Kebony
Kebony is a modified wood product made for exterior projects that need natural woodbeauty, strong durability, and a lower-maintenance alternative to many traditional outdoor lumber options. At Mason’s Mill, we supply Kebony decking, cladding, related hardware, and samples for architects, builders, remodelers, designers, and homeowners planning high-quality exterior projects.
Why choose Kebony for exterior wood projects?
Kebony gives exterior projects the warmth of natural wood without relying on tropical hardwoods. The product starts with sustainably sourced wood and is modified with a bio-based liquid that becomes permanently bonded inside the wood fibers, creating a stable, hard,and durable material. Kebony states that the result is suitable for exterior applications where durability, environmental credentials, and low maintenance matter.
Kebony is often considered for projects where the design calls for real wood, clean lines, and long service life. It can be used for decking, cladding, flooring, roofing, windows, doors, furniture, and design objects, according to Kebony’s FAQ documentation.
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Thermac Poplar — Cutek Extreme Clear Finish
Thermac Poplar is a thermally modified Appalachian hardwood produced by Bingaman & Son Lumber from native Pennsylvania yellow poplar. Using only heat and steam — no chemicals, plastics, or additives — the wood is heated in a low-oxygen environment to fundamentally alter its cell structure. This process removes the sugars and moisture that fungi and insects need to survive, while permanently reducing the wood's ability to absorb water. The result is a stable, rot-resistant hardwood with a warm, chocolate-brown color that runs consistently through the entire board, not just the surface.
Yellow poplar is particularly well-suited to thermal modification: it's a domestically abundant, fast-growing hardwood that emerges from the process with excellent dimensional stability, a smooth grain, and a rich color that rivals more exotic species. Independent testing on thermally modified yellow poplar has demonstrated Durability Class 1 ("very durable") performance against wood-destroying fungi, placing it in the same durability tier as many tropical hardwoods.
Each board is finished with Cutek Extreme Clear, a penetrating oil that migrates deep into the wood fibers rather than forming a surface film. Cutek's core function is dimensional stabilization — it works from inside the board to slow moisture movement, which is what causes cupping, checking, and end-splitting in exterior wood. Because the finish penetrates rather than coats, it cannot peel or flake, and maintenance requires no sanding or stripping — just clean the surface and re-apply when it looks dry. The clear formulation adds no pigment, so the poplar's natural thermally-modified brown will show through initially and gradually transition to a silver-gray patina if left unmaintained with a colortone.
Ideal for exterior siding, soffits, porch ceilings, cladding, and covered outdoor applications where a domestic hardwood with contemporary durability is desired.
Specifications
| Spec | Detail |
|---|---|
| Species | Yellow Poplar (Liriodendron tulipifera) — thermally modified |
| Product Line | Thermac by Bingaman & Son Lumber |
| Origin | Appalachian / Pennsylvania hardwood |
| Modification | Thermal modification — heat and steam only, no chemicals |
| Finish | Cutek Extreme Clear (penetrating oil) |
| Finish Type | Oil-based, non-film-forming |
| Color | Rich chocolate brown, consistent through the full board |
| Weathering | Silvers to gray patina over time if not maintained with colortone |
| Durability Class | Class 1 ("very durable") when tested per EN 350 standards |
| Janka Hardness | ~500–615 lbf (thermally modified yellow poplar) |
| Dimensional Stability | Significantly improved vs. untreated poplar; tangential/radial movement ~1.1–1.2% |
| Service Life | Designed for up to 25 years in exterior applications |
| Applications | Exterior siding, soffits, porch ceilings, cladding, covered outdoor living, trim |
| Maintenance | Clean and re-oil with Cutek Extreme as needed — no sanding or stripping required |
| Sustainability | Domestic, fast-growing hardwood; chemical-free modification process |
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Kebony Technology
Kebony uses a patented wood modification process that combines bio-based liquid infusion with heat. The process permanently thickens the cell walls of the wood, which improves stability, hardness, and durability compared with the original wood species.
This is different from standard heat-treated timber. Kebony describes its process as bio-based liquid infusion plus heat, while heat-treated timber relies on high temperature alone. Kebony says the modification changes the wood’s cell walls, while heat treatment does not alter the cell structure in the same way.
This technology helps Kebony perform more like a premium exterior wood while using more sustainable source material. For builders and architects, that means a natural wood option for projects where tropical hardwoods may not be the preferred specification.
Frequently Asked Questions
Kebony is a modified wood product designed for exterior applications such as decking, cladding, siding, furniture, and architectural features. It uses a patented process that combines bio-based liquid infusion with heat to improve the wood's stability, hardness, and durability.
Yes. Kebony is real wood that has been modified to improve performance. It starts with sustainably sourced timber and is treated with a bio-based liquid that becomes permanently bonded inside the wood fibers.
Kebony can be used for decking, cladding, flooring, roofing, windows, doors, furniture, and design objects. At Mason's Mill, common project uses include decks, siding accents, exterior cladding, outdoor living areas, and architectural wood details.
Kebony does not require special maintenance beyond normal cleaning, but it can be oiled, stained, or painted to reduce the graying effect or change the color. If left unfinished outdoors, Kebony naturally develops a silver-grey patina over time.
Kebony can typically be cleaned with water and a brush. For mold or algae, use water mixed with ordinary household cleaning agents or detergents suitable for exterior use, then rinse with clean water.
Kebony states that high-pressure washers are generally not recommended. If used, the washer should be equipped with suitable brushes that reduce and diffuse the water jet, and water jets should never be applied directly to the wood surface.
Kebony is a strong candidate for Houston exterior projects where the design calls for natural wood, durability, and lower maintenance. It is suitable for decking, cladding, siding accents, outdoor structures, and architectural exterior details.
Kebony decking, samples, and related hardware are available through Mason's Mill & Lumber Co. in Houston, Texas. Contact the Mason's Mill team for availability, quotes, samples, and project guidance.
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