{"id":3399,"date":"2026-01-02T11:40:00","date_gmt":"2026-01-02T11:40:00","guid":{"rendered":"https:\/\/asturmadidoors.com\/fire-rating-specifications-for-metal-doors\/"},"modified":"2026-07-31T10:37:41","modified_gmt":"2026-07-31T10:37:41","slug":"fire-rating-specifications-for-metal-doors","status":"publish","type":"post","link":"https:\/\/asturmadidoors.com\/en\/blog\/fire-rating-specifications-for-metal-doors\/","title":{"rendered":"Fire-Rating Specifications for Metal Doors"},"content":{"rendered":"\n

Certified metal fire doors<\/strong> are a key component of fire safety in any building. Fire-rating certificates<\/strong> guarantee that the doors have been tested and comply with current regulations regarding fire resistance, smoke control, and durability. <\/p>\n\n

Having certified fire doors<\/strong> is not only a legal requirement in many cases, but also a guarantee of protection for people and property.<\/p>\n\n

What are firewall certificates?<\/h2>\n\n

Fire-rated certificates<\/strong> are official documents issued by accredited laboratories that certify that a metal fire-rated door<\/strong> has passed fire resistance tests in accordance with specific standards.<\/p>\n\n

    \n
  • These certificates state:<\/li>\n\n\n\n
  • Fire resistance time<\/li>\n\n\n\n
  • Behavior in the presence of flames, heat, and smoke<\/li>\n\n\n\n
  • The durability of the self-closing system<\/li>\n\n\n\n
  • The regulations applied in the tests<\/li>\n<\/ul>\n\n

    European EI Certification for Metal Fire Doors<\/h2>\n\n

    The European EI certification<\/strong> is one of the most widely used certifications in Europe for fire doors<\/strong>.<\/p>\n\n

      \n
    • E (Integrity):<\/strong> The door prevents the passage of flames and hot gases<\/li>\n\n\n\n
    • I (Insulation)<\/strong>: limits heat transfer to the unexposed side<\/li>\n\n\n\n
    • EI2<\/strong>: indicates that the door has been tested from both sides<\/li>\n\n\n\n
    • 30, 60, 90, or 120 minutes<\/strong>: fire resistance time<\/li>\n<\/ul>\n\n

      Example: EI2 60 MN<\/strong>, a common rating for certified metal fire doors<\/strong>.<\/p>\n\n

      CE Marking on Fire Doors<\/h2>\n\n

      The CE marking<\/strong> is mandatory for the sale of fire doors<\/strong> in the European Union.<\/p>\n\n

        \n
      • This label certifies that the door:<\/li>\n\n\n\n
      • Complies with the EN 16034 standard<\/li>\n\n\n\n
      • It has passed official laboratory tests<\/li>\n\n\n\n
      • It is manufactured under a factory production control system<\/li>\n\n\n\n
      • It includes a Declaration of Performance (DoP)<\/li>\n<\/ul>\n\n

        The CE marking guarantees that the product complies with European safety regulations.<\/p>\n\n

        Identification and Traceability of Metal Fire Doors<\/h2>\n\n

        All certified metal fire doors<\/strong> must be identified with a visible label that includes key information such as:<\/p>\n\n

          \n
        • Fire Resistance Rating<\/li>\n\n\n\n
        • Dimensions<\/li>\n\n\n\n
        • Applicable Certificates<\/li>\n\n\n\n
        • Manufacturer’s Information<\/li>\n<\/ul>\n\n

          At Asturmadi Doors<\/strong>, doors are identified using laser-printed labels with QR codes<\/strong>, which allow for complete product traceability even years after they are manufactured.<\/p>\n\n

          Meaning of the C5 classification<\/h2>\n\n

          In addition to fire resistance, fire doors are certified for the durability of their self-closing mechanism<\/strong>.<\/p>\n\n

            \n
          • C5 indicates <\/strong>a service life of 200,000 opening and closing cycles<\/strong>, ensuring the door functions properly throughout its entire service life.<\/li>\n<\/ul>\n\n

            This is a key consideration in buildings where doors are used extensively.<\/p>\n\n

            The Importance of Choosing Certified Metal Door Manufacturers<\/h2>\n\n

            Choosing a manufacturer of metal fire doors<\/strong> with multiple certifications ensures:<\/p>\n\n

              \n
            • Regulatory Compliance<\/li>\n\n\n\n
            • Real Safety in the Event of a Fire<\/li>\n\n\n\n
            • Consistent product quality<\/li>\n\n\n\n
            • Long-term reliability<\/li>\n<\/ul>\n\n

              Certifications reflect a manufacturing process that is controlled and audited on a regular basis.<\/p>\n\n

              UL Certification for Fire Doors (UL 10B and UL 10C)<\/strong><\/h2>\n\n

              UL<\/strong> (Underwriters Laboratories) certification<\/strong> is one of the most internationally recognized certifications for fire doors<\/strong>, particularly in industrial and building projects that adhere to U.S. safety standards.<\/p>\n\n

              In the case of metal fire doors<\/strong>, there are two particularly common UL tests:<\/p>\n\n

              UL 10B \u2013 Fire Resistance Test<\/h2>\n\n

              The UL 10B certification<\/strong> evaluates the door’s fire resistance<\/strong> when exposed to high temperatures according to a standardized fire curve.<\/p>\n\n

              During this test, it is verified that the fire door<\/strong>:<\/p>\n\n

                \n
              • It maintains its structural integrity<\/li>\n\n\n\n
              • Prevents the passage of flames for the certified duration<\/li>\n\n\n\n
              • It retains its function as a partitioning element<\/li>\n<\/ul>\n\n

                UL 10B doors<\/strong> are classified based on their fire resistance rating, such as UL 90, UL 120, and UL 180 minutes<\/strong>.<\/p>\n\n

                UL 10C \u2013 Fire Resistance and Positive Pressure Test<\/h2>\n\n

                The UL 10C certification<\/strong> is an evolution of the UL 10B and is currently the most stringent and widely used<\/strong>.<\/p>\n\n

                In addition to fire resistance, UL 10C<\/strong> evaluates the door’s performance under positive pressure<\/strong>, simulating the actual conditions of a modern fire, where hot gases exert pressure on the door leaf and frame.<\/p>\n\n

                This test verifies that the metal fire door<\/strong>:<\/p>\n\n

                  \n
                • Withstands fire under pressure<\/li>\n\n\n\n
                • It maintains its seal against hot gases<\/li>\n\n\n\n
                • It offers greater reliability in real-life fire situations<\/li>\n<\/ul>\n\n

                  HOSE Test (Hose Stream Test)<\/h2>\n\n

                  HOSE test<\/strong>, or Hose Stream Test<\/strong>.<\/p>\n\n

                  This test involves directing a high-pressure stream of water<\/strong> at the door immediately after the thermal test, simulating the intervention of firefighting services.<\/p>\n\n

                  The purpose of the Hose Test<\/strong> is to verify that the door:<\/p>\n\n

                    \n
                  • It maintains its structural integrity<\/li>\n\n\n\n
                  • It doesn’t collapse or open<\/li>\n\n\n\n
                  • It continues to act as a barrier against fire<\/li>\n<\/ul>\n\n

                    Passing this test confirms that the UL-certified fire door<\/strong> is capable of withstanding both fire and the thermal and mechanical impacts of fire suppression.<\/p>\n\n

                    Importance of UL 10B, UL 10C, and the Hose Test<\/h2>\n\n

                    Fire doors certified to UL 10B or UL 10C and HOSE-tested<\/strong> are especially recommended for:<\/p>\n\n

                      \n
                    • International Projects<\/li>\n\n\n\n
                    • Industrial Facilities<\/li>\n\n\n\n
                    • Buildings that comply with U.S. or international codes<\/li>\n\n\n\n
                    • High-risk environments<\/li>\n<\/ul>\n\n

                      These certifications ensure a higher level of safety and reliable performance under real-world fire conditions.<\/p>\n\n

                      This certification is particularly important for international projects or buildings that require global safety standards. If you need certified metal fire doors<\/strong> for your project, contact our technical team, and we\u2019ll advise you on how to meet all regulatory requirements.<\/p>\n","protected":false},"excerpt":{"rendered":"

                      Certified metal fire doors are a key component of fire safety in any building. Fire-rating certificates guarantee that the doors have been tested and comply with current regulations regarding fire resistance, smoke control, and durability. Having certified fire doors is not only a legal requirement in many cases, but also a guarantee of protection for […]<\/p>\n","protected":false},"author":1,"featured_media":3401,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[81],"tags":[],"class_list":["post-3399","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fire-rated-doors-certifications"],"acf":[],"_links":{"self":[{"href":"https:\/\/asturmadidoors.com\/en\/wp-json\/wp\/v2\/posts\/3399","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/asturmadidoors.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/asturmadidoors.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/asturmadidoors.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/asturmadidoors.com\/en\/wp-json\/wp\/v2\/comments?post=3399"}],"version-history":[{"count":0,"href":"https:\/\/asturmadidoors.com\/en\/wp-json\/wp\/v2\/posts\/3399\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/asturmadidoors.com\/en\/wp-json\/wp\/v2\/media\/3401"}],"wp:attachment":[{"href":"https:\/\/asturmadidoors.com\/en\/wp-json\/wp\/v2\/media?parent=3399"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/asturmadidoors.com\/en\/wp-json\/wp\/v2\/categories?post=3399"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/asturmadidoors.com\/en\/wp-json\/wp\/v2\/tags?post=3399"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}