In addition to untreated wood, we manufacture products for indoor and outdoor use from thermally modified wood. Thermal modification, also known as heat treatment, improves the wood’s resistance to decay and weather conditions, its thermal insulation capacity, as well as its dimensional stability in conditions with fluctuating moisture levels.
Thermally modified wood is darker in color than untreated wood, which gives it a fine hardwood look. This factor alone is often reason enough to choose thermo wood.
Individual solutions to fulfil your wishes
Karava has long, solid expertise in wood modification by heat treatment. Our production technique is patented, and we supply thermally modified wood to large companies in the wood industry, for instance.
In addition to our production technique, our high quality is built on having control of the entire production chain. We select the wood from our trusted partners and perform the thermal modification at our own heat treatment facility in Mänttä-Vilppula. The actual products are then manufactured by using the latest machinery at our factory in Pirkkala.
Karava is authorized to use the ThermoWood® trademark
ThermoWood is a trademark registered by the Finnish ThermoWood Association. It may only be used by the members of the association, as well as partners cooperating with the association on matters such as quality control and research. The ThermoWood product classification consists of two classes with different end use applications: Thermo-S and Thermo-D.
Properties of thermally modified wood
- Improved resistance to decay
- Reduced thermal conductivity
- Resin removed
- Reduced splitting strength
- Slightly reduced bending strength Improved dimensional stability
- Consistent coloring throughout the wood
- Reduced equilibrium moisture content
Heat-treated Thermo-S; applications
The letter ‘S’ in the name stands for stability. Along with appearance, it is indeed a key feature of the end use applications of this product class.
- Thermo-S Softwood
- Building components
- Furnishings in dry conditions
- Fixtures in dry conditions
- Furniture
- Garden furniture
- Sauna benches
- Door and window components
Thermo-S Hardwood
- Furnishings
- Fixtures
- Furniture
- Flooring
- Sauna structures
- Garden furniture
Heat-treated Thermo-D; applications
The letter ‘D’ in the name stands for durability. Along with appearance, it is indeed a key feature of the end use applications of this product class.
Thermo-D Softwood
- Exterior cladding
- External doors
- Window shutters
- Open space constructions
- Sauna and bathroom furnishings
- Flooring
- Garden furniture
Thermo-D Hardwood
- Darker color compared to Thermo-
- Furnishings
- Fixtures
- Furniture
- Flooring
- Sauna structures
- Garden furniture
If a darker color is desired, Thermo-D should be used.
Standard dimensions
In addition to our standard dimensions, we can also follow individual specifications.
Thermo ash
21×42 21×65 21×92 21×118 21×130
26×42 26×65 26×92 26×118 26×130
Thermo pine
15×92 17×118 17×142
21×92 21×118 21×142
26×92 26×118 26×142
42×92 42×118 42×142
Thermo aspen
15×70 15×90 15×120 15×140 17×190
28×40 28×90 28×120 28×140
Lengths:
Thermo aspen 1,8m to 3m
Thermo ash 1,8m to 3m
Thermo pine 3m to 4,2m
Available in many different profiles.