThermoWOOD®
Thermowood uses a modification method using heat/high temperatures and steam to change the properties of the wood - enhancing durability against wood destroying fungi, dimensional stability, and appearance. We are proud to have supplied some of the largest thermowood cladding projects in the UK.
Thermally Modified Excellence
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 including decking boards, floorings, timber cladding, wood shingles, saunas, and hot tubs.
No Chemical Preservatives
Enhanced Dimensional Stability
Suitable for Saunas & Steam Rooms
Internal & External Applications
Why Thermowood is the preferred choice for demanding applications.
Why ThermoWOOD® is the preferred choice for your projects.
Heat-Treated Durability
Thermally modified at high temperatures to enhance natural resistance to decay, eliminating the need for chemical preservatives.
Stable & Easy to Maintain
Reduced moisture absorption and improved dimensional stability make Thermowood easy to oil, paint, and maintain over time.
Versatile Applications
Suitable for both internal and external use, including saunas, steam rooms, cladding, and decking applications.
Versatile Applications
External Cladding Image
External Cladding
Durable cladding without the need for additional preservative treatments.
External Cladding
Saunas & Steam Rooms Image
Saunas & Steam Rooms
Perfect for high-temperature, high-humidity environments.
Saunas & Steam Rooms
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Interior Paneling
Bring natural warmth and character to interior spaces.
Interior Paneling
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Decking
Stable and durable decking that resists warping and splitting.
Decking
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Garden Structures
Long-lasting pergolas, gazebos, and outdoor features.
Garden Structures
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Architectural Features
Create distinctive design elements with thermally modified timber.
Architectural Features
Trusted by Professionals
"Thermowood has been perfect for our sauna project. The stability in high heat and humidity is exceptional."
"We've used Thermowood on several external cladding projects. No preservatives needed and it looks fantastic."
"The dimensional stability of Thermowood makes installation straightforward. Our clients love the natural finish."
Transform Your Project with Thermowood
Ready to enhance your building with thermally modified timber? Contact our experts for product selection and pricing.