Shou-sugi-ban 焼き杉 is a Japanese method of charring cedar boards. The method is simple. You char the surface of the wood, scrape it with a metal brush and apply a sealant. The charring creates a protective layer and also, surprisingly, makes the wood more resistant to fire. The technique extended the life of exterior cladding in a country where wood was a precious commodity.
The technique fell out of favor with the advent of modern materials but has seen a revival of late in the contemporary architecture scene. Designers, I think, are drawn to the dark color of the wood as well as the sustainability of the practice. I defy you to find a recent issue of Dwell Magazine without a Shou-sugi-ban wall.
The video above shows a modern method using a propane torch. You can see an alternate method, based on the traditional technique, here. Like most exterior wood projects, it’s a good idea to apply new oil annually. I’ve seen two recommendations: tung oil and Penofin.
I’m pondering the method for some upcoming backyard projects and am wondering if any of you have tried Shou-sugi-ban. If you have leave a comment!