“The Jōki Sauna (jōki meaning ‘steam’ in Japanese) is an outdoor, modular sauna cabin,” Johnathon tells us. The siding the small prefab is treated with yakisugi: a Japanese method of charring wood. The interior wall panels and benches can be made from several types of wood, including Alder, Aspen, Hemlock, Cedar, and thermally treated varieties. Whether electric or wood-fired, the heaters are sourced from suppliers in Scandinavia, like Huum, Narvia, and Iki’s. Photo 3 of 6 in One of the U.K.’s Most Impressive Prefab Builders Just Launched a $58K Sauna

One of the U.K.’s Most Impressive Prefab Builders Just Launched a $58K Sauna

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“The Jōki Sauna (jōki meaning ‘steam’ in Japanese) is an outdoor, modular sauna cabin,” Johnathon tells us. The siding the small prefab is treated with yakisugi: a Japanese method of charring wood. The interior wall panels and benches can be made from several types of wood, including Alder, Aspen, Hemlock, Cedar, and thermally treated varieties. Whether electric or wood-fired, the heaters are sourced from suppliers in Scandinavia, like Huum, Narvia, and Iki’s.