+ Reply to Thread
Page 1 of 2 12 LastLast
Results 1 to 10 of 11
  1. #1
    Join Date
    Feb 2010
    Location
    clio,mi.
    Posts
    5

    Default sagging wall insulation

    Is there any way to repair sagging wall insulation.

  2. #2
    Join Date
    Dec 2007
    Location
    MN
    Posts
    455

    Default Re: sagging wall insulation

    How do you know it's sagging?

  3. #3
    Join Date
    Jun 2007
    Location
    Shamokin, Pa.
    Posts
    645

    Default Re: sagging wall insulation

    Quote Originally Posted by bsum1 View Post
    How do you know it's sagging?
    I was wondering that very same thing.
    Great minds think alike.

  4. #4
    Join Date
    Mar 2009
    Posts
    1,387

    Default Re: sagging wall insulation

    Howdy turn the house upside down and shake it real hard. Hope it made you laugh. Is it cellulose?

  5. #5
    Join Date
    Feb 2010
    Location
    clio,mi.
    Posts
    5

    Default Re: sagging wall insulation

    during a energy audit in 2008. The energy contracter while using a infared camara showed us the sagging or poorly installed bat insulation on our exterior walls, Also the poorly framed windows. Our house was the first one the building contracter had built. The poor frameing quality and lack of detail can not be seen from the outside. It is when it gets cold outside and the wind starts to blow that the lack of quality really comes through.

  6. #6
    Join Date
    Mar 2009
    Posts
    1,387

    Default Re: sagging wall insulation

    Howdy you could blow in some cellulose which will require hole repairs in the walls or adding wall trim.

  7. #7
    Join Date
    Jun 2007
    Location
    Shamokin, Pa.
    Posts
    645

    Default Re: sagging wall insulation

    Quote Originally Posted by Timothy Miller View Post
    Howdy you could blow in some cellulose which will require hole repairs in the walls or adding wall trim.
    Sounds like a great plan. You might think about drilling holes and then spray foaming said voids.

  8. #8
    Join Date
    Feb 2010
    Location
    clio,mi.
    Posts
    5

    Default Re: sagging wall insulation

    If you blow insulation in won"t you lose your vapor barrier?

  9. #9
    Join Date
    Aug 2007
    Location
    The Great White North
    Posts
    4,045

    Default Re: sagging wall insulation

    I don't think the infrared scan revealed sagging insulation so much as compressed and / or gaps ---- regardless it showed the insulation wasn't correctly installed.

    Hard to say if blowing cellulose into the wall cavities is the answer. By blowing in cellulose it would compress the existing batts which negates it's function.
    Batt insulation relies on the air space within it's construction to be able to perform it's function --- that's why it should always be puffy and not compressed when installed.

    Blowing in insulation will compress the batts which means the batts will have almost no R value to contribute. The compressed batts would take up space reducing the volume within the stud cavity not allowing a desirable amount of blown in insulation ---- you may end up with less R value.

    This might leave one of 3 options ......

    - remove the interior drywall and correct the existing insulation and vapour barrier.

    or ....

    - apply rigid foam to the exterior of the home

    or ....

    apply rigid foam to the interior walls


    2 cents worth.
    "" an ounce of perception -- a pound of obscure "
    - Rush

  10. #10
    Join Date
    Feb 2010
    Location
    Eastern MA
    Posts
    75

    Default Re: sagging wall insulation

    You need to do what is called dense pack cellulose. It involves inserting a small diameter hose, like a 1 inch diameter attached to the 2 inch diameter hose from the machine, all the way into the wall. What you are looking for is dense packed cellulose to stop air movement. Yes, you lose R-value by compressing either the fibeglass or cellulose, but it is more important to stop air movement. Not every contractor can or will do this, so it is important to ask and make sure.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •