The wood charring technology itself is another piece worthy of attention. The technology was created and refined back in Medieval or Ancient Japan. We only applied modern technology and state-of-the-art engineering solutions to increase production outputs and satisfy the growing needs of our customers. The diligent steps we take remain, mostly unchanged. Here is how regular planks and deck boards are turned into Shou Sugi Ban deck boards.
The secret of the process is in properly burning the outer layer of the plank. Well-equipped and trained personnel expose a spruce or pine board, for example, to flames that reach up to 1100 degrees Celsius. This is how we evaporate and eliminate all organic compounds from the wood. Elimination of organic compounds means no threat from parasites and infestations, which are common causes of wood damage.
Moreover, the heat forces the pores, which cover most of the wood’s surface, to close. Pores are essential for a live tree, but once it becomes construction material or Shou Sugi Ban, it has to distinguish itself with very different qualities. One of which is ‘Being waterproof’. Once pores close, the timber cannot absorb moisture, thus becoming waterproof. However, it remains breathable, even though Yakisugi makes it waterproof.
Only by setting timber on fire for long enough, we can achieve the aforementioned qualities. Not charring it enough will still leave it vulnerable to outside threats while burning it too long will damage it irreversibly. In addition, Yakisugi deckings have a much deeper colour, more enhanced wood lines and tones rather than regular timber. The aesthetic side of things mustn’t be overlooked, also.
As you can see, Yakisugi is a complex and very unique process. However, we have the savoir-faire which allows us to produce top-notch burnt wood decking pieces for our clients and their guests to enjoy.