Let’s Build Something That Lasts
Fill out our quick form and get a free quote—no pressure, just straightforward advice and premium materials that stand up to the elements.
decking
Why Choose Thermally Modified Wood Decking?
Thermally modified wood decking delivers superior durability, stability, and natural resistance to moisture, insects, and decay. We use an innovative heat-and-steam treatment that transforms the wood at a molecular level. This process makes the wood hydrophobic and highly resistant to warping, swelling, and rotting. The result: long-lasting performance, even in high-humidity environments.
The Science Behind Thermally Modified Wood
The thermally modified wood process began with softwood lumber and now enhances hardwoods like maple, ash, birch, and oak. ThermalWood Canada created more than 200 unique treatment recipes to maximize performance for each species.
We stack lumber with two-inch gaps so heat and steam circulate evenly in our propane-heated kiln. Precise control over temperature and duration ensures each species becomes stable, weather-resistant, and ready for outdoor use.
This process alters the wood’s sugars, making them indigestible to insects and mold. It also blocks moisture absorption, so the decking resists environmental damage without chemical treatments. Heat treatment deepens the wood’s color, which you can preserve with a UV finish or let age into a silver-gray patina.
Benefits of Thermally Modified Wood Decking
Our decking delivers exceptional durability, fighting rot, insects, and decay without the need for chemicals. It also offers enhanced stability, resisting shrinking, swelling, and warping even in extreme weather conditions. Because the wood is modified using only heat and steam, it remains sustainable and chemical-free, making it safe for homes, businesses, and the environment. Its versatility makes it ideal for decks, patios, boardwalks, poolside areas, and waterfront properties.
Tested in both Canada’s harsh winters and the Caribbean’s tropical climate, our decking has proven its performance around the world. In Barbados, architects placed a piece of our wood inside a termite mound for six months. The termites ignored it completely—demonstrating its unmatched resistance to pests.
A Global Standard in Wood Innovation
At ThermalWood Canada, we focus on quality, performance, and sustainability. Our thermally modified ash decking offers durability, rich color, and eco-friendly construction. We proudly supply decking across Canada, with distributors in Alberta and British Columbia, and internationally in the U.S., Europe, and the Caribbean.
If you want a beautiful, long-lasting deck that stands up to the elements, choose thermally modified wood decking. Contact us today to explore products and find the perfect fit for your next project!
Cutek
Cutek Extreme is a wood protection oil that keeps your thermally modified wood decking looking great for many years to come.
Many wood coatings allow moisture to seep into the wood, which can cause warping and splitting. Cutek oils penetrate the wood, creating protection from within. No peeling or flaking. This makes it an excellent choice for preserving the beauty and durability of thermally modified wood decking.
To learn more about Cutek products, you can visit their website here.
Cutek Colour tone
We offer 18 different options of Cutek Colourtone to ensure that you get the perfect colour for your thermally modified wood decking or siding.
our clip system
ThermalWood Canada has the sole rights to manufacture state-of-the-art GRAD clips (outside of France) to create an easy, DIY installation of your thermally modified wood decking and cladding. The clips are made of POM (polyoxymethylene), which is one of the highest performing plastic on the market, the same to manufacture soles of ski boots.
Your Guide to Thermally Modified Wood
Want to dive deeper into the benefits and science behind thermally modified wood? Our ThermalWood Handbook is available for download and covers everything you need to know—from the modification process and performance benefits to applications for siding, decking, and more. Whether you’re an architect, builder, or homeowner, this comprehensive guide will help you make informed decisions about using thermally modified wood in your next project.
Download the ThermalWood Handbook below and explore the possibilities!
elevate your project with thermalwood
We want to know all about your project. Big or small, it doesn’t matter. ThermalWood Canada is here to bring your project to life. But in order to do that, we’re going to need some information from you so we can give you the most accurate feedback we can. So, click below, explain what you have in mind, and let us tell you how our products will elevate your project to the next level.
