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  1. #1
    Stephen G Sheldon's Avatar
    Stephen G Sheldon Guest

    Default Discoloration of window

    Does anyone know what might be the cause of the bluish, red, and purple discoloration which appears at the center of this fixed pane double glazed window? Its tough to see from this picture but if you zoom in you should be able to see it. Thanks for any help you may be able to provide.

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  2. #2
    Join Date
    Apr 2007
    Location
    WESTMINSTER CO
    Posts
    1,090

    Default Re: Discoloration of window

    steve

    many terms used

    failed insulated glass
    fogged insulated glass

    but the seal looks like it has failed

    cvf


  3. #3
    Join Date
    Feb 2009
    Location
    Southern Vancouver Island
    Posts
    4,549

    Default Re: Discoloration of window

    Could it be a film, or a coating on the outer pane? It doesn't look like normal fog between the panes to me.

    Last edited by John Kogel; 06-08-2011 at 09:25 PM.
    John Kogel, RHI, BC HI Lic #47455
    www.allsafehome.ca

  4. #4
    Join Date
    Oct 2010
    Location
    Southwest US
    Posts
    585

    Default Re: Discoloration of window

    It's early stages of seal failure with low-e glass. The interior metallic coating is basically corroding. I would call it out as a failed seal.


  5. #5
    Join Date
    Mar 2007
    Location
    Plano, Texas
    Posts
    4,170

    Default Re: Discoloration of window

    Some of the low E windows have a film suspended between the glass, though typically on higher end windows. That looks like a typical builder grade unit though so it may just be a failed seal.
    Whatever the cause, the remedy is the same if it is between the panes. Replace it.

    Jim Luttrall
    www.MrInspector.net
    Plano, Texas

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