【1926年から続く】群馬の板金職人魂：永盛板金の歴史と未来
永盛 斉(Hitoshi Nagamori)
株式会社永盛板金 三代目代表
— The History and Craftsman's Soul of Nagamori Sheet Metal Since 1926 —
In Taisho-era Gunma, amidst the flying sparks of night, the sound of tin echoed.
A single craftsman continued to work, protecting the lives of people sleeping under their roofs.
That echo, born in 1926, quietly lives on to this day.
1. 1926年から続く物語の始まり
Our company, Nagamori Sheet Metal Co., Ltd., traces its roots back to Taisho 15 (1926).
Our history began the moment founder Yoshitaro Nagamori opened a small tin shop in Hanawa, Seta-gun, Gunma Prefecture (present-day Midori City).
At that time, along the Ashio Line, many houses had thatched or cedar bark roofs, and fires caused by sparks from steam locomotives were a problem.
Yoshitaro Nagamori focused on using tin for roofing to protect homes from fire.
By utilizing tin cans (18-liter cans) and employing techniques like English roofing, he brought new life to architectural sheet metal work in Gunma.
The passion and skill of the craftsman holding tin became the foundation of Nagamori Sheet Metal, and that spirit has been passed down to this day.
2. 戦時下に育まれた家族の絆
Time progressed to Showa 19 (1944).
Amidst the harsh conditions of wartime, the eldest son, Kiichi Nagamori, joined the family business at the age of 15.
Though young, a step towards the future was taken here.
After the war ended, in Showa 21 (1946), the second son, Etsuji Nagamori, also began supporting the family business at 15.
Furthermore, in Showa 27 (1952), the third son, Doji Nagamori (Michiji), joined at 15.
The brothers united, honing their skills relying on family bonds.
These efforts built the foundation for Nagamori Sheet Metal's subsequent leap forward.
A scene from Showa 30s: Nagamori Sheet Metal's craftsmen meticulously handcrafting a square scupper (rainwater collector). A piece of architectural sheet metal history.
3. 創業への第一歩：群馬での新たな歴史
In Showa 45 (1970), Doji Nagamori (Michiji) established "Nagamori Sheet Metal" in Nishikata, Nitta-gun, Gunma Prefecture (present-day Midori City).
Breaking away from the sheet metal shop run by his brothers, a new history rooted in Gunma began.
This moment marks the direct roots of the current Nagamori Sheet Metal Co., Ltd., and a key milestone in our journey since 1926.
As architectural sheet metal professionals handling roofs, exterior walls, and rain gutters, we have continued to refine our skills to protect the lives in Gunma.
A scene from Showa 30s: Nagamori Sheet Metal's craftsmen meticulously handcrafting a square scupper (rainwater collector). A piece of architectural sheet metal history.
Nagamori Sheet Metal's careful work supports Gunma's roofs: Roof material being loaded during renovation work at Ota City Rice Center in the 2020s.
4. 伝統と革新の融合：現代への進化
Nagamori Sheet Metal continued to evolve thereafter.
In September 2005 (Heisei 17), we advanced to a new stage as a corporation, strengthening our organizational foundation.
In 2014 (Heisei 26), Hitoshi Nagamori assumed the position of representative, beginning a new leadership looking towards the future.
Then in 2016 (Heisei 28), we became a ソーラチューブ authorized dealer as "Skylight Tube Gunma / Nagamori."
We delivered innovative natural light technology to Gunma, greatly expanding our business.
Furthermore, in April 2020 (Reiwa 2), Yoshiki Nagamori led the launch of Yahoo! Shopping "SHEET METAL NAGAMORI," achieving nationwide expansion.
Nagamori Sheet Metal's precise technology adds color to Gunma's roofs: Red standing seam roof under construction for a large project in Ota City in the 2010s.
Nagamori Sheet Metal's careful work supports Gunma's roofs: Roof material being loaded during renovation work at Ota City Rice Center in the 2020s.
5. 1926年から続く物語、未来へ響く
Nagamori Sheet Metal's history spans 55 years since its establishment in 1970, and tracing its roots, our journey began in 1926.
It has expanded from Gunma to Tochigi and Saitama, continuing to resonate into the future.
Nagamori Sheet Metal, embodying the spirit of craftsmanship and innovation in its DNA, will continue to pursue masterful techniques to support customers' lives as architectural
sheet
metal professionals.
This long journey since the Taisho era is not merely an accumulation of years, but a crystallization of the passion embedded in each and every job.
As younger generations join, that crystallization is passed on to the next hands, powerfully etching the future.
The hands that have worked for 38 years will pass to the sons, and the craftsmanship that endures since 1926 will pierce the future.
That echo will not cease, continuing to protect the next generation.
With gratitude to our predecessors and former generations, we entrust the future to the fourth generation.
Nagamori Sheet Metal's technology brings beauty to Gunma's homes: Reverse R-roof with standing seam installed at a residence in Midori City in the 2010s.
Nagamori Sheet Metal's technology brings brilliance to Gunma's stores: Horizontal seam roof, Lapwall exterior walls, and galvanized rain gutters installed at Tawaruya store in Ota City in 2024.
よくあるご質問
Q1. 永盛板金はいつ創業しましたか？
永盛板金は、大正15年（1926年）に群馬県勢多郡花輪（現在の緑市）で創業者・永盛芳太郎が小さなトタン屋を開いたのが始まりです。
Q2. 創業当初、どのような課題に取り組んでいましたか？
創業当時は、足尾線沿線の茅葺きや杉皮葺きの家が多く、蒸気機関車の火の粉による火災が問題となっていました。創業者・芳太郎は、トタン板を屋根に利用することで、火災から家を守ることに注力しました。
Q3. 永盛板金の技術はどのように進化してきましたか？
伝統的な板金技術を継承しつつ、2016年にはソーラチューブ正規販売店として自然光技術を導入するなど、常に革新を追求しています。また、Yahoo!ショッピングでの全国展開も実現し、事業を拡大しています。
Q4. 永盛板金が未来に伝えたい職人技とは何ですか？
1926年から続く永盛板金の歴史は、一つ一つの仕事に込められた職人の情熱の結晶です。この職人魂を次世代の職人たちに受け継ぎ、群馬の皆様の安心で快適な暮らしを未来永劫支え続けることを使命としています。
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まとめ:1926年から続く永盛板金の旅路、群馬の未来へ
Craftsmanship from 1926 and eco-innovation to guide your home into the next era. Join us in Nagamori's story.
株式会社 永盛板金
三代目代表 永盛 斉
— 永盛板金の歴史と未来の家づくり・板金のご相談はこちら —
1926年から続く知見と、職人の手仕事で、お住まいをしっかりお守りします。
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永盛板金のサービスと技術
共に築く、住まいの未来
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