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Fire Blocking at flush baseboard trim

Discussion in 'Residential Fire Codes' started by rentastic, Feb 16, 2017.

  1. rentastic

    rentastic New Member

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    Hello - We're working on a modern design 4-unit R-2 building. We'd like to do a flush baseboard trim or 'museum' 3/4" z-mold trim at the base. With these two trim types, we're unable to extend our fire-rated gyp. bd. down to the floor, thus breaking our fire stop. Has anyone dealt with this type of detail before in a fire-rated wall, and if so how did they accomplish the fire-rating? Does a fire-rated z-mold exist? We might have to default to an applied baseboard, but we'd like to do something crisper if possible. Any insight would be great!

    Thanks
     
  2. FLSTF01

    FLSTF01 Sawhorse

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    As this is a four-family, it is commercial, not residential.

    That being said, the answer will depend on the fire rating required and the ratings of different materials available. On the surface, I am not crazy about the scenario you are proposing, but I'm old school.
     
  3. rentastic

    rentastic New Member

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    Thanks. I've posted this in the commercial section as well.
     
  4. steveray

    steveray Sawhorse

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    That explains my confusion....As I thought I already responded to this...
     
  5. Builder Bob

    Builder Bob Sawhorse

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    Sprinkler building should allow 30 min tenant separations thus should not be a problem with calculated fire resistance in chapter 7.
     
  6. Bruce Ring CWW

    Bruce Ring CWW New Member

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    Light guage Z mold is available at most metal framing supply stores
     
  7. ADAguy

    ADAguy Sawhorse

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    Sounds as if you don't have sprinklers?
     
  8. JPohling

    JPohling Sawhorse

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    2 layers of gyp
     
  9. Francis Vineyard

    Francis Vineyard Sawhorse

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    A drawing would further clarify the issue; perhaps one of these fireblock systems (BW-S-0001, 0002 or 0023) may help with the details:
    https://www.hilti.com/search?text=bw-s-0001
    Base Wall Stop.PNG
     

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