FAQs Thermowood

  1. Can you heat-treat different wood species? . The manufacturing and use of both softwood and hardwood species, such as pine, spruce, birch, and aspen, has produced highly positive results.
  2. How long does ThermoWood last?
    Although evidence from long-term experience of the use of ThermoWood is not yet available, tests have shown that the material’s resistance to decay is far superior to that of untreated softwoods and equal that of many tropical hardwoods. In addition, good dimensional stability increases the wood’s life span. The service life can be affected by many factors other than resistance to decay – such as the level of maintenance, especially for the surface treatment, and general wear and tear. Following the guidelines presented in this handbook should also assist in lengthening the life expectancy of the product.
  3. What are the guarantees?
    Although there are no specific guarantees for the product, tests conducted by several independent research institutes have shown consistently positive results where durability is concerned.
  4. Why is ThermoWood so durable despite the resin and extractives having boiled away?
    The durability of ThermoWood is based on the changes in chemical compounds in the wood. Wood’s hemicellulose (sugar compound) is degraded, leaving no nutritive matter for fungi.
  5. Are any chemicals added as part of the process?
    No chemical additives are used in the ThermoWood production process; only energy and steam are required. Hence, ThermoWood can be utilised/discarded like normal wood after its life span is complete.
  6. Can ThermoWood be used in contact with the ground?
    Results have shown that even in ground contact ThermoWood does not decay; however, when constantly immersed in water or making soil contact, it loses its strength properties due to certain chemical reactions. The mechanisms are yet unknown, and further research is needed. This is why it is recommended that ThermoWood not be used in continuous direct contact with moist soil.
  7. What kind of surface treatment is needed for outdoor use?
    ThermoWood can be used outdoors without surface treatment, but this will lead to greying and shaking of the surface, as with normal wood. The type of surface treatment desired varies with the end use application. Products that require the original ThermoWood appearance should be treated with transparent paint containing some brown pigment.
  8. Is the smell of ThermoWood harmful?
    Tests have shown that there are no harmful emissions from ThermoWood, but the smell might not be appreciated by everyone.
  9. Does the smell disappear?
    If surface treatment is applied to a product made of ThermoWood, the smell will disappear and not return. If ThermoWood is used without surface treatment, the smell will gradually dissipate until reaching a level where it is no longer noticed except when smelled from a very close distance.
  10. Can ThermoWood be glued?
    Practical experience has shown that gluing of ThermoWood is possible with all adhesive types. If water-based adhesives, such as PVAc adhesive, are used, the decreased water absorption capacity of ThermoWood must be taken into account where drying time is concerned. In the case of PVAc in particular, the adhesive manufacturer’s specific instructions for the product and its use with ThermoWood must always be followed.
  11. Can ThermoWood be used in load-bearing structures?
    So far, most of the strength tests have been carried out with small, defect-free test pieces. Further testing is required with larger test pieces and with varying numbers of knots and different knot types. Due to insufficient information, we recommend that ThermoWood NOT be used structurally for load-bearing purposes for the time being.
  12. Can Thermowood be used in a Sauna or the benefits of using thermwood in a sauna- Due to its highly hygienic nature, colour, and decreased thermal conductivity, ThermoWood® is well suited for sauna benches.
    However, fast wetting and drying cycles in a high-temperature environment can cause benches to split at the ends. To avoid this, it is recommended to seal the ends with oil, wax, or varnish.
  13. What is a simple definition of thermal modification, heat treatment, thermowood processes-.
    It has been described by others to help simplify it as putting the timber in a oven baking the timber removing resionous or simple sugars giving it a golden brown colour the presecnce of heat and steam provides a chemical change in the wood. Removing or reducing the simple sugars that micro-organisms tend to attack in unmodified wood.
  14. What is the quality of thermowood, thermal modification- Thermal modified timber qualitis tend to vary between species and suppliers, you can source premium knotless clear boards avaialbel in some pines, ??
    <br> hardwoods But the bulk of the thermowood available on the market ius rustic and has knots to it quality Nordic or Gost


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