Arbor Wood Co. crafts high-performance, thermally modified timber for siding, decking, and millwork. Using only heat and steam on responsibly sourced domestic wood, they create durable, chemical-free materials that preserve the natural beauty of every grain.

What is Thermally Modified Wood?

Thermally modified wood is timber that has been "pressure-cooked" in a specialized, chemical-free kiln. By using only heat and steam, the process permanently alters the wood’s cellular structure to make it more durable, stable, and rot-resistant.

The 3-Phase Transformation

Arbor Wood’s modification occurs in three distinct stages:

Phase 1: Drying

The temperature is gradually raised to reduce the wood's Equilibrium Moisture Content (EMC), preparing the fibers for the high-heat stage.

Phase 2: Modification (The "Magic" Phase)

In an oxygen-deprived environment, a rapid heat spike occurs. This converts the wood’s natural sugars and acids so they are no longer a food source for mold, rot, or fungi. This step also makes the wood hydrophobic (water-resistant) and gives it a deep, exotic-looking dark tone.

Phase 3: Conditioning

Steam is introduced to safely cool the material and bring the moisture levels back to a stable, workable equilibrium.

Thermal modification is one of the most natural, chemical-free ways to extend the life of wood products.


Arbor Wood Co.
Deck Tiles

Introducing Arbor Wood Co Decking Tiles. Crafted using industry-leading Arbor Wood Co Thermally Modified Wood, these tiles blend natural elegance & sustainability, transforming any outdoor space.

Applications

  • Decking

  • Docks

  • Siding

  • Interior flooring

  • Window + Portal trim

  • Stable outdoor signage

  • Doors

  • Bathroom interiors

  • Saunas

Sustainability

  • Chemical free – superior exterior qualities without the use of toxic chemicals

  • Sustainably harvested timber

  • Grown, harvested, kilned, milled and sold in North America

  • Support responsible resource management

Stability

  • More stable than standard kiln dried wood.

  • Up to 60% reduced swelling and shrinking from moisture

  • Water and decay resistant


Species

Note that images of materials below are a close representation of color and texture, but actual product color and texture may vary. Please contact us for material samples.

NATRL - Ash + No Finish

BRNSH - Burned, Brushed + Black Oil

NATRL - Pine + Clear Oil

ELMNT - Brushed + Grey Oil

BRNSH - Burned & Brushed + Brown Oil

ELMNT - Brushed + White Oil

BRNSH - Burned + Black Oil

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Ready to start building with Arbor Wood Co.?