1. Product Description
Thermowood Iroko is a high-strength and environmentally friendly wood material produced by modifying Iroko (Chlorophora excelsa), originating from West Africa, through a special heat and steam treatment. Through this steam treatment applied between 180–212°C, the chemical structure of the wood changes and internal substances are removed. As a result, a completely natural thermally modified Iroko material is obtained without using any chemicals.
2. General Properties
| Property | Description |
|---|---|
| Wood Name | Iroko |
| Botanical Name | Chlorophora excelsa |
| Origin | West, Central and East Africa |
| Processing Type | Thermal Modification |
| Processing Temperature | 180–212°C |
| Density (before/after) | 660–690 → 550–650 kg/m³ |
| Color (before/after) | Light amber → Caramel – dark golden tones |
| Moisture Content (after) | 4% – 7% |
| Thermal Conductivity (λ) | 0.099 W/m·K |
| Durability Class | Class 1 (very durable) |
| Modulus of Elasticity (MOE) | 10,420 – 13,550 N/mm² |
| Bending Strength (MOR) | 55 – 60 N/mm² |
| Hardness (Brinell) | ~40 N/mm² |
3. Advantages of Thermal Modification
- 100% natural and chemical-free
- Water absorption rate decreases, wood becomes stable
- Cracking, warping and twisting reduced by up to 90%
- Color becomes homogeneous and surface aesthetics improve
- Natural resistance against fungi, insects and termites
- Improved insulation performance, enhanced sound and heat resistance
- Environmentally friendly, FSC sourced and low carbon footprint
4. Physical Properties
| Property | Value |
|---|---|
| Moisture Content | 4% – 7% |
| Dimensional Stability | Very high |
| Radial Shrinkage | ~2% – 3% |
| Tangential Shrinkage | ~4% – 5.2% |
| Volumetric Shrinkage | ~11% |
| Thermal Expansion | Low |
| Thermal Conductivity | 0.099 W/m·K |
5. Application Areas
Outdoor Applications
- Facade cladding
- Deck flooring
- Pergola and veranda structures
- Garden furniture
- Ship decks
Indoor Applications
- Flooring
- Stair treads
- Furniture and panel production
- Decorative joinery
6. Workability and Installation
- Easily workable, can be cut with standard carpentry tools
- Stainless steel screws and fasteners are recommended
- Provides strong bonding with MUF and polyurethane adhesives
- Compatible with oil-based and water-based surface protectors
- Suitable for finger-joint, laminated and solid profiles
7. Maintenance and Storage
- Regular oil maintenance is recommended for outdoor use
- May naturally turn grey over time — this is a natural aging process
- Should be stored in cool, dry areas away from direct sunlight
8. Environmental Impact and Sustainability
- Chemical-free – 100% natural
- Recyclable and biodegradable
- Processed with low energy consumption
- Can be sourced from FSC-certified sustainable forests
- Low carbon footprint
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