How to Use ThermoWood® in Interior Spaces | Lunawood
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How to Use ThermoWood® in Interior Spaces | Lunawood

  • Available in

  • Use

    Thermally modified wood for interiors
  • Applications

    Residential, hospitality, commercial, saunas
  • Characteristics

    Dimensionally stable, low maintenance, gradually develops silver color over time, optimal for use in all climates, pleasant texture and scent, 100% recyclable, no chemicals, no indoor air emissions or resin leakage, made in Finland
  • Certification

    PEFC, Forest Stewardship Council®, Nordic Swan Ecolabel, Avainlippu, International Thermowood Association, CE marking, EcoCompass, EPD
  • Guarantee

    A 20-year warranty is available for new projects, provided through authorized Lunawood partners. The warranty may be granted for façade and interior applications in EU countries and in other regions that recognize the European standard EN 335
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Lunawood is a pioneer in decorative wood solutions, with 25 years of expertise in the thermal modification of wood. Their mission is to reconnect people with nature by bringing the calming essence of the forest into urban environments.

Lunawood ThermoWood® products are ideal for interior applications that require durable, dimensionally stable, and visually consistent wood surfaces. Produced from certified Nordic pine and spruce, the material is thermally modified using only heat and steam, improving performance without chemical treatment while maintaining the natural character of wood.

1. Create Continuity Between Interior and Exterior Spaces

Lunawood ThermoWood interior application at Forum Braga
Forum Braga by Barbosa and Guimarães Architects in Portugal, 2018

Lunawood ThermoWood® allows architects and designers to create a coherent material language across different areas of a building. By using the same wood system in façades, interiors, and transitional spaces, exterior and interior environments can communicate through a unified material expression.

2. Consider the Tactile Qualities of the Material

Lunawood ThermoWood interior surfaces at B Home
B Home by Bragaño Architects in Spain, 2016, photo © Mariela Apollonio

The touch, visual quality, and subtle scent of Lunawood ThermoWood® contribute to a natural yet refined interior atmosphere. Variations in profile width, orientation, edges, and surface treatment can be used to create spaces with depth, rhythm, and sensory character.

3. Incorporate Smooth Interior Finishes

Planed Lunawood ThermoWood panels in an office interior
Photo: an office in Finland

Planed profiles made from Lunawood ThermoWood® provide a smooth surface suitable for walls, ceilings, and interior detailing. Natural features such as knots and grain variation remain visible, reinforcing the authenticity of the material while maintaining a controlled and durable finish.

4. Work with Natural Visual Variation

Lunawood ThermoWood battens and panels in a retail interior
Lynnwood Lane Retail Center by Living Planet Architects in South Africa, 2019

The brown tone, grain structure, and knots of Lunawood ThermoWood® introduce a natural visual rhythm to interior spaces. Battens and panels can be installed in different directions and widths to create varied surface expressions while maintaining a consistent material palette.

5. Introduce Natural Material Comfort

Lunawood ThermoWood interior application in Cafe Geometry of Taste
Cafe Geometry of Taste by Natalia Reznik in Russia, 2019

Lunawood ThermoWood® is resin-free and non-toxic, making it suitable for indoor environments where material safety and comfort are important. The thermal modification process produces a stable wood structure that supports long-term indoor performance.

6. Improve Acoustic Comfort with Wood Surfaces

Lunawood ThermoWood interior surfaces in Project Ö
Project Ö by Aleksi Hautamäki in Finland, 2019

Walls, ceilings, and floors finished with Lunawood ThermoWood® help soften sound within a space. Wood surfaces reduce echo by breaking and diffusing sound reflections, contributing to more comfortable acoustic conditions in workplaces, public interiors, and residential environments.

7. Specify ThermoWood® for Humid Interior Environments

Lunawood ThermoWood application in spa interiors
Hotel Kaktus by Byko + Maria Gelpí in Spain, 2019

The improved dimensional stability of Lunawood ThermoWood® supports reliable performance in interior spaces exposed to humidity and temperature variation, such as spas, saunas, and wellness environments.

8. Select the Appropriate Interior Profile

Lunawood ThermoWood interior profile selection
Sample room in Lahti office

For interior surfaces, Lunawood ThermoWood® is available in multiple profile types that support different spatial and design requirements:

  • Tongue-and-groove paneling
  • Planed individual battens
  • Textured or three-dimensional panels

9. Plan Maintenance and Surface Treatment

Lunawood ThermoWood interior application at Air Base Hotel
Air Base Hotel by Studio WG3 & ZT Geldner in Austria

Lunawood ThermoWood® is resin-free, which supports consistent finishing and reduces maintenance requirements. Standard interior finishes such as paints, oils, waxes, and varnishes can be applied to enhance appearance and protect the surface.

10. Follow Installation Best Practices

Lunawood ThermoWood installation example
Kitzbühellodges by CP Architektur in Austria
  • Use stainless steel fasteners
  • Provide adequate support structure according to local building regulations
  • Use concealed fixing systems where applicable
  • Avoid attaching heavy fixtures directly to cladding elements

Explore Lunawood's product catalog or visit their website for more information.

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