Process

Thermo-D treatment of every fiber

What is ThermoWood®?

 

ThermoWood® is a patented brand created by the International ThermoWood® Association. It specifies the natural preservation process to transform wood into a durable product. Through every fiber, the durability class improves from IV or III up to I which implies a lifespan of over 25 years for class I. (EN 350-1)

 

 

Consistent quality due to standardized treatment

 

As a member of the International ThermoWood® Association, our standardized process is identical to the Finnish process, which sets the gold standard of all thermal treatments. Twice a year, we are audited by a Notified Body to maintain a high quality.

TWA TWT
BSI
WOOD
Process Beam
Process Scheme 1

Thermo-D treatment of every fiber

What is ThermoWood®?

 

ThermoWood® is a patented brand created by the International ThermoWood® Association. It specifies the natural preservation process to transform wood into a durable product. Through every fiber, the durability class improves from IV or III up to I which implies a lifespan of over 25 years for class I. (EN 350-1)

 

 

Consistent quality due to standardized treatment

 

As a member of the International ThermoWood® Association, our standardized process is identical to the Finnish process, which sets the gold standard of all thermal treatments. Twice a year, we are audited by a Notified Body to maintain a high quality.

TWA TWT
BSI
WOOD

ThermoWood® process in 3 phases

Phase 1

Timber dries and moisture content decreases.

  • High-temperature drying: 212-413,6°F
  • Moisture level: 20% -> 2%

Group 15354

Phase 2

Kiln is kept at a steady temperature to modify the wood.

  • Thermal modification: 413,6°F
  • Moisture level: 2%

Group 15353

Phase 3

Temperature is lowered and the moisture content is increased with steam and water.

  • Conditioning/cooling
  • Moisture level: 2% -> 4-7%

Group 15352
ThemoD-01-ENG

The ThermoWood® process, a part of

Our firm’s DNA

 

LDCwood® ThermoWood® is the result of connecting two concepts, with the thoughtful sourcing of our wood on the one hand, and the efficient preservation of it on the other. This is where we perfectly align our logistical strength with the advanced technology behind our 6 kilns.

 

Our operators’ minds

 

Our philosophy is to let the wood direct the process, not the process direct the wood. Our Thermo Technicians, like the world’s most accomplished bakers, take on their job with the utmost attention to detail to achieve the perfect finished product, everytime.

Durability class

When exposed to weather without surface treatment, ThermoWood® products remain significantly drier than unmodified timber. In warm and humid climates, it is recommended to surface treat against humidity, erosion, and UV radiation. In conclusion, Thermo-D ThermoWood® survives even the most extreme weather conditions.

 

LDCwood® products are all Thermo-D, the most durable ThermoWood® with resistance to decay and weather.

Durability Class(EN 350-1)Use Class (EN335-1)Examples of applicationsProducts
1 Very durableOutdoors, Exposed to weather

Outdoor cladding
Garden structures

Thermo-D ayous, pine
2 Durable3 Outdoors, exposed to weatherOutdoor cladding
Garden structures
Thermo-D spruce
Thermo-D ash, ayous, fraké
3 Moderately durable2 Outdoors, under roofSauna structures
Outdoor structures and furniture
under roof
Thermo-S pine, spruce
Thermo-S hardwood
Thermo-D hardwood
4 Less durable1 Indoors in dry conditionInterior cladding