{"id":3521,"date":"2025-08-27T17:39:53","date_gmt":"2025-08-27T17:39:53","guid":{"rendered":"https:\/\/www.sehgaldoor.com\/blog\/?p=3521"},"modified":"2026-02-20T08:24:47","modified_gmt":"2026-02-20T08:24:47","slug":"fire-resistant-door-specifications-a-complete-guide","status":"publish","type":"post","link":"https:\/\/www.sehgaldoor.com\/blog\/fire-resistant-door-specifications-a-complete-guide\/","title":{"rendered":"Fire Resistant Door Specifications: A Complete Guide"},"content":{"rendered":"<h1 class=\"wp-block-heading\"><strong>Specifications, Standards, and key features<\/strong><\/h1>\n<p>Fire safety is one of the most crucial aspects of modern construction, whether it\u2019s a hospital, metro station, office building, or residential complex. Among the many safety installations, <strong>fire resistant doors<\/strong> play a critical role in protecting lives and property. These specially engineered doors not only withstand fire for a defined duration but also restrict the spread of smoke and flames, allowing safe evacuation.<\/p>\n<p>In this blog, we\u2019ll explore the <strong>specifications, standards, and key features<\/strong> of fire resistant doors.<\/p>\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n<h2 class=\"wp-block-heading\">1. Definition and Purpose<\/h2>\n<p>A <strong>fire resistant door FRD<\/strong> is a door assembly built to resist the passage of fire, smoke, and hot gases for a specified time. Its purpose is to:<\/p>\n<ul class=\"wp-block-list\">\n<li>Provide safe evacuation routes.<\/li>\n<li>Contain fire within a compartment.<\/li>\n<li>Reduce damage to property.<\/li>\n<li>Help firefighters control the spread.<\/li>\n<\/ul>\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n<h2 class=\"wp-block-heading\">2. Fire Rating and Standards<\/h2>\n<p>Fire doors are classified by the <strong>duration of fire resistance<\/strong> they provide, usually tested as per IS:3614 (Part 2) and NBC 2016 in India, or international standards like BS 476 and EN 1634.<\/p>\n<ul class=\"wp-block-list\">\n<li><strong>30 minutes (FD 30)<\/strong> \u2013 Common in residential and small commercial projects.<\/li>\n<li><strong>60 minutes (FD 60)<\/strong> \u2013 Used in corridors, staircases, and escape routes.<\/li>\n<li><strong>90 minutes (FD 90)<\/strong> \u2013 Required in high-risk areas like industrial units.<\/li>\n<li><strong>120 minutes (FD 120)<\/strong> \u2013 For critical applications such as refineries, data centers, metros, and hospitals.<\/li>\n<\/ul>\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n<h2 class=\"wp-block-heading\">3. Core Materials<\/h2>\n<p>The performance of fire doors depends on the <strong>infill core<\/strong> and materials used:<\/p>\n<ul class=\"wp-block-list\">\n<li><strong>Steel or Galvanized Iron Sheets<\/strong> (outer skin).<\/li>\n<li><strong>Fire-rated core materials<\/strong> such as:\n<ul class=\"wp-block-list\">\n<li>Vermiculite boards<\/li>\n<li>Mineral wool<\/li>\n<li>Ceramic insulation boards<\/li>\n<li>Fire-retardant honeycomb structure<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n<h2 class=\"wp-block-heading\">4. Construction Specifications<\/h2>\n<ul class=\"wp-block-list\">\n<li><strong>Thickness<\/strong>: Typically ranges between 46 mm \u2013 56 mm.<\/li>\n<li><strong>Frame<\/strong>: Pressed steel or hardwood with intumescent seals.<\/li>\n<li><strong>Shutters<\/strong>: Double skin sheet with reinforced stiffeners.<\/li>\n<li><strong>Vision Panel (if provided)<\/strong>: Made of <strong>fire-rated glass<\/strong> with tested glazing beading.<\/li>\n<li><strong>Finish<\/strong>: Powder coating or polyurethane paint.<\/li>\n<\/ul>\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n<h2 class=\"wp-block-heading\">5. Hardware Requirements<\/h2>\n<p>All hardware used must be <strong>fire-rated<\/strong>:<\/p>\n<ul class=\"wp-block-list\">\n<li>Hinges: Stainless steel ball bearing type.<\/li>\n<li>Locks & Latches: Tested for fire performance.<\/li>\n<li>Door Closers: Must ensure automatic closing.<\/li>\n<li>Panic Bars: Required in public buildings for emergency exit.<\/li>\n<li>Smoke Seals & Intumescent Strips: Expand under heat to seal gaps.<\/li>\n<\/ul>\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n<h2 class=\"wp-block-heading\">6. Testing & Certification<\/h2>\n<p>A genuine fire door must be:<\/p>\n<ul class=\"wp-block-list\">\n<li><strong>Tested at an accredited lab<\/strong> (e.g., ISI, CBRI Roorkee, NABL, HTB, etc.).<\/li>\n<li><strong>Supplied with a test certificate<\/strong> mentioning the fire rating.<\/li>\n<li><strong>Marked\/Tagged<\/strong> with manufacturer details and rating.<\/li>\n<\/ul>\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n<h2 class=\"wp-block-heading\">7. Installation Guidelines<\/h2>\n<p>Even the best fire-rated door is ineffective if not installed properly. Some key guidelines are:<\/p>\n<ul class=\"wp-block-list\">\n<li>Fixing with anchor fasteners into the wall.<\/li>\n<li>Gap between frame and wall filled with fire-rated sealant.<\/li>\n<li>Hardware fitted without drilling into the fire core.<\/li>\n<li>Regular inspection and maintenance.<\/li>\n<\/ul>\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n<h2 class=\"wp-block-heading\">8. Applications<\/h2>\n<ul class=\"wp-block-list\">\n<li>Metro Stations<\/li>\n<li>Hospitals & Laboratories<\/li>\n<li>IT Parks & Data Centers<\/li>\n<li>Shopping Malls & Airports<\/li>\n<li>Industrial Units & Warehouses<\/li>\n<li>High-rise Residential Buildings<\/li>\n<\/ul>\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n<p>Fire resistant doors are not just a regulatory requirement but a <strong>life-saving investment<\/strong>. By choosing doors that comply with NBC 2016, IS 3614, or equivalent standards, and ensuring certified hardware and professional installation, builders and owners can significantly enhance the fire safety of their premises.<\/p>\n<p>At <strong>Sehgal Doors<\/strong>, we specialize in manufacturing and supplying <strong>tested & certified fire resistant doors<\/strong>, ensuring compliance with national and international standards.<\/p>\n<p>For more details or to request a quotation, visit <a href=\"http:\/\/www.sehgaldoors.com\/\">www.sehgaldoors.com<\/a>. and +919891139441<\/p>\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n","protected":false},"excerpt":{"rendered":"<p>Specifications, Standards, and key features Fire safety is one of the most crucial aspects of modern construction, whether it\u2019s a hospital, metro station, office building, or residential complex. Among the many safety installations, fire resistant doors play a critical role in protecting lives and property. These specially engineered doors not only withstand fire for a [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3521","post","type-post","status-publish","format-standard","hentry","category-acoustic-dry-wall-panel"],"_links":{"self":[{"href":"https:\/\/www.sehgaldoor.com\/blog\/wp-json\/wp\/v2\/posts\/3521","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sehgaldoor.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sehgaldoor.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sehgaldoor.com\/blog\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sehgaldoor.com\/blog\/wp-json\/wp\/v2\/comments?post=3521"}],"version-history":[{"count":3,"href":"https:\/\/www.sehgaldoor.com\/blog\/wp-json\/wp\/v2\/posts\/3521\/revisions"}],"predecessor-version":[{"id":3657,"href":"https:\/\/www.sehgaldoor.com\/blog\/wp-json\/wp\/v2\/posts\/3521\/revisions\/3657"}],"wp:attachment":[{"href":"https:\/\/www.sehgaldoor.com\/blog\/wp-json\/wp\/v2\/media?parent=3521"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sehgaldoor.com\/blog\/wp-json\/wp\/v2\/categories?post=3521"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sehgaldoor.com\/blog\/wp-json\/wp\/v2\/tags?post=3521"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}