Before you price out a full window replacement, take a breath. For localized rot—where the damage hasn’t reached the interior wall or destroyed the structural integrity of the frame— isn’t just a patch. It’s a resurrection.
Just remember: Dig out every speck of rot, use the liquid consolidator, and paint it properly. Do that, and your “rotted” sill will become the strongest part of the window. Have a rotted sill horror story or a success? Share it in the comments below. wood filler for rotted window sill
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