Façade maintenance: How do you protect a burned wood cladding?

Burned wood — also known as Shou Sugi Ban or Yakisugi — is gaining popularity in the world of architecture and exterior cladding. Its unique appearance, durability, and natural character make it a beloved material for both modern and traditional facades. But how do you ensure your charred wood façade remains beautiful and protected year after year?

In this blog, you’ll learn everything about maintaining charred wood cladding and how to extend the lifespan of your façade.

What exactly is burned wood?

Charred wood is a traditional Japanese technique where wood is burned on the surface. This process creates a carbonized top layer that not only gives it an intense black color but also provides protection against weather, mold, and insects. The charred layer retains its deep black color, which means Shou Sugi Ban cladding requires very little maintenance.

Is maintenance really necessary for burned wood?

Although charred wood is naturally weather-resistant, that doesn’t mean it’s entirely maintenance-free. Depending on your home’s location, exposure to sun, wind, and rain, and the type of wood used, your cladding may age or develop green deposits over time.

Regular façade maintenance ensures that:

• The deep black color remains vibrant
• The surface stays protected against moisture and dirt
• The lifespan of your façade is significantly extended

How to maintain your burned wood façade

1. Perform regular visual inspections
Check your cladding at least once a year. Look for discoloration, green buildup, or damage. Early detection helps prevent bigger problems in the long run.

2. Clean with gentle products
Avoid using pressure washers or hard brushes! Rinse the wood with lukewarm water and use a soft brush or cloth. For stubborn dirt, you can use a natural soap (like Castile soap or green soap) or cleaning vinegar.

3. Reapply oil treatment
Some charred wood products are brushed and then stained or oiled after burning. Reapplying a suitable oil or stain every 3 to 5 years nourishes the wood and helps maintain the deep black appearance.

Important: Always use an oil or stain that is specifically made for burned wood. Some products can alter the color or add an unwanted glossy finish. Always consult your wood supplier for the right recommendation.

What not to do when maintaining burned wood 

• Don’t use aggressive cleaners or bleach
• Don’t sand the surface — this can damage the charred layer
• Avoid painting over it with regular paint — this removes its unique look and can cause cracking
• Don’t use pressure washers or stiff brushes — opt for a soft cloth or gentle brush instead

Final note: every façade is unique

Burned wood maintenance is relatively simple, but depending on the type of wood, finish, and environmental conditions, your façade might have specific needs. When in doubt, always consult your wood supplier or a façade specialist.

Charred wood is durable, stylish, and — with the right maintenance — a true eye-catcher for years to come. By inspecting it yearly, cleaning it gently, and applying a suitable oil or stain when needed, your façade will remain protected and beautifully black.

Want to learn more about maintaining your burned wood façade? Or need help with the treatment? Feel free to contact us — we’re happy to help!