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    Firewall questions

    Firewall questions

    New postby Marc M on Tue Feb 16, 2010 3:15 pm

    Jerry, do exterior water heater closets when attached to the main structure have a 1 hour rated encloser like garages?
    What about furnace closets?
    Marc M
     
    Posts: 173
    Joined: Sat May 09, 2009 10:24 am

    Re: Firewall questions

    New postby Jerry Peck - Codeman on Tue Feb 16, 2010 7:09 pm

    Hi Marc,

    Nope, not for either.

    Then, unless California specifically states that garages are required to have a 1 hour wall, neither do garages - they only require "separation" which consists of a minimum of 1/2 inch gypsum board on the garage side.

    A "1 hour fire-resistance rated" wall would require 5/8 inch Type X on both sides of the wall as well as a (typically anyway) 20 minute rated door which would include being self-closing and self-latching, along with other requirements.
    Jerry Peck - CodeMan
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    Return to Drywall / gypsum board: non-fire resistance rated; Type X fire-resistance rated; plaster board (blue board); rock lath (for plastering); exterior gypsum sheathing



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