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  1. #1
    Join Date
    Sep 2011
    Posts
    2

    Default Rotting Window Sills

    Some of my window sills are rotting. The rest of the window frame is fine. A contractor suggested covering the window frames with alluminum. Is this a good way to fix the probelm? If not, what is the best way to repair them?

  2. #2
    Join Date
    Mar 2008
    Location
    nova scotia, canada
    Posts
    1,522

    Default Re: Rotting Window Sills

    cladding the sil with aluminum wont fix the problem it will delay the rotting. its simply a bandaid.. if you want hte sil "fixed" it will have to be replaced with fresh wood or the bad sections cut out and filled with new wood .
    fire up the saw and make some dust

  3. #3
    Join Date
    Sep 2011
    Posts
    2

    Default Re: Rotting Window Sills

    That's what I thought. Just wanted to make sure before committing the time and money.

  4. #4
    Join Date
    May 2011
    Posts
    251

    Default Re: Rotting Window Sills

    It's worth also trying to figure out why they are rotting. Did they just need to be painted and bare wood exposed to water? IS there a problem with the gutters, or eaves leaking? Is the siding flashed incorrectly. Are there storm windows that have plugged up weep holes or have caulk at the bottom?
    1925 Two-Story Stucco Beaux Arts Neoclassical

  5. #5
    Join Date
    May 2009
    Location
    Elyria, Oh.
    Posts
    245

    Default Re: Rotting Window Sills

    Cladding it with aluminum will actually speed up the rotting process as the wood can never dry out and the aluminum will not be leak free. If the wood is just rotted in small areas you can dig out the rotted wood to good wood and then use Bondo to fill the bad spots. I've gone through about 5 cans of Bondo repairing many of my 420 sashes in my 99 year old five story apartment building and years later all of the Bondo is still in place. I used to buy the specialty stuff from old house catalogs but found that the Bondo at the auto parts store is the same stuff and a lot cheaper. Beware when working with it that once its mixed you have five minutes to work with it - no more - so mix only what you can use in five minutes.

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