Thermowood®
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What is Thermowood?
ThermoWood is a premium thermally modified lumber designed to withstand rot, fungi, and harsh outdoor conditions — backed by a 20-year warranty. Through a carefully controlled heat-treatment process, the wood’s natural properties are enhanced, making it more durable, dimensionally stable, and resistant to biological decay.
What Makes Original Thermowood® So Unique Compared to Other Wood Treatments?
| Thermowood® Ayous | Autoclave Wood | Kiln-Dried Wood | Other thermo modification | |
|---|---|---|---|---|
| Treatment Process | Patented process of thermal modification, standardized and audited | Treated using alternative methods - varying for each factory | Simple heat treatment to reduce moisture content | Thermal modification, varying for each factory |
| Wood moisture | 4-6% | 15-20% | 8-12% | 4-8% |
| Lifespan | 20+ years | 15-20 years | 10-20 years | 15 - 20 years |
| Biological Resistance | High (resistant to fungi, mold and thermite) | High | Moderate to high | High |
| Thermal stability | High (good insulator) | Moderate | Moderate | High |
| Weather Resistance | Excellent | Excellent | Good | Varies (generally good) |
| Dimensional Stability | High | High | Moderate to high | Varies (generally high) |
| Maintenance | Low | Moderate | Moderate | Varies |
| Environmental Impact | Low (chemical-free) | Higher (chemicals used) | Moderate | Low (if chemical-free) |
| Sustainability | Always FSC certificated | Depends on sourcing | Depends on sourcing | Depends on sourcing |
Ash
Thermowood® Ash undergoes a high-temperature treatment process that enhances its durability, stability, and resistance to decay, making it an excellent option for projects that demand wood with superior performance attributes.
Price
Life
Span
20+ year
Sustainably
Sourced
100%
Custom
Milling
Yes
Scandinavian Thermowood®
Scandinavian Thermowood® is a cost-effective thermally modified wood that comes in a light tan color with a knotty texture. It’s an excellent choice for areas with high moisture as it’s resistant to rot and decay.
Price
Life
Span
20+ year
Sustainably
Sourced
100%
Custom
Milling
Yes
Thermowood® Ayous
Thermowood® Ayous is a hardwood that undergoes a special thermal modification process, which enhances its natural durability and stability.
Price
Life
Span
20+ year
Sustainably
Sourced
100%
Custom
Milling
Yes
Thermowood® Clear Radiata
Thermowood® Clear Radiata undergoes a specialized thermal modification process for enhanced durability, stability, and weather resistance. What sets it apart is OPX®—an advanced anti-termite shield that defends against rot and pests. Lightweight yet strong, it’s a versatile choice for sleek, dimensionally stable projects.
Price
Life
Span
20+ year
Sustainably
Sourced
100%
Custom
Milling
Yes
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