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Thread: Bay Window Help

  1. #1
    Join Date
    Apr 2012
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    Smile Bay Window Help

    Around 35 years ago my parents added an extension on the house. They included a Pella bay window. Over the last ten years or so my fathers health started failing and he did little maintenance on the house. I was doing a general inspection on the house recently and noticed where the bottom of the bay window is in need of major work. It appears that the wood which rests on the dog legs (I think thatís what theyíre called) is all rotted out. In some areas it feels more like a sponge than a piece of wood.

    How do I go about replacing this bottom piece of wood?

    What type of wood should I use?

    Is it one piece or 3 pieces?

    I was told that when I weather proof the new piece of wood, that it takes several months to Ďageí is that true. Then I guess I can paint it. I tried contacting Pella but they wonít help at all. Everything else about the window is in great shape. Any advice on how to proceed would be greatly appreciated. Iíve included a few pictures below so you could see what I what Iím talking about. Thanks!









  2. #2
    Join Date
    Jun 2010
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    Chicago
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    Default Re: Bay Window Help

    Unfortunately, it looks like the rot got into the frames, which makes that a pretty big job. You'd only need to let a piece of pressure treated wood 'age' before painting it. It might be possible to replace the bottom of the bay if you can save the frame of the window (not the sash, but the sill) - hard to tell from the photo how far in the rot goes - the bottom plate looks like it has old rot which has been painted over. Also depends upon whether the whole thing is a pre-fab unit, tends to make it harder.

  3. #3
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    Red face Re: Bay Window Help

    Quote Originally Posted by ChicagoCooperator View Post
    the bottom plate looks like it has old rot which has been painted over.
    Correct.

    I have since learned that Pella was sued in a class action lawsuit because of these bay windows. Seems they all rotted out. Pella won't help me and just blames the wood company, which I think is very unprofessional of them. I need more windows for my house and they won't be Pella, simply because of their "attitude". The attorney said the window could be one of three types; Proline, Designer, or Architect. Pella won't tell me which one it is, but a contractor installed it when the room was built if that helps. I have a window part number (2060-4860-2060-CC3R) but no way to look it up. Pella has renamed all their older windows to cover their tracks. I'm just looking for a way to get it fixed before it does damage to the whole side of the house

  4. #4
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    Default Re: Bay Window Help

    From the photos, it looks like the roof is resting on the vertical frame, the vertical frame is resting on the base frame. But it's hard to see if the window is 1 piece or 3 pieces.

    1. To remove the rotted bottom, slowly remove the rotted wood with a chisel, but don't rush. Try to see if you can remove it without the window sagging. If it does, install supporters (is the window on the first floor?) to keep it from sagging. Once supported, you can continue and can determine your next step, according to what you find.

    2. For the bottom pane I would use a hardwood, like oak. Certain poplar and even treated fir could be used too, sure why not? But don't use pine, redwood, cedar or common.

    I will support the bottom pane with something beefier than the two dog legs (is that what you call them?)

  5. #5
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    Post Re: Bay Window Help

    Quote Originally Posted by dj1 View Post
    If it does, install supporters (is the window on the first floor?) to keep it from sagging. Once supported, you can continue and can determine your next step, according to what you find.
    Yes it's on the first floor. What is the best way to support it? How should we attach the supports to the house? Just use nails?


    I will support the bottom pane with something beefier than the two dog legs (is that what you call them?)
    That is what Pella called them.

    What would be a beefier way to support it?

  6. #6
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    Default Re: Bay Window Help

    For temporary supporters while you're doing the cleaning and replacing, use 4 bottle jacks (the kind you use to raise your car) and 4x4s long enough to be lifted by the jacks to support the window(s).

    For beefier permanant support, I'd use pieces of 4x4 to go from under the center window to the house. Fasten with lug bolts to the house and the bottom window frame, like we use in decks and patio covers.

  7. #7
    Join Date
    Jun 2012
    Location
    Fort Smith, Arkansas
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    4

    Default Re: Bay Window Help

    If you do as another poster suggested and replace the sill with oak, use white oak and not red oak. Red oak will rot quickly while white will last a long time due to different grain structures.

  8. #8
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    Default Re: Bay Window Help

    Some time around 1997 I restored one exactly like that mess. I bought new sill stock (it's a standard profile, believe it or not) and sealed it with Abatron epoxy.
    Casey
    Remove not the ancient landmark, which your fathers have set.

  9. #9
    Join Date
    Jun 2012
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    12

    Default Re: Bay Window Help

    You can use Redwood or Cypress wood to replace it. These woods are pretty good in bearing any environmental change.

  10. #10
    Join Date
    Apr 2012
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    203

    Smile Re: Bay Window Help

    THANKS Ralph for the help

    Do I have to do anything special to those woods (like 'season' them) to make them weatherproof before I paint them? ...or just cut, install and paint them? I was told that other woods needed to be 'seasoned' for a couple of months before I could paint it, so just wondering if this was the same.

    Which of the two is better in your opinion ?

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