Wooden has been a depended on construction subject matter for hundreds of years, valued for its versatility, energy, and attractiveness. However in climates like the United Kingdom the place moisture, temperature shifts, and organic decay problem bushes’s longevity, herbal wooden frequently wishes chemical remedies or heavy upkeep to accomplish long-term. That is the place thermally changed wooden gives a sturdy and chemical-free resolution for building execs.
What Is Thermally Changed Wooden?


Thermally changed wooden, sometimes called thermowood, is herbal wooden that’s gone through a high-heat remedy procedure, in most cases between 160–215 °C, in a managed surroundings the usage of simplest warmth and steam. This alters the wooden’s inside construction, lowering moisture absorption, expanding dimensional steadiness, and considerably bettering resistance to rot, fungi, and bugs. The result’s a tougher, solid, and environmentally pleasant subject matter. All with out chemical compounds.
Why It Works?
- Stepped forward sturdiness
Thermally changed wooden withstands rain, humidity, and local weather fluctuations a ways higher than untreated bushes. After thermal amendment, softwoods like pine soar to sturdiness elegance 2, whilst hardwoods like ash succeed in a category 1 decay resistance of 25+ years. - Dimensional Balance
Thermal amendment lowers the wooden’s absorbency, that means that publicity to moisture reasons it to swell a lot much less. It additionally improves dimensional steadiness – a very powerful for keeping up tight cladding strains, decking joints, or facade panels. - Low-Upkeep Efficiency
External surfaces may also be left untreated to climate naturally right into a silvery-grey patina or maintained with periodic oiling to retain authentic colour. Both means, thermally changed wooden calls for a ways much less maintenance than standard bushes. - Eco-Pleasant and Chemical-Unfastened
No poisonous preservatives are used. Thermal amendment makes use of simplest warmth and steam , making it more secure for installers, occupants, and the surroundings.
Sensible Issues on Web site
- Workability
Thermally changed wooden has a decrease weight and density, making the wooden more uncomplicated to paintings with. - Mechanical Houses
Thermal amendment relieves inside stresses within the wooden, leading to straighter forums, much less warping, and higher dimensional steadiness. This makes it more uncomplicated to device, set up, and care for tight tolerances on website. - Much less waste
Its predictable habits simplifies making plans for cladding, decking, and joinery packages. Because of meticulous sourcing, high quality sorting, and end-matching profiles, you want to inventory about 11% much less subject matter in comparison to non-thermally changed wooden. - Completing Choices
Thermally changed wooden’s wealthy, heat tones (from gentle gold to darkish brown relying on species) create a top rate look for facades, decks, and interiors. UV-protective oils can maintain color or it may be painted to create a in reality vibrant aesthetic; differently, herbal weathering produces a silvery gray end. - Sustainability & Certification
Search for merchandise with an Environmental Product Declaration (EPD) that gives clear details about the environmental affect all the way through its lifetime. Sourcing FSC or PEFC-certified inventory helps accountable forestry requirements.
Excellent Packages in Building
Utility | Advantages |
Exterior Cladding | Dimensional steadiness maintains blank facade strains; very good sturdiness; recent aesthetic |
Decking | Withstands rainy stipulations; resists fungal enlargement; barefoot-safe because it doesn’t overheat within the solar |
Non-load-bearing out of doors constructions (e.g. pergolas, fences, privateness monitors, lawn options) | Superb dimensional steadiness and rot resistance; diminished warping and twisting over the years; sexy look with minimum upkeep |
Inner Areas | Appropriate for interiors, together with humid areas like saunas, pool spaces, and converting rooms |
Why Specifiers Must Take Observe


- Longer provider existence approach diminished lifecycle prices
- No chemical preservatives or remedies required
- Superb aesthetics for modern designs
- Sustainable sourcing helps inexperienced construction certifications
- Predictable efficiency simplifies design calculations
About Thermory
Thermory is likely one of the global’s main producers of thermally changed wooden, with over 25 years of experience within the box. Combining complicated thermal amendment generation with sparsely sourced bushes, Thermory provides sturdy, solid, and lovely bushes answers utilized in architectural and building initiatives international — from residential trends to large-scale business structures.