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-   -   Moisture on drywall and window sill (http://www.diychatroom.com/f2/moisture-drywall-window-sill-118328/)

redwings83 09-26-2011 08:03 AM

Moisture on drywall and window sill
 
Hi Everyone,

It's my first post and I'm not sure if this is the right topic or not.

I have been having a moisture problem around one of my windows. It is on the front of my single-story house. The drywall on the bottom corner of the window is somwhat soft. The window sill is wood and also has moisture in the same corner.

We've had a lot of rain in Michigan lately, so I thought yesterday would be a good time to go in the attic and check if the moisture was coming from the roof which was my first assumption. I gave everything as good an inspection as I could up there, and could find no signs of moisture anywhere in the attic. The roof looked and felt dry, no water staining, mold, wet insulation, etc.

The roof overhangs the window by maybe 16 inches and there is a gutter. I've kept the gutter clear thinking maybe it was some kind of overflow problem. This does not seem to be the case.

About a year ago I also noticed a previous owner had caulked the drain on the outside of the window shut. I cut it open at the time and a good deal of water poured out. Now this was long enough ago that I would assume any water problem related to that would be fixed.

Also, the brick around the problem window on the outside of the house gets very wet during rain, and it is noticeably darker than the rest of the brick on the house.

Any ideas on where/what my problem may be? I could probably post photos later. I'm a newish homeowner so advice is appreciated!

gregzoll 09-26-2011 08:38 AM

You are going to have to remove the drywall to find out where it is leaking. My bet is improperly installed and flashed windows.

redwings83 09-26-2011 09:13 AM

Quote:

Originally Posted by gregzoll (Post 736135)
You are going to have to remove the drywall to find out where it is leaking. My bet is improperly installed and flashed windows.

I had already resigned myself to that fate. Do you think that could cause excess moisture on the brick on the outside of the house too?

gregzoll 09-26-2011 10:51 AM

What taking off the drywall, no. How far up does the brick go on that side of the house? Post pictures both interior and exterior.

Thurman 09-26-2011 04:11 PM

You just gave a good clue as to what the problem may be: "Also, the brick around the problem window on the outside of the house gets very wet during rain>." Most likely you have a leak on the outside of the window allowing rain water to leach in between the exterior wall and the inside drywall. Water that leaches into a cavity such as this will follow any horizontal board (if any present) and wind up on the inside surface of the drywall. I've seen this too many times. I also agree you will have to remove some drywall around the window and find the source and path of this water intrusion.


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