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  1. #1
    loren cossette's Avatar
    loren cossette Guest

    Default insulating and dropping bonus room ceiling from 13' to 9' over living space

    Should read under living space.
    what codes do i need to be aware of?

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    Last edited by loren cossette; 08-06-2012 at 09:04 AM. Reason: should have read under living space
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  2. #2
    Join Date
    May 2012
    Location
    Western Maryland
    Posts
    131

    Default Re: insulating and dropping bonus room ceiling from 13' to 9' over living space

    Are you moving any wiring or smoke detectors?
    Are you going to be changing or covering any windows or exterior openings?
    Are you going to be blocking an attic access?
    Are you installing a drop ceiling or a 'hard' ceiling with new framing?
    What are you doing with the old ceiling and insulation? Will you be insulating the 4' of walls in between the new and old ceilings? Are you planning to vent the space between the 2 ceilings?

    Mark Fisher
    Allegany Inspection Service - Cumberland MD 21502 - 301-722-2224
    Home Inspections, Mold Testing, Thermal Imaging

  3. #3
    loren cossette's Avatar
    loren cossette Guest

    Default Re: insulating and dropping bonus room ceiling from 13' to 9' over living space

    Quote Originally Posted by Mark Fisher View Post
    Are you moving any wiring or smoke detectors?
    Are you going to be changing or covering any windows or exterior openings?
    Are you going to be blocking an attic access?
    Are you installing a drop ceiling or a 'hard' ceiling with new framing?
    What are you doing with the old ceiling and insulation? Will you be insulating the 4' of walls in between the new and old ceilings? Are you planning to vent the space between the 2 ceilings?
    electrician moved smoke detector.
    hard ceiling. 24' center 2x4, plan on using 5/8 wallboard for ceiling.


  4. #4
    loren cossette's Avatar
    loren cossette Guest

    Default Re: insulating and dropping bonus room ceiling from 13' to 9' over living space

    Quote Originally Posted by loren cossette View Post
    electrician moved smoke detector.
    hard ceiling. 24' center 2x4, plan on using 5/8 wallboard for ceiling.
    old ceiling has unfaced ins,walls to be ins.


  5. #5
    Join Date
    May 2012
    Location
    Western Maryland
    Posts
    131

    Default Re: insulating and dropping bonus room ceiling from 13' to 9' over living space

    Quote Originally Posted by loren cossette View Post
    Should read under living space.
    What do you mean? What is above the ceiling - conditioned or unconditioned space?

    You didn't give room dimensions, and I don't have my span tables handy, but using 2x4 joists on 24" centers, especially with 5/8's drywall, means a very short span.

    You are essentially changing the location of the thermal boundary of the building envelope. You need to take this into account when deciding how and where to insulate, how and where to ventilate, and how and where to air-seal. I'll leave the code references to others, but these are the areas that I see screwed up more often than not.

    Mark Fisher
    Allegany Inspection Service - Cumberland MD 21502 - 301-722-2224
    Home Inspections, Mold Testing, Thermal Imaging

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