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  1. Home
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  6. CAS-C method [Chimney Asbestos Countermeasures]

CAS-C method [Chimney Asbestos Countermeasures]

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last updated:Jul 06, 2026

エコ・24 本社
エコ・24 本社
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Minimize the impact on facility operations due to chimney asbestos and enable response in as little as one day!

The CAS-C method is a construction technique that allows for asbestos countermeasures in chimneys and narrow chimney sections (i.e., cylindrical equipment primarily used for safely discharging air conditioning exhaust, kitchen smoke, or combustion exhaust gases from boilers to the outdoors). It utilizes "Eco Best," which has received material certification from the Ministry of Land, Infrastructure, Transport and Tourism, and an internal spray machine specifically for chimneys called the "Chimney Sprayer" for internal construction. Its greatest feature is the ability to reliably approach narrow areas and small-diameter chimneys that were previously difficult to address. The containment treatment using Eco Best securely immobilizes asbestos fibers without compromising the existing heat resistance, enhancing safety while maintaining the original function of the chimney. Furthermore, real-time monitoring with an internal camera has enabled high-precision construction and reliable quality control. Additionally, since it does not involve dismantling, it minimizes the impact on facility operations and can be implemented in as little as one day (note: effectiveness and duration may vary depending on building conditions and construction details). Therefore, it achieves significant cost reductions and shortened construction periods compared to traditional methods. ▶ First, let's conduct a site survey! We will propose the most suitable measures based on the condition of the building. Please feel free to consult us about estimated costs and timelines!

    Special Construction Method
CAS-C工法_表紙.jpg

CAS-C method [Chimney Asbestos Countermeasures]

CAS-C工法_表紙.jpg
CAS-C工法_表紙.jpg CAS-C工法(飛散イメージ).jpg
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■About the Construction Method - This is a construction method that achieves safety measures by sealing the asbestos inside the chimney without stopping operations. ◆◇◆◇◆◇◆◇◆◇◆◇◆◇◆◇◆◇◆◇◆◇◆◇◆◇◆◇◆◇◆ Over 300 successful cases / Patent obtained / Ministry of Land, Infrastructure, Transport and Tourism material certification "Eco Best" ◆◇◆◇◆◇◆◇◆◇◆◇◆◇◆◇◆◇◆◇◆◇◆◇◆◇◆◇◆◇◆

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■Purpose - Asbestos measures for chimneys in commercial facilities, hospitals, schools, and plant facilities → Chimney = A cylindrical facility that safely discharges air conditioning exhaust, kitchen smoke and exhaust, or combustion exhaust gases from boilers outdoors. ■Construction Achievements (※Partial excerpt / Order not specified, no honorifics) □Public Works Nerima Ward, Suginami Ward, Taito Ward, Machida City, Saitama City, Gyoda City, Iruma City, Funabashi City, Yokohama City, Yokosuka City, Sapporo City, Asahikawa City, Aomori City, Morioka City, Tono City, Ichinoseki City, Oshu City, Sendai City, Utsunomiya City, Takasaki City, Maebashi City, Midori City, Hamamatsu City, Nishinomiya City, Hiroshima City, Fukui City, Imizu City ※Many other private facilities

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CAS-C method "Chimney Asbestos Countermeasures"

CAS-C method "Chimney Asbestos Countermeasures"

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Asbestos smart survey

Asbestos smart survey

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[Construction Achievements] Chimney Asbestos @ Hokkaido

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The other day, we worked on the chimney in Tsurui Village! There are still many untreated chimneys in Hokkaido, and they are currently dispersing dust. This year, we also plan to carry out chimney asbestos treatment in Kushiro. Our company aims to quickly complete the "asbestos containment treatment for chimneys" to prevent exposure damage in advance. We can respond nationwide, so if there are any companies that would like to at least conduct an asbestos survey, please feel free to contact us for a consultation.

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Do you understand that you are dispersing asbestos?

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Currently, asbestos dust is being re-dispersed during the demolition process! Even if we prioritize the removal of asbestos from the interior and then proceed with the demolition of the structure, the "re-dispersion measures" are insufficient. Even if re-dispersion occurs, it is possible to prevent health hazards by applying "EcoBest" to neutralize the fibers.

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エコ・24

エコ・24 本社

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Eco 24 Co., Ltd. is a company that develops its business using environmentally friendly ceramic coating technology. With its unique technology based on four fundamental pillars, it provides coatings for various materials such as buildings, ships, and vehicles, achieving long-term weather resistance and durability, as well as numerous benefits such as low environmental impact, leading to many successful projects.

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