ひわだや List of Products and Services

Hinoki bark roofing is a traditional Japanese roofing technique that uses materials shaped from the bark of the hinoki tree. It allows for elegant curves and a sense of weight in the eaves, and is primarily seen in important cultural properties today. Since only the bark is harvested from standing hinoki trees, it is considered an environmentally friendly method; however, the decrease in available hinoki trees, the aging and reduction of craftsmen who harvest the bark (known as motokawashi), and those who process it into products (known as hiwadakoshiraeshi) have made securing materials increasingly difficult. "Hiwadaya Co., Ltd." was incorporated in 1994 and continues the tradition of "hiwadaya," which has been in existence since the Tenpo era (1830s). The representative, Masashi Sasaki, is the only hinoki bark roofer in Yamaguchi Prefecture. Hiwadaya Co., Ltd. will continue to preserve and pass on the unique traditional architectural culture of hinoki bark roofing in Japan. [Mainly used products] ○ Nagahira (long flat) 2 shaku 5 sun → Approximately 75 cm in total length, with 120 pieces (1 bundle) shaped into a trapezoid. ○ Skilled craftsmen produce 1 to 2 bundles per day. → Each product requires 10 kg to 15 kg of bark. ○ About 2,000 bundles of this product were used in the Ryufukuji construction project in Yamaguchi City, Yamaguchi Prefecture. For more details, please contact us or download the catalog.

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Kakibuki is a traditional Japanese roofing technique that uses materials such as cedar and sawara. It allows for elegant curves and a sense of heaviness in the eaves, and while it is primarily seen in important cultural properties today, its popularity in Nordic-style architecture has led to its increasing use in new architectural designs. When using the same specifications as regular kakibuki, the raw material costs are generally high. However, it can be adapted to fit your budget, so consulting during the design phase will help ensure a smooth process. 【Kakibuki Features】 - Made with split boards of sawara and cedar, offering high material flexibility. For more details, please contact us.

• Wood products

Sugi bark roofing is a traditional Japanese roofing technique that uses sugi bark. It is commonly adopted in garden gates and tea house architecture, and is a popular material in Japanese architecture, used not only for roofs but also for waist walls and fences. At Hiwa-da, we use sugi bark from Yoshino in Nara Prefecture, selecting grades of sugi bark that match your budget and durability requirements, ensuring satisfactory construction. 【Features of Sugi Bark Roofing】 ○ High degree of freedom in construction and design with sugi bark roofing. Generally, re-roofing is considered every 10 to 15 years. Please feel free to contact us for more details.

• Wood products

Hinoki bark roofing is a traditional Japanese roofing technique that uses materials shaped from the bark of hinoki trees. It allows for elegant curves and a sense of weightiness in the eaves, and is commonly seen in important cultural properties such as shrines and temples. Additionally, the sustainable method of harvesting only the bark from standing hinoki trees is attracting attention worldwide. Beyond shrines and temples, it is also used in sukiya architecture and garden gates. It provides an unparalleled presence in high-class, meticulously designed spaces. Maintenance that focuses on repairing only the quickly deteriorating parts, such as rain runoff areas, is effective. 【Features】 - Roofed with materials shaped from hinoki bark. It has a charming, light, and elegant quality, and can also appear substantial depending on the eaves' presentation.

• Wood products

Hiwadaya Co., Ltd. was incorporated in 1994 and has continued the tradition of "Hiwadaya," which dates back to the Tenpo era (1830s). The representative, Masashi Sasaki, is the only hinoki bark thatcher in Yamaguchi Prefecture. Hinoki bark thatching is a roofing construction method that uses materials refined from hinoki bark, secured with bamboo nails. For example, this technique can be seen in the Kyoto Imperial Palace, Kiyomizu Temple, and Itsukushima Shrine, as well as in Yamaguchi City’s National Treasure, the Rurikouji Five-Story Pagoda, and the main hall of Ryufukuji Temple. Hiwadaya Co., Ltd. will continue to preserve and pass down the unique traditional architectural culture of hinoki bark thatching in Japan. 【Business Activities】 ○ Roofing construction for shrines and temples ○ Business Types → Hinoki bark thatching (hiwadabuki) → Kokerabuki → Doibuki → Copper plate roofing → Cedar bark thatching (sugikawabuki) ○ Sales of hinoki bark products For more details, please contact us or download the catalog.

• Wood products