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Koyo Ibushi



The Beautiful Luster of KOYO IBUSHI for Carbon Smoked Mosaic tiles

KOYO SEIGA, founded in 1923, is known for the outstanding quality of its ibushi-kawara,
smoked roof tiles. Koyo Ibushi™ is our line of ibushi-kawara materials used for applications other than roofs, such as wall coverings. Both ibushi-kawara and Koyo Ibushi™ employ the same traditional manufacturing methods.

We fire the clay tiles at high temperatures, creating a carbon film on their surfaces. This
strengthens their weather resistance, helping the wooden architecture beneath them to withstand rain and snow for extra centuries. The carbon covering the surface of ibushi-kawara reflects light and produces a beautiful luster called ibushi-gin, smoked silver. The effect creates a uniquely Japanese beauty that no other building material can produce.

Our highly skilled artisans make ibushi-kawara from soil and carbon, environmentally safe
materials. We have contributed to the conservation and restoration of traditional architecture

including Himeji Castle, a registered national treasure, as well as renowned shrines and temples.

Our Koyo Ibushi™ will sustain its beautiful luster in your space too, for many years to come.

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