Arbor Wood Co. is the new and innovative choice in modified wood applications.

Produced from the abundant North Central forests of the USA, Arbor Wood Co. (AWCo) offers innovative thermally modified timber for a variety of outdoor and indoor applications from housing installations to decorative fixtures and product components. AWCo Thermally Modified Timber (TMT) joins together regionally harvested wood, a value added heat modification process, and local Minnesota milling to bring finished TMT goods to a variety of markets and uses.

Arbor Wood Co. Thermally Modified Timber is FSC Certified
Forest Stewardship Council
Click to view certificate (pdf)

Thermal Modification is a process that replaces the use of chemicals to enhance an inapt wood species performance with heat and steam so it is suitable for a multitude of applications indoors and out. The high heat modifies the cell structure of the wood and makes it highly resistant to rot while greatly reducing expansion and contraction. Through multiple cook temperatures a range of color options within a single species can be achieved without the use of stains. Aesthetically the wood is darkened in color and it brings an unexpected tropical look to more commonly lighter indigenous wood species. Since Thermally Modified wood does not absorb or hold moisture as it would prior to treatment, species that typically do not perform well in outdoor or wet environments can now be used as decking or siding.

 
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ABOUT AWCo

AWCo

AWCo works with the client to find the correct species and thermal modification temperature ideal for the look and performance for their project. The process begins with procuring raw material from sustainably certified regional sources. The wood is then rough milled and kiln dried to consistent moisture content. The next step is to thermally modify the timber which enhances the performance and gives the native species an exotic, darker look. Finally, the material is milled to specification per the requirements of the project.

Timber Thermal Modification Process

Harvest &
Rough Cut

AWCo Sources raw material from regional sources and accepts only select or better lumber to be thermally modified. Commitment to quality in this stage is necessary for a successful finished product. Sustainability of our resources is a primary philosophy at AWCo and working with public, private and third party certifiers to ensure responsible lumber is a process that goes into every piece of material harvested.

Modify

Once your wood has been harvested and rough cut it is kiln dried to a uniform moisture content. It is then introduced to the thermal modification process where the wood is subjected to high heat and steam in a controlled environment. Thermal modification will change the woods overall appearance and attributes to broaden the performance range functionally and aesthetically for many wood species.

Mill

The TMT (Thermally Modified Timber) raw stock is then processed by local mill workers to the desired specification. Common mill forms are siding, decking and flooring.

 

YOU

AWCo offers siding, decking and flooring in several species and aesthetics. We work with you to find the correct product. If there are specific requirements of profiles, color, or species, AWCo can customize the process to fit your project. The key to this hands-on approach is communication with the client, domestic harvesting of the wood and local milling to ensure the same quality is applied to custom jobs.

Thermally Modified Timber Uses

DeckingDecking

AWCo has an offering of decking profiles that highlight different species that can be modified at higher or lower temperatures to add to their color pallet. Hidden fastener profiles available.

SidingSiding

AWCo Siding uses wood species form North Central USA that have been modified to be outdoor ready. A new look and performance standard to the exterior wood siding market.

FlooringFlooring

AWCo provides exceptional exterior grade products, though we also love the indoors. AWCo can provide custom interior flooring applications. The modification brings a rich new look to native woods, and high performance levels for residential and commercial flooring.

 
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About Thermally Modified Timber

Thermally modified timber goes through a 3-stage kiln process using high temperature and taking from 24-72 hours to complete a full cycle. During the high temperature phase, the wood is protected from combustion by using steam. In that time, the moisture of the wood is almost completely removed and added back to a precise amount. The natural acids and sugars are modified from the extreme heat which changes the physical structure of the wood. The wood’s ability to absorb moisture is declined making it less prone to rot and decay. The equilibrium moisture content (EMC) of the wood decreases. This means the swelling and shrinking of the wood material due to moisture variations can be reduced by up to 60% as compared to unmodified wood. The most apparent change is that the wood darkens throughout, giving domestic wood the look of desirable imported wood.

3

Three
Phases

The 3-phase process uses only heat and water to change a wood species ability to withstand the elements, making it one of the most natural, chemical free ways to extend the life of wood products.

Thermally Modified Timber Phases

Phase 1: Temperature Increase

The temperature in the kiln is raised rapidly to around 212°F, affecting the natural composition of the wood. Steam is introduced to prevent the wood from checking in the high heat. The moisture content of the wood is reduced from 15-20% down to nearly zero.

Phase 2: Thermal Modification

The temperature goes even higher to reach target color levels, around 415°F. The higher and longer the heat, the darker the wood becomes throughout. Steam is used to prevent the wood from burning in the high temperatures.

Phase 3: Cooling & Re-Conditioning

The temperature is reduced by spraying water onto the wood and cooling. Conditioning and re-moistening take place to bring the wood moisture content around 4-6%

Thermally
Modified Timber
Color Change

The color of wood will darken in the thermal modification process. The wood is darkened throughout so any sanding or refinishing will bring the wood back to the original color without staining. The color change of the thermally modified wood is especially useful in the flooring industry since it can be used to emulate tropical wood species.

Thermally Modified Timber Color Change
 
 
Sustainability

AWCo is based in Duluth, Minnesota and works with North Central USA suppliers to bring you uncompromised quality in harvest, modification, and millwork. The raw goods harvested for AWCo products come from sustainably managed forests. Minnesota Department of Natural Resources has been recognized as a leader for forest stewardship by FSC and SFI third party certification bodies as the largest single forest management certificate in the nation. AWCo and its partners are aligned geographically and philosophically with the goals of responsible resource management. The heat and steam process used to modify the wood creates a value added product without the use of chemicals.

  • DOMESTIC: AWCo thermally modified timber is domestically grown, harvested, kilned, milled and sold in North America.
  • CHEMICAL FREE: Thermally modified wood attains superior exterior qualities without the use of toxic chemicals.
 
Stability

After wood has been thermally modified its properties are more stable than standard kiln dried wood. The swelling and shrinking of wood due to moisture variations can be reduced by up to 60%. After the modification process, the physical structure of the wood is changed permanently. Because of these changes in the structure of the wood, its ability to absorb moisture from the surrounding environment greatly declines, making it more durable than untreated wood against biological damages such as decay caused by brown rot and fungus. Like unmodified wood, uncoated thermally modified wood will turn a grey weathered color over a period of time when exposed to direct sunlight. To attain the best biological durability, thermally modified wood should be surface coated.

 
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Stock Products

Thermally Modified Timber Products

Arbor Wood Co. siding focuses on wood species from the North Central USA. This highlights the TMT process by bringing a wood you do not see in outdoor products and modifying the structure to make them less prone to water absorption, expansion/contraction and rot. The wood color is darkened by the modification process and is offered in a lighter or darker through color option. This is done by processing the wood at different temperatures.

 
Ash

Profiles offered are hidden fastener. Please inquire about custom profiles and species. Finishing or sealers recommended.

Siding
 
 
Ash 212
Ash 190
 
Basswood

Profiles offered are hidden fastener. Please inquire about custom profiles and species. Finishing or sealers recommended.

Siding
 
 
Basswood 212
Basswood 190
 
Thermally Modified Timber Decking

Arbor Wood Co. decking focuses on wood species from the North Central USA. This highlights the TMT process by bringing a wood you do not see in outdoor products and modifying the structure to make them less prone to water absorption, expansion/contraction and rot. The wood color is darkened by the modification process and is offered in a lighter or darker through color option. This is done by processing the wood at different temperatures.

 
Ash

Profiles offered are hidden fastener. Please inquire about custom profiles and species. Finishing or sealers recommended.

Decking
 
 
Ash 212
Ash 190
 
Red Oak

Profiles offered are hidden fastener. Please inquire about custom profiles and species. Finishing or sealers recommended.

Red Oak
 
 
Red Oak 212
Red Oak 190
 
Thermally Modified Timber Flooring

Arbor Wood Co. brings the features and benefits of the TMT process indoors as a flooring. A darker, through-color look is offered in a variety of species. This gives native species and exotic look with enhanced expansion/contraction performance and durability.

 
Ash

Profiles offered are hidden fastener. Please inquire about custom profiles and species. Finishing or sealers recommended.

Siding
 
 
Ash 212
Ash 190
 
Red Oak

Profiles offered are hidden fastener. Please inquire about custom profiles and species. Finishing or sealers recommended.

Thermally Modified Red Oak Timber Flooring
 
 
Red Oak 212
Red Oak 190
 
 
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CONTACT AWCo


Click on the link below to contact us, and we'll get back to you within one business day.


Address


1325 59th Avenue West
Duluth, MN 55807
Phone: (877) 970-7877


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