The manufacturing and use of both softwood and hardwood species,
such as pine, spruce, Ash And Iroko has produced highly positive
results

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.

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

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.

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

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

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.

Tests have shown that there are no harmful emissions from
ThermoWood, but the smell might not be appreciated by everyone

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.

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

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