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  1. #1
    Join Date
    Jun 2008
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    2

    Default Insulation for bay window

    I have a 115 yr old house that has a bay window. I replaced the windows but there is still a lot of air leakage in the winter. What is the best way to insulate?

  2. #2
    Join Date
    Aug 2007
    Location
    The Great White North
    Posts
    4,045

    Default Re: Insulation for bay window

    I'm guessing you are having drafts around the window and the wall ?

    If so ..... then carefully remove the molding around the window and use spray foam in a can to fill the gap between the window frame and the wall framing.



    Hopefully this helps.
    "" an ounce of perception -- a pound of obscure "
    - Rush

  3. #3
    Join Date
    Jan 2008
    Location
    Lakeland ,MN
    Posts
    356

    Default Re: Insulation for bay window

    Quote Originally Posted by canuk View Post
    I'm guessing you are having drafts around the window and the wall ?

    If so ..... then carefully remove the molding around the window and use spray foam in a can to fill the gap between the window frame and the wall framing.



    Hopefully this helps.
    I would say the same thing Canuk has said.only I would add make sure you use the spray foam that is specifically used for around windows. The foam for windows does not over expand and make the window to tight open and close.
    Harry

  4. #4
    Join Date
    Jun 2008
    Posts
    2

    Default Re: Insulation for bay window

    I would like to avoid possibly destroying the plaster walls. Could I achieve the same results by doing this from the outside?

  5. #5
    Join Date
    Aug 2007
    Location
    The Great White North
    Posts
    4,045

    Default Re: Insulation for bay window

    Ravens53 ... good point regarding expanding foam.

    Basically there are 3 types available in a can for consumers:
    1. low expansion
    2. medium expansion
    3. high expansion

    with high expansion types apply what's looks to be not enough because some will expand 10 times it's volume.


    Could I achieve the same results by doing this from the outside?
    Yep ... remove the molding around the outside and apply the foam.
    However ... doing it from the outside means that you need to make sure to seal the molding around the window with caulk. Otherwise you will have moisture issues ... that's why it's generally done from the inside.


    Hopefully this helps.
    "" an ounce of perception -- a pound of obscure "
    - Rush

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