Arbor Wood thermally modified Ash decking and soffits

Arbor Wood Thermally Modified Dimensional Lumber

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ARBORWOOD THERMOWOOD IS THE PERFORMANCE DRIVEN CHOICE

Arbor Wood Co. crafts Thermowood® thermally modified wood for a wide range of interior and exterior applications—cladding, decking, soffits, fencing, and dimensional lumber. Using only heat and steam, the Thermowood process is completely chemical-free, transforming real wood into a high-performance material while honoring the warmth, depth, and natural character that make wood so timeless and inviting.

Arbor Wood Dimensional Lumber

Arbor Wood Dimensional Lumber

Arbor Wood offers a versatile range of dimensional lumber profiles in every Thermowood species and finish, so you can carry the same warmth and character through your entire design. Whether you’re crafting architectural millwork, trim, or detailing those thoughtful transitions that bring a project together, the stability and natural beauty of Arbor Wood help every space feel more enduring, more welcoming, and truly complete.

Arbor Wood Thermowood is available in board sizes and dimensional lumber sizes. Arbor Wood nominal dimensional board sizes are available in 1x2, 1x4, 1x6 and 1x8. Arbor Wood dimensional lumber is available in nominal sizes of 2x4, 2x6, 2x8, 2x10, 2x12 and 4x4.

 

 

Sustainability

Arbor Wood believes that building materials should do more than simply perform—they should help sustain our lives, our communities, and our planet. That is why they are committed to a thoughtful, long-term sustainability strategy that aims to create a lasting, positive impact on both our industry and the environment we all share.

This promise is made real every day: Arbor Wood sources wood from responsibly managed American forests, relies on advanced thermal modification technology instead of chemicals, finds productive uses for every byproduct (including waste), partners with leading sustainability organizations, and actively supports local and national reforestation efforts.

 

Unmatched Durability & Natural Beauty

Arbor Wood is a thermally modified, eco-friendly alternative to composite, synthetic, and chemically treated decking, siding and lumber. Because it absorbs significantly less water, it is far less likely to expand, contract, rot, or decay over time. This thoughtful process gives new life to native wood species that are not usually suited for exterior use, helping them meet or exceed performance standards—while offering the warm, natural beauty and long service life that make a space feel cared for, enduring, and truly lived in.

 

 

Arbor Wood thermally modified wood products:

  • Locally and sustainably harvested from American forests
    White Ash, Poplar, and Southern Yellow Pine are thoughtfully selected from responsibly managed American forests, honoring the landscapes we all rely on while providing an exceptionally low carbon footprint.

  • Enhanced durability
    The Thermowood process transforms the wood at the cellular level, greatly increasing its resistance to rot, decay, and insects—delivering durability on par with many tropical hardwoods. This treatment is completely non-toxic and will not leach, so you can design with confidence for the people and places you care about.

  • Improved dimensional stability
    The process makes the wood highly resistant to water and moisture from severe weather, storms, and humid air, so it’s far less likely to warp or cup and is better able to gently adapt to natural expansion and contraction over time.

  • Non-toxic and chemical-free
    No preservatives are used in the thermal modification process—the wood is transformed using only heat, steam, and a carefully controlled, proven production method that keeps it truly natural and safe for the spaces and people you care about.

  • Richer color and appealing aesthetics

    The Thermowood thermal modification process gently darkens the wood, creating a warm, rich tone with a more consistent, uniform appearance.

  • Low maintenance
    Arbor Wood thermally modified siding gives you the freedom to choose the story it tells over time—allow it to gently weather into a soft, silver-gray patina, or maintain its original warmth with a quality exterior oil. Either way, for the best long-term performance and to help your project age gracefully, we recommend applying an oil finish during the first season.

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