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  1. #1
    john trimpi's Avatar
    john trimpi Guest

    Default In wall insulation

    Southern Ca. home with no in wall insulation.
    What kind of insulation is best use in exterior walls that are not insulated with out removing interior dry wall ?

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  2. #2
    Join Date
    Mar 2007
    Location
    Spring Hill (Nashville), TN
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    5,851

    Default Re: In wall insulation

    Quote Originally Posted by john trimpi View Post
    Southern Ca. home with no in wall insulation.
    What kind of insulation is best use in exterior walls that are not insulated with out removing interior dry wall ?
    About your only option is going to be the spray foams or maybe spray cellulose. Holes are made in every stud bay and it is sprayed in.

    Scott Patterson, ACI
    Spring Hill, TN
    www.traceinspections.com

  3. #3
    john trimpi's Avatar
    john trimpi Guest

    Default Re: In wall insulation

    Thanks Scott. Is one better then the other?


  4. #4
    Join Date
    Feb 2009
    Location
    Southern Vancouver Island
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    4,607

    Default Re: In wall insulation

    Urea formaldadyde was found to be very bad when it was curing in people's walls. I doubt that you find anyone using it in the Golden State.
    Cellulose is used fairly often for insulating old walls in my area.

    John Kogel, RHI, BC HI Lic #47455
    www.allsafehome.ca

  5. #5
    john trimpi's Avatar
    john trimpi Guest

    Default Re: In wall insulation

    Thanks John.


  6. #6
    Join Date
    Mar 2007
    Location
    Fletcher, NC
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    28,032

    Default Re: In wall insulation

    Quote Originally Posted by John Kogel View Post
    Urea formaldadyde was found to be very bad when it was curing in people's walls. I doubt that you find anyone using it in the Golden State.
    Cellulose is used fairly often for insulating old walls in my area.
    If there are any leaks or moisture accumulation within the wall ... you will wish you had used spray foam and not cellulose ... just something to think about as cellulose WILL HOLD MOISTURE and WILL SUPPORT the growth of that stuff most people freak out over ... "mold".

    Jerry Peck
    Construction/Litigation/Code Consultant - Retired
    www.AskCodeMan.com

  7. #7
    Bob Spermo's Avatar
    Bob Spermo Guest

    Default Re: In wall insulation

    The other option is a dense pack cellulose at 3.5 lbs/cu ft.


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