By slightly charring the surface of the wood without combusting the whole piece, the wood becomes water-resistant through the carbonization and is thus more durable, [4][5] however there is conflicting evidence that this method of wood preservation does not improve durability or fire resistance. It also doesn't make the wood waterproof.[6] It additionally protects the wood against insects, fungi and mold, as well as making the wood a rather fire-resistant material.[7]
This old technique has several similarities with the modern, thermal wood modification[8] methods used in Europe and elsewhere.
Examples
Contemporary architect Terunobu Fujimori works with yakisugi.[9][10] In addition, Japanese architect Kengo Kuma uses this charred wood material in his modern creations.[11]