The structure of tatami is comprised of 3 materials.

Surface　：　Tatami facing
Core materials　：Insulation board (wood fiberboard）
Surface　：　Slip-proofing for non-woven materials

About tatami in surface area

There are 3 types of materials used for tatami facing.

These are the soft rush(IGUSA), resin type(TOKYOSERIES), and Japanese paper type(ZEN).

IGUSA (soft rush)

Igusa(Soft rush) is a tatami facing material that has been in Japan for 1400 years.
The characteristics of soft rush are that it absorbs and expels moisture, this providing the function of regulating the moisture in the room.

Igusa has a distinctive fragrance, which is loved by Japanese people. However, some foreigners have an aversion to this smell.
The smell of soft rush is strong at first, but gradually weakens as the months pass.
With aging, the color of soft rush changes from green to yellow.

TOKYO SERIES(Resin type)

This has a full color and durability.
It does not have the distinctive aroma of soft rush.
It does not become discolored through contact with the sun, and there are no concerns regarding the emergence of mold.
This is a modern tatami that can be coordinated in line with the interior.

ZEN(Japanese paper type)

This has a water repellent finish, so even if liquid is spilled on the tatami, this is repelled, becoming like a puddle.It does not have the distinctive aroma of soft rush.
It does not become discolored through contact with the sun, and there are no concerns regarding the emergence of mold.
This is a modern tatami that can be coordinated in line with the interior.

About core materials

The insulation board is one type of fiber board and is a construction material made from wooden fibers.
This is a heat-resistant material with excellent sound absorbency. This helps you maintain an environment that is warm in the winter and cool in the summer.