Shou Sugi Ban: An Ancient Technique with Modern Appeal

When you’re building something that will live outdoors, protecting the wood from the elements is essential. Sun, moisture, and temperature changes can break down your boards over time. That’s why treating your wood is just as important to the finished product as choosing the right lumber to build it with. Members of the Woodland Mills community use a wide range of methods to preserve their outdoor builds. Some prefer store-bought sealants and stains while others swear by homemade mixes like diesel and used motor. There are those, however, who turn to an old-world technique - woodburning. More specifically, Shou Sugi Ban.

What Is Shou Sugi Ban?

Shou Sugi Ban (traditionally called Yakisugi in Japan) is a centuries-old method of preserving wood by burning its surface. Originating in 18th-century Japan, the technique was primarily used to protect cedar siding from weather, insects, and ironically enough, even fire. By charring the exterior of the wood, the outer layer becomes carbonized, creating a hardened, protective shell that resists rot and pests while also giving the wood a bold, textured appearance.

Recently, shou sugi ban has been making a comeback. It is valued, not only for its durability but also, for its dramatic aesthetic. With practice, you can achieve a range of looks from rich, blackened board to a lighter brown that highlights the wood grain.

What You’ll Need to Try It at Home

If you want to experiment with Shou Sugi Ban in your own shop or backyard, you only need a handful of tools and materials:

Torch: Many to choose from, but a propane torch works well for even, consistent heat.

Linseed Oil: Traditionally used to seal the wood after burning, enhance the grain, and add long-term protection.

Safety Gear: Heat-resistant gloves, long sleeves, eye protection, a fire extinguisher nearby, and a safe area clear of flammables.

Optional but helpful:

A Stiff Brush: (To remove loose char and bring out the grain)

Rags: For applying the oil

How to do Shoul Sugi Ban at Home

Prepare Your Work Area: Set up in an open, well-ventilated, non-combustible area, ideally outdoors or in a driveway. Ensure there’s nothing nearby that could catch fire. Be sure to follow any fire related bi-laws in your area.

Torch the Wood: Ignite your torch and slowly pass the flame over the surface of the board. Keep the torch moving so you don’t create deep burn pockets. You’re aiming for an even char, where the wood turns black and the grain starts to rise. For siding or fencing, a deeper burn (sometimes called the “alligator skin” look) adds more protection.

Brush (Optional): Once the wood cools slightly, use a stiff brush to remove loose soot. Brushing exposes the raised grain and creates a textured finish that many woodworkers love. You can make it subtle or dramatic depending on how aggressively you brush.

Oil the Surface: Wipe the board with linseed oil to seal and nourish the wood. The oil deepens the colour, highlights the grain, and adds another layer of weather resistance. Apply multiple coats if the piece will live outdoors.

Let It Cure: Allow the oil to soak in and cure fully before installation. Depending on temperature and humidity, this may take a few hours to a couple of days.

Shou Sugi Ban is a beautiful blend of function and craft. It transforms ordinary boards into durable, eye-catching pieces. Whether you’re protecting outdoor lumber, looking for a unique finish, or simply trying something new, this traditional Japanese technique is well worth exploring. It’s no wonder why so many sawyers from the Woodland Mills community stand by this woodburning technique. For more great ideas or to share your own, check out the Woodland Mills Product Owners & Community group on Facebook.