How to Repair Leaking Window in Vinyl Siding

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Denise Marie St...
1 expert, 1 community

What's the best way to repair a leaking window on a home that's surrounded by vinyl siding? Water only comes in during heavy rains. My dining room double-window appears to have a broken J-channel. The subfloor under the middle of the window is rotting/has a hole in it. I assume I have to fill in the hole by the window and possibly fix the J-channel, then pull up the carpet and cut out/replace that section of the subfloor, right?

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we did have it fixed similarly to your description. however, the hole was big enough we did have the subfloor cut out and a section replaced. Carpet was not damaged, so we were able to keep it. 


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