Innovators inthermally modified wood.
Chemical-free. Built to last. Northern Heat.
From our headquarters in Bathurst, New Brunswick, ThermalWood Canada supplies residential and commercial markets, as well as the door, furniture, and music industries with high-quality thermally treated wood. Our specialized thermal modification process fully realizes the potential of diverse wood species — with a dedication to excellence that has established us as a leader in the field.
Transforming wood.
Raising the standard.
ThermalWood Canada was built on a simple premise — North American hardwoods are remarkable materials, but they haven’t been given the chance to reach their full potential. The thermal modification process changes that. By subjecting lumber to carefully controlled high temperatures, we permanently alter its molecular structure, enhancing its durability, stability, and resistance to moisture, insects, and decay.
We follow the parameters set by the International ThermoWood Association — the global body that ensures consistent, reliable results across every batch we produce. With years of expertise in hardwoods, ThermalWood Canada consistently delivers products that surpass industry standards.
“We don’t just supply wood. We transform it — and in doing so, we open up markets that traditional wood simply couldn’t serve.”
Beyond our core thermal modification expertise, ThermalWood Canada collaborates with a network of suppliers dedicated to providing top-quality specialty lumber. Our access to species like birdseye maple, curly maple, white ash, oak, and Brazilian mahogany gives customers a wide range of options for virtually any application.
Explore Our TechnologySpecialized Kilns
Equipped with specially designed kilns, we subject wood to precise temperature-controlled conditions. Our large 30m³ kiln handles commercial volumes, while our 3m³ specialty kiln is reserved for unique species and smaller runs — both delivering the same standard of modification.
European Technology
We use European thermal modification technology — the ThermoWood® process developed by Finland’s VTT Technical Research Centre — combined with our own species-specific expertise built up over nearly two decades in Bathurst.
Hardwood Specialists
While many thermal modification producers focus on softwoods, ThermalWood Canada specializes in hardwoods — opening up species like ash, maple, and oak to exterior applications where they were previously unable to perform.
Fully Customizable
Every project is different. We offer custom dimensions, species selection, and modification levels — working directly with architects, builders, luthiers, and makers to deliver exactly what the project demands.
AIA Certified Sessions
ThermalWood Canada offers AIA certified technical sessions for architects — providing in-depth information on the process, performance data, and specification guidance for thermally modified wood in building applications.
Heat. Steam.
Permanent change.
The ThermoWood® process permanently alters wood at a molecular level — no chemicals, no preservatives. The resulting properties remain even after the wood is sawn, planed, or profiled. Our team has developed species-specific recipes refined over nearly two decades to ensure ideal results for every species we process.
Full Technology DetailsHigh-Temp Drying
Lumber is stacked with 2-inch gaps so heat and steam circulate evenly. Moisture is drawn down to zero, preparing the wood for modification.
100–212°CThermal Modification
Sustained high heat permanently alters the wood’s sugars — making them indigestible to insects and mold. The wood becomes hydrophobic throughout its full depth.
200–250°CCooling
Water-spray cooling reduces kiln temperature while steam conditioning raises moisture content to 4–7%, restoring machinability.
Cooling phaseFinal MC: 4–7%
The modification is permanent. The wood is ready for profiling, finishing, and installation — with its enhanced properties locked in for life.
Ready to shipFive markets.
One process.
Residential & Commercial Building
Decking, siding, cladding, and structural applications. Thermally modified hardwoods perform in climates and applications that conventional wood cannot — from Canadian Maritime winters to Caribbean coastal humidity.
Lutherie & Instrument Making
Guitar blanks, drum components, wooden flutes, and Obsidian Ebony — the real-wood ebony alternative trusted by luthiers and manufacturers worldwide including Fender and Martin. Chemical-free, CITES-unrestricted.
Furniture, Millwork & Doors
Dimensionally stable and moisture-resistant, thermally modified hardwood is ideal for furniture, cabinetry, and door manufacturing — particularly for applications requiring long-term stability in variable humidity conditions.
Hobby Corner & Custom
Chess boards, charcuterie boards, hobby wood packs, and fully custom items. Our Hobby Corner brings thermally modified wood directly to makers, artists, and wood enthusiasts — with new additions every week.
Specialty Species & Custom Runs
Birdseye maple, curly maple, white ash, oak, Brazilian mahogany, and more. Our network of specialty lumber suppliers and custom kiln capability mean we can source and modify almost any species for any application.
Global Distribution
Distributed across Canada through partners in Alberta and British Columbia, and internationally to the United States, Europe, and the Caribbean. Built in Bathurst. Shipped to wherever your project is.
See what we
do in action
The best way to understand thermal modification is to see it. This overview video walks through what ThermalWood Canada does, how the process works, and what makes our products different from anything else on the market.
Covering everything from kiln operation to finished product applications — decking, siding, music components, and more.
Full Technology DetailsThings you might not know
about thermally modified wood
ThermalWood Canada offers AIA certified technical sessions for architects. We put together this four-part series so anyone can learn everything about the process — not just architects.
What is Thermally Modified Wood?
An introduction to the thermal modification process — what it is, how it works, and why it produces a fundamentally different material than untreated wood.
Performance & Durability
How thermally modified wood performs in real-world conditions — moisture resistance, dimensional stability, biological durability, and long-term performance data.
Applications & Specification
Where and how to specify thermally modified wood — decking, siding, cladding, and beyond. Guidance for architects, builders, and specifiers.
Finishing & Maintenance
Surface treatment options, finish application, and long-term maintenance guidance for thermally modified wood in exterior and interior applications.
Certified by the
world’s authority.
ThermalWood Canada is a proud certified member of the International ThermoWood Association — the global body that sets and audits quality standards for thermally modified wood production worldwide.
ITWA certification means every batch we produce is verified against the most stringent international standards. It’s the assurance that what you’re specifying is genuinely what we say it is — not just our word, but a verified, audited quality standard.
The ThermoWood® Handbook 2025 — published by the ITWA — is the definitive technical reference for architects and specifiers. Download it free from our website.
Download the HandbookReady to elevate your project?
Tell us about what you’re building. Big or small, we want to bring it to life.
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