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Altering a fire door

Discussion in 'Door & Hardware forum *Sponsored by Allegion' started by Robert, Apr 24, 2019.

  1. Robert

    Robert Sawhorse

    Jan 29, 2016
    Likes Received:
    I am trying to match existing door profiles in a residential project. The existing doors have wider stiles and rails then what I am finding in rated 90 minute door profiles. Can I order a 90 minute flush door and add 3/4" wood "stiles" and "rails" to one face of it without voiding the rating? This wood create a thicker door and I just want to be sure adding to it will not nullify the UL label. Thanks in advance.
  2. LGreene

    LGreene Sawhorse
    Staff Member

    Oct 20, 2009
    Likes Received:
    Hi Robert -

    It depends on what the door manufacturer's listings will allow. For example, Steelcraft (one of our brands that makes hollow metal doors) allows applied trim of certain materials up to a certain dimension. I think it also specifies how the trim has to be attached. This is not covered by the model codes or standards - you need to ask the door manufacturer what is acceptable.

    - Lori
  3. ADAguy

    ADAguy Sawhorse

    Sep 11, 2013
    Likes Received:
    untested alterations to labeled frames may void the certification.

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