Fire-Resistant Yakisugi - Flame Spread Test w/ Nakamoto Forestry

Flammability testing of yakisugi (shou sugi ban) to visually display flame spread resistance due to heat treatment. All of our laboratory tests have had UL/ASTM/CAN102 Class A flame spread results with OR without flame retardant. 3 minute angled burn at a consistent torch BTU and 4" height over the wood. Japanese heat treatment slows down flame spread in the same way as flame retardants do: by impeding the penetration of oxygen into the wood.
About:
Nakamoto Forestry is the largest producer of yakisugi in the world and has now expanded distribution to North America with inventory in Portland, Oregon. Our four mills in Hiroshima and Tokushima operate custom automated lines to produce high-grade and affordable product. In Japan we have owned and managed large tracts of forest for decades, using the logs our harvest teams bring in to mill the most consistent yakisugi available anywhere. We would like the international community to appreciate that Japan has always had a large domestic forestry industry, one that has ingrained respect for the forest fiber with which we shelter ourselves.
Footage is from our mill in Hiroshima, Japan and our production facility in Portland, Oregon, USA.
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