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Old 02-20-2010, 11:21 AM   #1
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jeld win windows sweating !!


i recently ( last fall ) installed new construction jeld win double pane windows in my 50 year old house, i have not put in the jamb extensions or any of the inside trim, i did put insulation around the window for the winter, i noticed today that the insulation is wet, more so at the bottom and outer edge ( outer edge being the the edge that butts up to the nailing flange) , my question is, am i getting this moisture because i have not instaled the jamb extensions and covered them with the trim, that is what it seems like ( simple condensation ) also these are new construction with the j channel built into the window, should i consider using foam instead of batting insulation, thanks for the help and for this forum, jim

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Old 02-20-2010, 11:24 AM   #2
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jeld win windows sweating !!


If you can rule out water leakage from outside, it is probably condensation due to air/heat loss.

Use non-expanding spray foam after the window is shimmed and screwd properly to eliminate air leaks.

After you insulate the sides with foam, wet your hand and feel around the perimeter for any drafts.

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Old 02-20-2010, 11:46 AM   #3
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jeld win windows sweating !!


the house has a 3 foot overhang, plus this window is in a corner by the front door, so it is covered by about 6 feet of overhang, and it sits on a bedford stone ledge , and that ledge is dry, so i dont think the water is coming from outside.
from what you are saying if i insulate and trim , that will stop the air loss and thus stop the condensation , correct ?
also i used the bat layers instead of the spray foam, ( installation instructions warned against using foam due to expansion problems that might affect the window opening and closing properly )
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Old 02-20-2010, 03:14 PM   #4
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jeld win windows sweating !!


Low expanding foam. As mentioned already, it is most likely condensation.
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Old 05-13-2010, 08:26 PM   #5
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Quote:
Originally Posted by EmilyP View Post
The windows are junk period.
You seem to have 2 logins

EmilyP (2 posts) & Emily P (102 posts)

Which one do you wish to use ???
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Old 05-17-2010, 02:01 AM   #6
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jeld win windows sweating !!


Condensation comes from too much moisture in the air hitting something cold; in your case, a double paned window, which is a low-end window these days. Is your house properly vented, like w/ a properly working HRV? If you can, reduce the moisture in the home, to about 30-40%. That will help. I don't think air leakage has anything to do w/ condensation, myself. If wet air is running out a crack, it is not hitting the window. Dead, moist air will condense. As for "the best" windows alluded to above, those names are not at the top where I read. Windows are very sophisticated now; triple pane, low-density gas filled, various films, etc.
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Old 05-17-2010, 06:49 AM   #7
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jeld win windows sweating !!


Don't install the trim until you get things fixed.

jklingel is probably right.

Any pictures? Your location?
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Old 05-17-2010, 06:58 PM   #8
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I see Emily is trolling again.
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Old 05-27-2010, 10:10 PM   #9
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Hmm Emily, why did you get kicked?
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Old 05-27-2010, 10:23 PM   #10
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Quote:
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If they are not the top rated windows then who's the manufacture?
Em: These are the names that seem to pop up pretty regularly; spendy, but apparently well made, and all the "numbers" people need. Accurate Dorwin, Duxton, Inline Fiberglass, Fibertec, and Thermotech Fiberglass (in Canada) and Serious (in the US). I've also read about some German windows, but they are in the stratosphere. This is just what I read; I am not the local expert on windows, and maybe some of the other companies buy from these cats and relabel the windows with their name. ????? Here is a link to one of the articles I've read of late. http://www.greenbuildingadvisor.com/...glazed-windows
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Old 05-27-2010, 10:42 PM   #11
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We had a bunch of windows fail in a home we purchased and found out it was a manufacturer's defect and got under some claim and they were replaced. It was very interesting.
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Old 05-27-2010, 10:59 PM   #12
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Quote:
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We had a bunch of windows fail in a home we purchased and found out it was a manufacturer's defect and got under some claim and they were replaced. It was very interesting.
Brand? How are the new ones working? thnx. j

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