Modified wood like Kebony® and Accoya® are excellent choices for siding and decking, especially when paired with time-saving fastening solutions like Grad® System.
What Is Modified Wood?
Modified wood is natural wood that has been enhanced for better strength, durability, hardness, and longevity. Kebony® for example, is modified using a bio-based liquid, giving a sustainable softwood the properties of a premium hardwood. Accoya® lumber goes through an acetylation process, similarly transforming it from a softwood into a hardwood.
With superior moisture and rot resistance, modified woods are an increasingly popular choice for exterior applications such as siding and decking. Plus, they require little maintenance.
Sustainably sourced and engineered for long-term performance, it’s no wonder so many homeowners choose modified wood.
Kebony®: Dually-Modified Performance with Scandinavian Style
Developed in Norway, the Kebony® technology is an environmentally friendly, patented process, which enhances the properties of sustainable softwood with a bio-based liquid. The result is a beautiful, low-maintenance option for decking and siding.
Kebony® Wood for Siding
Featuring a rich, dark brown color, Kebony® only gets more beautiful over time. After exposure to sun and rain, Kebony® develops a natural silver-gray patina.
Kebony®’s excellent dimensional stability makes it well-suited for rain screen applications. Additional Kebony® wood siding benefits include resistance to rot, fungi and insects.
Kebony® for Decking
Kebony® is the ultimate low-maintenance decking material, with no finishing or chemical treatments required. Featuring beautiful natural grain patterns, this bare-foot friendly decking is designed to perform in all climates, including freeze/thaw cycles.
General Specs & Warranty
Sourced from FSC-certified forests, Kebony® is backed by a 30-year warranty for above-ground use.
See how this Mid-Century home in Chatham, Massachusetts was transformed with Kebony® siding:
Grad® System: The Innovative Mounting System for Modified Woods
Grad® System is a 100% hidden fastening solution for decking and cladding. This innovative system speeds up installation and allows for easy decking board replacement. Compatible with Kebony®, Accoya®, and other modified woods, Grad® System makes building decks and siding homes easier than ever.
Grad® for Siding
Grad® System makes siding houses a breeze with consistent board spacing for clean architectural lines. Its ventilated design reduces moisture retention and the lack of visible screws gives a sleek, modern finish.
Grad® for Decking
Featuring a clip-and-go design, Grad® System saves labor time when building decks. Grad® System provides enhanced airflow for your deck, which helps prevent rot and warping. In addition to traditional decks, Grad® System can also be used for rooftop applications and raised decks with the Grad pedestal system.
Accoya®: Acetylated Wood That’s Built to Last
A sustainable, high-performance wood, Accoya® was designed exclusively for exterior applications such as decking and siding.
Accoya® for Siding
Featuring excellent stability and minimal shrinkage or swelling. Ideal for both modern architectural builds or historic renovations, Accoya® accepts paints and stains exceptionally well.
Accoya® wood siding installation tips
Check out the Accoya® Siding Guidelines for more information and tips on installing Accoya® wood siding.
Accoya® for Decking
Accoya® is a highly durable and barefoot-friendly decking solution. Thanks to the non-toxic acetylation process, Accoya® resists rot and insect damage and is well-suited for high-moisture or coastal environments.
General Specs & Warranty
Composed of sustainably sourced Radiata pine, Accoya® is backed by a 50-year above-ground and 25-year in-ground warranty. Accoya® is also Cradle to Cradle Gold Certified.
Why Modified Wood Is the Smart Choice for Siding and Decking
Modified wood such as Kebony® and Accoya® are naturally beautiful alternatives to tropical hardwoods. With no constant staining or sealing required, these low-maintenance materials are excellent choices for siding and decking. Both woods are sustainably sourced with a low environmental impact and are backed by warranties for added peace of mind.
Modified wood is well-suited for a variety of applications, including:
- High-end residential homes
- Coastal and humid climates – thanks to their resistance to warping and decay
- Modern architectural designs with clean lines
For example, check out the way Accoya® siding really makes this Houston, Texas office building pop!
Which One Is Right for Your Project?
When it comes to choosing between Kebony® and Accoya®, you can’t go wrong either way. Both materials are extremely durable and low-maintenance, perfect for your exterior project.
Pair either wood with Grad® System for fast installation and seamless design.
Rex Lumber Company is a proud supplier of Kebony® and Accoya® lumber. In addition to selling Grad® System rails, we also offer grooving services, so your lumber will work seamlessly with Grad® System.
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