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fire rating.

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Weezbo
Weezbo Member Posts: 6,232
in THE MAIN WALL
and out in the "field" on incinerators there was some reinforced material like a wet blanket i am wondering if it is still available . it can be used to wrap vents and has fire ratings.

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  • Brad White_9
    Brad White_9 Member Posts: 2,440
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    Yeah it's called asbestos :)

    Actually you may be thinking of FyreWrap or Pabco. Expensive stuff...

    We specify for a generic product, calcium silicate with a trowelled cement jacket over chicken wire. That is the "wet" part missing from the first two wraps I mentioned.
  • Weezbo
    Weezbo Member Posts: 6,232
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    Brad is it still available an is it permissable to use it

    permissable to use it still? i need something with a high fire rating to go under a wall that may have a 3 hr fire rating between spaces.
  • Douglas Hicks
    Douglas Hicks Member Posts: 69
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    3M Fire Barrier Wrap Products - Brochure http://products3.3m.com/catalog/us/en001/architecture_construction/fire_protection/node_GSJ13DVVMLbe/root_GST1T4S9TCgv/vroot_634B6SPTJMge/gvel_3LPCLC0PX0gl/theme_us_fireprotectionproducts_3_0/command_AbcPageHandler/output_html

    Rated to be used on Type 1 Exhaust ducts. Not cheap.

    Others also have duct wrap available.
  • Brad White_126
    Brad White_126 Member Posts: 12
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    No, it is not still permited to my knowlege

    I was just Weazing Teasebo. :)

    What you will need is a bona-fide UL detail for fire rating. The standard number escapes me but UL 263 sounds familiar as does 555 (fire dampers, anyway).

    What you seem to be describing is an MFL (Maximum Fire Loss) wall where penetrations can only occur within so many feet of the floor (none high) and even piping and valves have ratings.

    I have used FyreWrap which looks like foil-faced white fiber insulation held in place with metal bands.

    http://www.fyrewrap.com/

    I see that it comes in a 1.5 and 2.0 hour rating. Not sure if doubling it is permissible.

    Sorry, Weezbo, not much more to offer you! You may call an architect local to you.

    Brad
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