It might seem that all Shou Sugi Ban panels and boards look beautiful and that is the end of that. Nevertheless, the list of positive features beside the enhanced beauty of wood does not stop at that. Wood charring takes care more than just of the finish. It also vastly improves the physical characteristics of the processed piece. How?
Well, firstly we have to understand what qualities should a wall panel be known for. It has to look nice, of course. Furthermore, walling has to be durable, water and vermin-proof as well as breathable. We all could agree that these are positive, and much sought-after qualities in any interior or exterior décor. Having waterproofing and breathability, however, is usually a bit of a challenge.
Luckily, the Yakisugi technique makes sure that burnt wood walls are all of those aforementioned things. The exposure to fire of 1100 degrees Celsius forces pores on wood to shrink and close. In addition, every piece of organic material (mostly sugar) evaporates, leaving the panels immune and repellent to vermin and various parasites. Finally, Shou Sugi Ban is much more fire retardant when you compare charred timber wall panelling with regular timber.
Shrinking of the pores is an efficient way to add waterproofing to wood, since those pores were the primary accumulators of H2O. Even with waterproofing, charred wood wall panelling remains breathable and very long-lasting.