Thermally Modified Wood

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25 products available to order online.

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What is thermally modified wood?

Thermally modified wood (TMW) is wood that has been heat-treated at high temperatures (typically between 320-428°F,160–220°C) in a low-oxygen environment to improve its durability, stability, and resistance to decay, without using chemicals.

Property	Effect
Dimensional Stability	Improved; less swelling/shrinkage with humidity
Durability	Enhanced resistance to rot, fungi, and insects
Moisture Absorption	Greatly reduced
Color	Darker, richer (like tropical wood)
Mechanical Strength	Slightly reduced (can be more brittle)
Non-toxic	Chemical-free and environmentally safe

Who It’s Ideal For?

If you want an ecofriendly, cedar-alternative wood that offers aesthetic warmth, long-term stability, and durability —this is the wood choice for you! Ideal for exterior accents, cladding, trims, and indoor finishes. It’s especially suited for projects where movement and maintenance are concerned.

Ambara

Ambara is a thermally modified hardwood derived from Ayous, a tropical wood native to West and Central Africa. The thermal treatment transforms pale yellow Ayous into a rich caramelbrown, while enhancing its stability and durability for exterior use

Korina

Korina wood, also known as Frank, is a beautiful tropical hardwood known for its fine texture and striking appearance. Thermally modified making it a stable wood choice for exterior use. It’s prized for its combination of strength, lightness, and aesthetic appeal. A great choice for decking material.

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Thermally Modified Korina 5/4x6 Deck Board

Thermally Modified Korina 5/4x6 Grooved Deck Board

Ambara Ayous 1/2x6 Bevel Siding

Ambara Ayous 1/2x8 Bevel Siding

Ambara Ayous 3/4x10 Bevel Siding

Ambara Ayous 3/4x12 Bevel Siding

Ambara Ayous 1x4 S4S

Ambara Ayous 1x4 T&G EV Flush Back

What is thermally modified wood?

Who It’s Ideal For?

Ambara

Korina