What is EcoThermo wood ?

EcoThermo wood by Sivalbp is a cladding and panelling solution that combines aesthetics, performance, and environmental friendliness. Thanks to an entirely natural thermo-stabilization treatment (without the use of chemicals), this wood gains durability, dimensional stability, and resistance to biological damage. Suitable for a wide range of indoor and outdoor uses, heat-treated wood cladding (EcoThermo wood) is particularly popular for demanding architectural projects, contemporary facades, and humid spaces such as bathrooms.

Key points to remember:

• Heat-treated wood cladding undergoes a natural heat treatment: it is heated to a high temperature without the addition of any chemicals. 
• Enhanced dimensional stability: heat treatment reduces shrinkage and warping and neutralizes resin pockets.
• Increased resistance: improved resistance to fungi, insects, and weather conditions, including in humid environments.
• Long-lasting aesthetics: uniform brown color, natural graying possible without finishing.
• Versatile wood species: Nordic pine, Nordic spruce, and larch can be used for exterior cladding or interior paneling.
• Low maintenance: Thanks to its durability and natural resistance, thermally treated wood requires less maintenance than conventional wood.

Thermostabilization is a natural and environmentally friendly heat treatment. The wood is gradually heated to a high temperature, around 200°C (≈ 215°C for outdoor use and ≈ 184°C for indoor use), with alternating phases of rehumidification. This process, carried out without chemicals, permanently transforms the structure of the wood.

Thanks to this technique, the wood boards benefit from:

• Increased stability and durability: less deformation over time.
• Neutralization of resin pockets, for a more uniform finish.
• A significant reduction in shrinkage and warping, which are common in untreated wood.
• A warm, uniform brown color throughout, giving the wood a natural and elegant appearance.

The result: more stable wood that is more resistant to weathering, retains its aesthetic appearance, and limits movement due to climatic variations.

Discover how Nordic Pine, Nordic Spruce, and Larch combine performance, durability, and aesthetics, and learn about their indoor and outdoor applications.

Thermo Nordic Pine Thermo, Thermo Nordic Spruce, Thermo Larch: use cases

Thermo Nordic Pine: versatility and durability

Thermo Nordic Pine is particularly popular for use in exterior cladding. Thanks to the thermo-stabilization process, this wood gains dimensional stability and natural resistance to insects and fungi. Easy to work with and aesthetically pleasing, it is equally suited to renovation projects and new builds.

Thermo Nordic Spruce : ideal for interiors and damp areas

Thermo Nordic Spruce offers a warm, uniform color that enhances wall coverings and ceilings. Its increased resistance to moisture makes it a suitable choice for bathrooms, saunas, or interior spaces subject to climatic variations.

Thermo Larch: robustness and aesthetics for outdoor use

Thermo Larch combines the natural robustness of larch with the advantages of heat treatment. It is a preferred species for wood cladding facades thanks to its durability in outdoor environments and its aesthetic aging (silver-gray patina). It is ideal for projects seeking an authentic finish with low maintenance.

Thermo-treated wood is appealing due to its natural appearance and exceptional resistance to external damage. Thanks to a chemical-free heat treatment, it becomes rot-proof and stable, ideal for outdoor applications such as decks, siding, and garden furniture. However, to maintain its qualities over time, regular maintenance is recommended.

Gentle and regular cleaning 

Start by cleaning with clean water or a neutral soap, using a soft brush. Avoid abrasive products or high-pressure cleaners, which can damage the surface of the wood.

UV protection 

Although thermally modified wood is naturally weather-resistant, it is not immune to the graying caused by UV rays. This color change, which is purely aesthetic, can be prevented or limited with the right protection. To preserve its original color, it is advisable to apply a specific oil or saturator, taking into account the exposure of the facade or surface concerned. A facade that is highly exposed to the sun will require more frequent treatment than a shaded area. This treatment nourishes the wood deeply, slows down the discoloration process, and strengthens its resistance to external aggressions. By incorporating this step into your maintenance routine, you will prolong the natural beauty of the wood while enhancing your outdoor space.

Inspection and occasional maintenance

Remember to inspect your thermally modified wood regularly, especially after winter. If stains, moss, or dirt appear, clean them quickly to prevent them from becoming ingrained. Occasional maintenance prevents damage and maintains the wood's aesthetic appearance.

In conclusion, thermally treated wood is an innovative and sustainable solution for your cladding and paneling projects. Thanks to its natural heat treatment, it offers an ideal combination of performance, aesthetics, and environmental friendliness. Whether for exterior or interior applications, EcoThermo wood ensures exceptional longevity while retaining a natural beauty that evolves harmoniously over time. Choosing this technology means choosing a noble and responsible material that is perfectly suited to contemporary sustainable construction requirements.