--- title: Thermally Modified Wood | Arbor Wood description: Discover Arbor Wood Thermowood, a sustainable, durable siding and decking that enhances natural beauty. Minimize maintenance and environmental impact. image: https://www.mataverdedecking.com/hubfs/Arbor%20Wood%20thermally%20modified%20Ash%20decking%20on%20back%20porch.jpg --- - [Pinterest ](https://www.youtube.com/user/mataverde1) - [Facebook ](https://www.facebook.com) ![Arbor Wood thermally modified Ash decking and soffits](https://www.mataverdedecking.com/hs-fs/hubfs/Arbor%20Wood%20thermally%20modified%20Ash%20decking%20and%20soffits.jpg?width=800&height=533&name=Arbor%20Wood%20thermally%20modified%20Ash%20decking%20and%20soffits.jpg) # Arbor Wood Thermowood Thermally Modified Wood  ![Mataverde + TMW thermally modified wood webpage banner logo](https://www.mataverdedecking.com/hs-fs/hubfs/Mataverde%20+%20TMW%20thermally%20modified%20wood%20webpage%20banner%20logo.jpg?width=800&height=150&name=Mataverde%20+%20TMW%20thermally%20modified%20wood%20webpage%20banner%20logo.jpg) ## **![Arbor Wood white and gold thermowood logo on black 600x300](https://www.mataverdedecking.com/hs-fs/hubfs/Arbor%20Wood%20white%20and%20gold%20thermowood%20logo%20on%20black%20600x300.jpg?width=600&height=300&name=Arbor%20Wood%20white%20and%20gold%20thermowood%20logo%20on%20black%20600x300.jpg)** **[Go Directly to Arbor Wood Siding Page](https://www.mataverdedecking.com/thermally-modified-wood-cladding-arbor-wood)          [Go Directly to Arbor Wood Decking Page](https://www.mataverdedecking.com/thermally-modified-wood-decking)**   ## **ARBOR WOOD THERMOWOOD IS THE PERFORMANCE DRIVEN CHOICE** Arbor Wood Co. manufactures Thermowood® thermally modified wood for a wide range of interior and exterior uses, including cladding, decking, soffits, fencing, and dimensional lumber. The Thermowood process is completely chemical-free, using only heat and steam to create a high-performance wood material while preserving the natural beauty and character of real wood. ![Mataverde+ Arbor Wood Ash thermally modified wood siding at an environmental Center in Michigan, a modern façade with significant design features.](https://www.mataverdedecking.com/hs-fs/hubfs/Arbor%20Wood%20thermally%20modified%20Ash%20siding%20at%20environmental%20Center%20in%20Michigan.jpg?width=800&height=530&name=Arbor%20Wood%20thermally%20modified%20Ash%20siding%20at%20environmental%20Center%20in%20Michigan.jpg) ### Sustainability Arbor Wood believes building materials should sustain our lives, our communities, and our planet. That is why they are committed to an ongoing sustainability strategy focused on creating positive impact on our industry as well as our planet. Arbor Wood puts this commitment into action by sourcing wood from responsibly managed American forests, using advanced thermal modification technology, finding productive uses for all byproducts (including waste), partnering with leading sustainability organizations, and supporting 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 and siding. Because it absorbs less water, it is far less likely to expand, contract, rot, or decay. This process allows native wood species that are not usually suitable for exterior use to meet or exceed performance standards, with a beautiful appearance and long service life.   --- ## Arbor Wood Siding Arbor Wood offers thermally modified American White Ash, Poplar and Southern Yellow Pine cladding in a variety of architectural finish options including oiled, shou sugi ban and brushed appearance. ![Mataverde+ Arbor Wood Thermally Modified Ash Siding](https://www.mataverdedecking.com/hs-fs/hubfs/Arbor%20Wood%20thermally%20modified%20Ash%20siding.jpg?width=800&height=544&name=Arbor%20Wood%20thermally%20modified%20Ash%20siding.jpg) [VISIT ARBOR WOOD SIDING PAGE FOR MORE INFORMATION](https://www.mataverdedecking.com/thermally-modified-wood-cladding-arbor-wood) [VISIT THERMALLY MODIFIED WOOD SIDING GALLERY FOR REAL PROJECT PICTURES](https://www.mataverdedecking.com/mataverde-thermally-modified-wood-siding-gallery) [![Request a Thermally Modified Wood Siding Sample Now](https://no-cache.hubspot.com/cta/default/112655/interactive-177420491113.png) ](https://www.mataverdedecking.com/hs/cta/wi/redirect?encryptedPayload=AVxigLJ4q5Sa5Ht4DcFHfxI03T7hi06V1PMlLyHwJ6I%2FHwpsuIStS1rQud8UvPf4LX4pcUI7A%2BC2NqwAjtDo9PiNddj%2Ft1ARM3GEPjEGO%2BZJ4FLtxJtXAsEgzXrXagk9A%2FMjVHaG6%2FI0c%2F4pVtAYVmzf1ibKOYm%2FO%2BT3Z0spu5hbddM5ARH%2FKGcRkAfawaOhi2AnQyi3SHwS3LkIvAGjMb9Tfw%3D%3D&webInteractiveContentId=177420491113&portalId=112655) [![Request a Thermally Modified Wood T&G Siding Quote Today](https://no-cache.hubspot.com/cta/default/112655/interactive-158334226260.png) ](https://www.mataverdedecking.com/hs/cta/wi/redirect?encryptedPayload=AVxigLLMieUoEio0M9uhl5T29emBUOWHsF7u7FtMZxCmpa5Z%2BKiHd4nCERS6WauUs4dTsJ5A5EXRLCLUEBdKSgnRIgvma4nbVl%2B2uiJnZfFgcwTE597SST9BFP%2BFosUNAjdnN%2BRPYSNRF8kHIJr4dmLQMa77Wvka5eJGyodDKlo%2B60VrtvqZouUD7Y6%2FRYlr8EWeuUstct5L14bEzmsAFmIVklxTohU%3D&webInteractiveContentId=158334226260&portalId=112655)   --- ## Arbor Wood Decking Arbor Wood offers thermally modified American White Ash and Southern Yellow Pine decking options. ![Mataverde+ Arbor Wood thermally modified Ash decking at lakefront residence](https://www.mataverdedecking.com/hs-fs/hubfs/Arbor%20Wood%20thermally%20modified%20Ash%20decking%20at%20lakefront%20retreat.jpg?width=800&height=533&name=Arbor%20Wood%20thermally%20modified%20Ash%20decking%20at%20lakefront%20retreat.jpg) [VISIT ARBOR WOOD DECKING PAGE FOR MORE INFORMATION](https://www.mataverdedecking.com/thermally-modified-wood-decking) [VISIT THERMALLY MODIFIED WOOD DECKING GALLERY FOR REAL PROJECT PICTURES](https://www.mataverdedecking.com/thermally-modified-wood-decking-gallery) [REQUEST THERMALLY MODIFIED WOOD DECKING SAMPLES HERE](https://www.mataverdedecking.com/where-to-buy/request-decking-quote) [![REQUEST A DECKING QUOTE HERE](https://no-cache.hubspot.com/cta/default/112655/interactive-158334226263.png) ](https://www.mataverdedecking.com/hs/cta/wi/redirect?encryptedPayload=AVxigLL%2B5l%2BEdlE607jOiYcJolMh8tMiSEdUxpp6%2FKTfCT0okqBi54tWVJCzNjm4%2FTjzX%2BV5WK0pTlWxzHOfpgKhp4x8%2Bk5FEXmZcg4rBSaUWItQzcuJ5FGjlSbl7ZexAk0xVnOuuYFDBejH7WRjb6v2I7XVOlx6awDZKIkfVsLNwOK8L4QYb0jaEvw0ylZe2dyoKnUWsXmFQVMI%2ByeyQqG%2BWfxp1YdW5iU%3D&webInteractiveContentId=158334226263&portalId=112655)   --- ## **Arbor Wood Dimensional Lumber** 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.  ![Arbor Wood Dimensional Lumber](https://www.mataverdedecking.com/hs-fs/hubfs/Arbor%20Wood%20Dimensional%20Lumber.jpg?width=600&height=585&name=Arbor%20Wood%20Dimensional%20Lumber.jpg) [VISIT ARBOR WOOD DIMENSIONAL LUMBER PAGE FOR MORE INFORMATION](https://www.mataverdedecking.com/thermally-modified-wood-arbor-wood-lumber)   ### **Arbor Wood thermally modified wood products:** - **Locally and sustainably harvested from American forests** White Ash, Poplar, and Southern Yellow Pine are carefully sourced from responsibly managed American forests, helping to protect the landscapes we all depend on while delivering an exceptionally low carbon footprint. - **Enhanced durability** The Thermowood process changes the wood at the cellular level, increasing its resistance to rot, decay, and insects—much like tropical hardwoods. It is non-toxic and will not leach. - **Improved dimensional stability** The process makes the wood highly resistant to water and moisture from severe weather, storms and humid air, greatly reducing the risk of warping or cupping and improving its resistance to expansion and contraction. - **Non-toxic and chemical-free** No preservatives are used in the thermal modification process, the treatment relies solely on heat and steam and a proven production process. - **Richer color and appealing aesthetics** The process gently darkens the wood, creating a warm, rich tone with a more consistent, uniform appearance. - **Low maintenance** Arbor Wood thermally modified siding can be allowed to weather to a natural silver-gray or maintained with exterior oil to preserve its original color. In either case, applying an oil finish during the first season is recommended for best performance. --- Get a copy of the Ultimate Guide to Wood Rainscreen Siding for technical resources and more inspiration [![Go Here to Download the Ultimate Guide to Wood Rainscreen Siding](https://no-cache.hubspot.com/cta/default/112655/interactive-162954860610.png) ](https://www.mataverdedecking.com/hs/cta/wi/redirect?encryptedPayload=AVxigLLOzWTNJWPHL1OTt0hQytcB32c2k9XknsdniqOiUZdUG5jPG2oBeQG%2BVU6beZAnzxw35hxTbk8fwB8Oro1eoak%2FWbXAXuh49JDN1aUmtNZ76rO3k%2BYc%2F6BEFaoLkMPKsskQ5oxZszp9pEjrtzEuol7z%2BCIdyKCBPrbhN2DZN0oAlcnql4nnNx1h6PhoNlLw1oKs8Thl%2BD83XxoNXE93S66SCds%3D&webInteractiveContentId=162954860610&portalId=112655)   | [![Arbor Wood Catalog](https://www.mataverdedecking.com/hs-fs/hubfs/Arbor%20Wood%20Catalog.jpg?width=235&height=305&name=Arbor%20Wood%20Catalog.jpg)](https://www.mataverdedecking.com/hubfs/Arbor%20WoodCo_Brochure_2025.03.pdf) [DOWNLOAD THE 2026 ARBORWOOD PRODUCT CATALOG HERE](https://www.mataverdedecking.com/hubfs/Arbor%20WoodCo_Brochure_2025.03.pdf) | [![Arbor Wood Care and Maintenance Guide-1](https://www.mataverdedecking.com/hs-fs/hubfs/Arbor%20Wood%20Care%20and%20Maintenance%20Guide-1.jpg?width=234&height=304&name=Arbor%20Wood%20Care%20and%20Maintenance%20Guide-1.jpg)](https://www.mataverdedecking.com/hubfs/ArborWoodCo_2023_Care%26MaintenanceGuide.pdf) [DOWNLOAD ARBOR WOOD CARE AND MAINTENANCE GUIDE HERE](https://www.mataverdedecking.com/hubfs/ArborWoodCo_2023_Care%26MaintenanceGuide.pdf)  | | --- | --- | --- Do you have questions we can help with? 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