Hello, We Are Hiil.
A Wood Charring House and Manufacturer of Kiertopuu®️ Products
Charred wood is timber whose surface has been modified by burning. Burning wood is a natural and non-toxic way to enhance its weather resistance and protect it from decay organisms. Charring the surface does not weaken the wood’s structure, so surface-charred wood can be used in the same ways as any other wood material.
Charred timber is also available under the Kiertopuu®️ brand, manufactured following circular economy principles.
Kiertopuu®️ – Charred Timber from Sidestreams
Kiertopuu®️ products are made from the sidestreams of sawmill and planing industries. The raw timber for Kiertopuu®️ is typically Finnish spruce, originally marked with bruises, incorrect knot quality, color defects, or unsuitable for structural use based on strength classification. This material, often destined for energy production, can be repurposed for cladding by charring its surface. This process corrects aesthetic or structural flaws in the material, making the wood suitable for valuable construction use.
Applications of Charred Wood
Exterior Cladding
Charred wood is an excellent choice for exterior cladding. The charred wood surface is durable and striking. The Marttakahvio in Joensuu was the first building to feature the charred Kiertopuu®️ surface.
Interior Surfaces
Charred wood is also suitable for interior design. Brushing and surface treatment ensure that the material doesn’t soot. Heavier material is ideal for stairs and tables, while panels and boards are perfect for interior walls.
Structures in the Nature
We would like to see public administration and the municipal sector build more infrastructure and nature structures from recycled wood. This wilderness hut managed by Metsähallitus is clad in charred Kiertopuu®️ panels.
Want to Follow Hiil’s Journey?
Our production is up and running, and we are accepting quote requests. Please send your request through our product page. Currently, we are delivering directly from our factory.
If you want to stay updated with Hiil’s journey and learn about the progress of our projects, follow us on social media or join our Hiil newsletter below. We send emails every 2-3 months.
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