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We completed the experimental phase of hinoki wood treated with a new glass based product.

The sample in the picture above has been coated with 2 layers and let dry for 12 hours.This product is isopropyl alcohol based and its effect is semi-permanent.

Generally, any type of full penetration product silicon based or fluoride based deteriorates overtime and it becomes more permeable to water (and dirt).This product creates a matte glass coating thus it is virtually permanent and does not allow dirt or mold particles to stick to the wood.
If used outside, it can be labeled as self cleaning as when it rains also the dirt particles are swept away.

One downside is that it closes the pores of wood hence the aroma of hinoki is almost completely eliminated (unlike other silicon based products like Kihada ichiban).

We are going to use this glass based product on the bottom plank (top and bottom side) because it is the most vulnerable as it collects all the tensions coming from the sides.It is also the last surface to dry while the side planks are already contracting.The aroma releasing surface may be reduced by 1/9 but the tub becomes sturdier and more stable.

Please contact us for any question.
japan@bartokdesign.com