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Question DetailsAsked on 4/6/2013

Who to call for a minor leak coming in over a bay window topped with asphalt shingles?

The leak only happens in extreme weather (the window faces Northeast). The house itself is vinyl siding but the window has shingles over it. It was installed by the builder 9 years ago. Do not know whether to call a roofer or a siding specialist or general contractor.

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Voted Best Answer

See if you can make sure where the water is coming in - if through the window frame itself, may be a sash or window frame problem, which requires a window expert. If coming in around the outside of the window frame or through the wall directly over or around the window, likely a problem with the flashing and caulking that keeps water from getting in around the frame, or could possibly be due to damaged or blown-off shingles. (Generally, they should be fine after only 9 years). In that case, if you are not a do-it-yourself type, a roofer can probably check it out and see if there is a bad caulk joint around the window frame.

If you are into climbing ladders, or can mount a hand mirror on a broomstick to look all around the window frame yourself, you may be able to see the point of entry, if it is obvious.

You did not say if this happens in freezing weather or not - is there any possibility that it is being caused by ice-damming of melting snow at the leading edge of the shingles and meltwater backing up under the shingles. The bay window should have been installed with full-coverage ice and water shield under the shingles on a bay window, including ice and water shield or bitumastic shield all around the window frame, but a lot of window installers ignore that.

Answered 7 years ago by LCD

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