Thermally Modified Wood
Various (typically Pine, Ash, Poplar) • North America, Europe
Modified Wood
$$
Thermally modified wood is treated with high heat (400°F+) to permanently alter its cellular structure, creating exceptional stability and durability without chemicals.
Janka Hardness
Varies by species
Density
Varies (typically 10-15% lighter than untreated)
Moisture
4-6%
Fire Rating
Class B
Durability
Class A - 20+ years
Price Range
$$
Appearance
Rich brown (varies by species)
Key Characteristics
- •Chemical-free treatment
- •Enhanced dimensional stability
- •Improved decay resistance
- •Reduced moisture absorption
- •Consistent color throughout
- •Eco-friendly process
Common Applications
- •Decking
- •Siding and cladding
- •Outdoor furniture
- •Sauna and spa
- •Interior paneling
- •Architectural features
Maintenance Requirements
Low maintenance. Oil annually to maintain color, or allow to weather naturally. No toxic chemicals to worry about.
Advantages
- No chemical treatment
- Excellent stability
- Enhanced durability
- Eco-friendly
- Consistent appearance
- Good value
Considerations
- More brittle than untreated
- Can be more expensive than PT
- Limited species availability
- Requires careful handling
- May need special fasteners