ThermoWood®
Thermally modified timber from Finland, treated by heat and steam with no chemicals.
ThermoWood is timber thermally modified in a controlled atmosphere of heat and steam (≈160–220 °C), with no added chemicals. The process darkens the tone, reduces the equilibrium moisture content and improves dimensional stability (less swelling/shrinkage) and resistance to fungi, which is why it's widely used in façades, decking and saunas. There are ranges oriented towards stability (Thermo-S) and towards durability (Thermo-D). As a trade-off, mechanical strength (bending/impact) decreases compared with the original timber, so it's prioritised for cladding and finishes rather than main structure.
480kg/m³
0.07W/m·K
B1 (con tratamiento ignífugo)
Tableros 5/4x6", 1x6, 1x6 Max, perfiles personalizables, longitudes 4-16 pies
Resistencia a pudrición clase 2estabilidad dimensionaldurabilidad 20 añoscladding exteriorinteriores.
744kg/m³
EPD ThermoWood Association
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Upgrade your listingTechnical questions and answers
- What is the carbon footprint (GWP) of ThermoWood®?
- ThermoWood® declares a GWP (A1–A3) of -666 kg CO₂e/m³ according to its verified EPD.
- What is the thermal conductivity (λ) of ThermoWood®?
- The declared thermal conductivity of ThermoWood® is λ = 0.07.
- What is the density of ThermoWood®?
- ThermoWood® has a declared density of 480.
- What is the fire resistance of ThermoWood®?
- The declared fire performance of ThermoWood® is B1 (con tratamiento ignífugo).
- Does ThermoWood® have an Environmental Product Declaration (EPD)?
- Yes. ThermoWood® has a verified EPD (S-P-02155) under EN 15804+A2.
- Is ThermoWood® a carbon-negative material?
- Yes. The biogenic carbon stored in ThermoWood® exceeds its manufacturing emissions (A1–A3), according to its environmental documentation.
Values as declared by the manufacturer or its EPD. Always check the current EPD/technical sheet for project-critical calculations.
