BayWindow Dripping water from inside

amav31January 30, 2009

I noticed that the Baywindow in my Living room is dripping water from inside top where the wood frame meets the wall.

I took a picture and uploaded here.

I live in Boston and we had many snow storms this season.

There is lot of snow on the roof.But I noticed the water drips only when the temperatures rise and the snow is melting. I have another bay window in the den that does not have this problem nor does any other windows in the house. What could have gone wrong. ? The roof is in pretty good shape...not too old.

Any hints or suggestions will be much appreciated.

Thanks in advance


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Probably ice dams on the roof eave, no Ice & Water Shield underlayment or perhaps poor flashing so the water from melting snow is getting in. A classic freeze-thaw syndrome in cold climates. It's usually necessary to tear the roofing off at the eaves and put it back right.

    Bookmark   January 30, 2009 at 11:30AM
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I'd say not probably, but definitely an ice dam issue.

How old is your roof? Does the outside fascia above the window go straight up to the underside of a large overhanging soffit? Is the other bay the same type of window on the same side of the house?

If you pull off that trim board I suspect you'll find that the area above it likely has ponded water. As water is added to the "pond" it finds its way to the inside space.

If you can, go up in the attic with a stron flashlight and look at the undersidfe of the roof at the outside perimeter. See if it's wet and to what extent. If you see a significant amount of water and still have a lot of snow in the roof, It might be worth it to look into haing a roofer ciome and remove whatever snow he can.

That "leak" will likely continue until the snow is gone or iuntil the melt can freely flow off of the roof. This winter in New England you're not alone.

    Bookmark   January 30, 2009 at 4:04PM
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I cannot see any water in the attic.
But I think I will have someone over to come and clean the ice dam. Much thanks for your help.

    Bookmark   January 31, 2009 at 8:07AM
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