On the plans, you read “1\u00bd h fire door” or “3 h protected opening”. But what does that mean concretely, and how do you know which rating you need? A short guide for managers, contractors and architects.<\/p>\n
The basic principle: the door protects an opening cut into a fire separation<\/strong>. The building code sets the wall’s required resistance based on its use (party wall, exit, mechanical room, parking garage…), and the door’s rating follows from it. As a general rule, openings in a rated wall require protection from \u00be h to 3 h, and listed doors go up to 4 h.<\/p>\n Important: the achievable rating depends on the wall type and mounting<\/strong> \u2014 the same door does not deliver the same rating on masonry, steel or rated drywall. The UL\/ULC listings spell all of this out.<\/p>\n Some openings also require smoke control (“S” label, UL 1784 standard). Models like the Cornell ERD11 with SmokeShield add gaskets that block smoke migration in addition to flames.<\/p>\n A fire door must be inspected and drop-tested every year<\/a> per NFPA 80 \u2014 otherwise the protection is only theoretical.<\/p>\n Send us the spec section or the wall type: we recommend the listed door that fits, install it and test it. See our fire-rated line<\/a> or request a quote<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":" \u00be h, 1\u00bd h, 3 h, 4 h: understanding rolling door fire-resistance ratings, and how the wall type determines the achievable rating.<\/p>\n","protected":false},"author":8,"featured_media":9509,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[19],"tags":[],"class_list":["post-9914","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/www.portedegarageandre.com\/en\/wp-json\/wp\/v2\/posts\/9914","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.portedegarageandre.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.portedegarageandre.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.portedegarageandre.com\/en\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.portedegarageandre.com\/en\/wp-json\/wp\/v2\/comments?post=9914"}],"version-history":[{"count":1,"href":"https:\/\/www.portedegarageandre.com\/en\/wp-json\/wp\/v2\/posts\/9914\/revisions"}],"predecessor-version":[{"id":9915,"href":"https:\/\/www.portedegarageandre.com\/en\/wp-json\/wp\/v2\/posts\/9914\/revisions\/9915"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.portedegarageandre.com\/en\/wp-json\/wp\/v2\/media\/9509"}],"wp:attachment":[{"href":"https:\/\/www.portedegarageandre.com\/en\/wp-json\/wp\/v2\/media?parent=9914"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.portedegarageandre.com\/en\/wp-json\/wp\/v2\/categories?post=9914"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.portedegarageandre.com\/en\/wp-json\/wp\/v2\/tags?post=9914"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Common ratings for rolling doors<\/h2>\n
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Fire\u2026 and smoke<\/h2>\n
And after installation?<\/h2>\n
We handle compliance<\/h2>\n