{"id":5376,"date":"2026-02-27T15:57:48","date_gmt":"2026-02-27T08:57:48","guid":{"rendered":"https:\/\/onggiosaoviet.vn\/?p=5376"},"modified":"2026-02-27T15:57:48","modified_gmt":"2026-02-27T08:57:48","slug":"ong-gio-chong-chay-dung-duoc-bao-lau-giai-dap-tu-chuyen-gia-san-xuat","status":"publish","type":"post","link":"https:\/\/onggiosaoviet.vn\/en\/ong-gio-chong-chay-dung-duoc-bao-lau-giai-dap-tu-chuyen-gia-san-xuat\/","title":{"rendered":"How Long Do Fire-Resistant Air Ducts Last? Expert Answers from Manufacturers"},"content":{"rendered":"

In modern fire protection systems, <\/span>Fire-resistant ducting (EI)<\/b> It is a mandatory component to ensure the safety of the construction project. However, a question that many investors and contractors often wonder about is: <\/span>\u201c"How long do fire-resistant air ducts last?"\u201d<\/b> And how can we maintain their durability over time?<\/span><\/p>\n

This article will provide a detailed look at the lifecycle and factors affecting the durability of this particular product line.<\/span><\/p>\n

\"C\u00f4ng
OGSV workers are working on the project.<\/em><\/figcaption><\/figure>\n

1. What is the average lifespan of fire-resistant ductwork?<\/b><\/h3>\n

Typically, a high-quality fire-resistant duct system, manufactured and installed correctly, has a lifespan ranging from... <\/span>15 to 25 years<\/b>, or in parallel with the lifespan of the structure.<\/span><\/p>\n

However, this number is not fixed. It depends entirely on the composition of the fire-resistant material:<\/span><\/p>\n

    \n
  • Gypsum board air ducts:<\/b> It is highly durable in dry environments, but is easily affected by moisture if the surface is not properly treated.<\/span><\/li>\n
  • Fire-resistant painted air ducts:<\/b> The lifespan depends on the adhesion of the paint layer. After about 10-15 years, the paint may need to be inspected and maintained to prevent peeling.<\/span><\/li>\n
  • Specialized fire-resistant sheet air ducts (such as Magnesium Chloride \u2013 MgO sheets):<\/b> This type is the most durable, resistant to moisture, and does not corrode over time.<\/span><\/li>\n<\/ul>\n

    2. Factors determining the "lifespan" of EI ductwork.<\/b><\/h3>\n

    To determine how long fire-resistant ductwork can be used, we need to consider three core factors:<\/span><\/p>\n

    Reinforcement material quality<\/b><\/h4>\n

    EI ducting is essentially galvanized steel ducting covered with insulation material. If the inner layer of steel rusts due to poor quality, the entire duct structure will weaken, reducing its load-bearing capacity in the event of a fire.<\/span><\/p>\n

    Installation environment<\/b><\/h4>\n
      \n
    • Indoor environment:<\/b> Air ducts installed inside technical boxes or above drywall ceilings have a very long lifespan due to minimal exposure to external forces.<\/span><\/li>\n
    • Harsh environment:<\/b> In chemical plants, coastal environments, or areas with high humidity, if fire-resistant air ducts with moisture-resistant properties (such as new generation fire-resistant panels) are not selected, their lifespan will be significantly reduced.<\/span><\/li>\n<\/ul>\n

      Construction techniques<\/b><\/h4>\n

      A shoddy construction process, leaving gaps in the joints or damaging the outer protective layer, will allow moisture to penetrate the core, causing internal damage after 5-7 years of use.<\/span><\/p>\n

      3. EI standards and fire resistance limits<\/b><\/h3>\n

      It should be noted that the concept of "how long it can be used" also includes... <\/span>fire resistance time<\/b> When a real fire occurs, this is the most important parameter in fire safety inspection:<\/span><\/p>\n

        \n
      • EI 30, EI 45:<\/b> It can withstand fire and maintain its structure for 30-45 minutes.<\/span><\/li>\n
      • EI 60, EI 90:<\/b> Commonly used in parking lots and high-rise building corridors.<\/span><\/li>\n
      • EI 120, EI 150:<\/b> Suitable for utility shafts running through floors, ensuring the smoke extraction system operates reliably for 2-2.5 hours during a fire.<\/span><\/li>\n<\/ul>\n

        4. How to maintain maximum durability for your duct system.<\/b><\/h3>\n

        To ensure fire-resistant duct systems function effectively for decades, businesses should implement the following:<\/span><\/p>\n

          \n
        1. Periodic check:<\/b> Inspect fire-resistant materials for cracks and peeling at least once or twice a year.<\/span><\/li>\n
        2. Proper hygiene:<\/b> Avoid using harsh cleaning chemicals that can corrode the outer protective layer.<\/span><\/li>\n
        3. Choose a reputable manufacturer:<\/b> The product must have all the necessary certifications from the Fire Prevention and Control Department, ensuring that the input materials meet the stated specifications.<\/span><\/li>\n<\/ol>\n

          Conclude<\/b><\/h3>\n

          Fire-resistant ducting is not just a short-term investment, but a long-term solution for protecting property and lives. With the right materials and a reputable manufacturer, you can rest assured of the system's durability for decades.<\/span><\/p>\n

          Our company is proud to be a leading supplier of EI fire-resistant ducting that meets standards, committed to long-lasting quality.<\/b><\/p>","protected":false},"excerpt":{"rendered":"

          In modern fire protection systems, fire-resistant air ducts (EI) are a mandatory component to ensure building safety. However, a question frequently asked by many investors and contractors is: "How long do fire-resistant air ducts last?" [...]<\/p>","protected":false},"author":3,"featured_media":5377,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[198,192,194],"class_list":["post-5376","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc","tag-do-ben-ong-gio-chong-chay","tag-ong-gio-chong-chay-hai-phong","tag-san-xuat-ong-gio-chong-chay-hai-phong"],"_links":{"self":[{"href":"https:\/\/onggiosaoviet.vn\/en\/wp-json\/wp\/v2\/posts\/5376","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/onggiosaoviet.vn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/onggiosaoviet.vn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/onggiosaoviet.vn\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/onggiosaoviet.vn\/en\/wp-json\/wp\/v2\/comments?post=5376"}],"version-history":[{"count":2,"href":"https:\/\/onggiosaoviet.vn\/en\/wp-json\/wp\/v2\/posts\/5376\/revisions"}],"predecessor-version":[{"id":5379,"href":"https:\/\/onggiosaoviet.vn\/en\/wp-json\/wp\/v2\/posts\/5376\/revisions\/5379"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/onggiosaoviet.vn\/en\/wp-json\/wp\/v2\/media\/5377"}],"wp:attachment":[{"href":"https:\/\/onggiosaoviet.vn\/en\/wp-json\/wp\/v2\/media?parent=5376"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/onggiosaoviet.vn\/en\/wp-json\/wp\/v2\/categories?post=5376"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/onggiosaoviet.vn\/en\/wp-json\/wp\/v2\/tags?post=5376"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}