Thermally modified wood

eco-friendly solution – a beautiful, durable alternative to traditional wood, perfect for decking, cladding, interior applications. Meet thermally modified wood, a sustainable and innovative material that is revolutionising the world of construction and design.

ecologic
aesthetic
long-lasting
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thermally modified wood

naturally treated wood using only heat and steam, which enhances the natural properties of wood to an extraordinary level.

unlike other wood treatment technologies, “thermowood” is highly durable, lightweight and resistant to mould, insects and rot. The process and use of thermal modification is also considered to be environmentally friendly, so it is easy to see why people are talking about this type of wood and increasingly choosing it over other options.

dimensionally stable

thermally modified wood does not react as strongly to changes in humidity as untreated wood (reducing the risk of swelling, cracking and shrinkage), so it keeps its shape better.

completely environmentally friendly

as it is produced without the use of any chemicals or extraneous materials, thermally modified wood is an environmentally friendly raw material, produced using natural physical methods.

long-lasting

“thermowood” is resistant to rot and fungi – the heating process, which breaks down the hemicellulose, leaves the wood without the right nutrients to allow rot and fungi to develop and grow.

catalog

profile T1

for exterior finish

profile T1

for exterior finish

thickness: 18 mm

width: 145 mm

lengths: 2000-5600mm

wood: thermically modified – spruce

profile T2

for exterior finish

profile T2

for exterior finish

thickness: 18mm

width: 165 mm

lengths: 2000-5600mm

wood: thermically modified – spruce

profile T3

for exterior finish

profile T3

for exterior finish

thickness: 20 mm

width: 140 mm

lengths: 2000-5600mm

wood: thermically modified – spruce

profile T4

for exterior finish

profile T4

for exterior finish

thickness: 20 mm

width: 150 mm

lengths: 2000-5600mm

wood: thermically modified – spruce

profile M1

log house cladding imitation

profile M1

log house cladding imitation

thickness: 35mm

width: 200 – 380 mm

lengths: 2000-5600mm

wood: thermically modified – spruce

profile T5

for exterior finish

profile T5

for exterior finish

thickness: 20 mm

width: 135 mm

lengths: 2000-5600mm

wood: thermically modified – spruce

structural timber

for facades/terraces/frame building

structural wood

for facades/terraces/frame building

thickness: 45 mm

width: 45 – 145 mm

lengths: 2000-5600mm

wood: thermically modified – spruce

profile TR1

for terrace deck

Profilis TR1

TERASOMS

thickness: 28 mm

width: 120 mm

lengths: 2000-5600mm

wood: thermically modified – spruce

why choose thermally modified wood?

cosiness:

  • as a finish material its properties has a positive effect on the human mind, calming and relaxing. This is why thermally modified wood elements are increasingly found in educational establishments, shopping and business centres, and contemporary interiors.

Easy to maintain:

  • heat treatment effectively removes resin from the wood, reducing the risk of splitting or tearing. This change creates a better base for surface coatings and increases the durability of products. In addition, due to its inherent durability, which is classified as Sustainability Class 2, thermally modified wood can remain uncoated without the need for additional protective treatment. Even when exposed to the outdoor environment, it is resistant to rotting and does not decay when exposed to natural weather conditions.

Fire resistance:

  • Unlike traditional wood, thermally modified wood produces less flame and smoke during burning due to its lower density and organic extract content. According to the classification established by the European Commission, thermally treated wood is classified as flammability class D-s2-d0. In addition, if properly treated with fire-resistant materials, the wood can be classified in the higher flammability class B (B-s1-d0).

F A Q

Thermowood is any type of wood in which the structure is altered by high temperatures and steam. The entire thermo-modification process takes place in special chambers controlled by sensors and a computer.
The temperature changes the structure of the wood and the steam protects the wood from structural damage and cracks.
The heat gradually rises to 230 C over 4 days.

The wood takes on an attractive appearance thanks to its striking and darker colours. The appearance of softwood becomes similar to hardwood.

Since the wood has been altered at the molecular level, there is no need to protect it. However, darker coloured thermowood will usually turn naturally grey after exposure to the sun. By oiling or staining, thermowood can retain its original colours.

Any wood can be used. However, in northern Europe, softwood like spruce or pine is the most common wood used for thermo-modification. This makes it a reliable and attractive construction timber.

  • Stable dimensions – the intense heat to which the wood is exposed during production dries the wood deep into the heartwood, removing all moisture and resin from the wood. This makes it the perfect material for outdoor wooden terraces. Thermally modified wood does not react to changes in humidity as strongly as untreated wood (reducing the risk of swelling, cracking and shrinkage) and therefore retains its shape better. Modified wood does not give off sap or resins even at high temperatures.
  • Environmentally friendly – the softwood used in the production of thermal modification comes from well-managed forests, and since no chemicals or foreign substances are used in its production, Thermally modified wood is an environmentally friendly material, produced using only natural methods.
  • Resistance to rot and fungi – the heating process, which breaks down the hemicellulose, leaves the wood without the right nutrients to allow rot and fungi to grow and develop.
  • Durability – the heat treatment increases the average lifetime of the wood. The durability of the wood depends on the exact heat to which the wood is exposed, but generally the higher the temperature, the longer the durability.
  • Better insulation – heat-treated wood is much more porous than untreated wood, which greatly improves its insulating properties.
  • Environmentally friendly – unlike pressure-treated wood, heat-treated wood can be discarded or recycled as untreated wood when no longer needed.

Thermally modified wood is an excellent material for outdoor projects due to its high resistance to rot and moisture. Some of the most popular outdoor uses include:

  • Exterior cladding
  • Terraces
  • Railings
  • Wooden sunscreens
  • Exterior wooden design elements

Its attractive appearance and removal of resin make it ideal for interior projects such as:

  • Interior cladding
  • Sauna benches
  • Flooring

More questions?

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