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Old 12-31-2010, 09:39 AM   #16
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Very dry air, but windows condensate & ice up.

From what I see in the photos: The ice starts forming at the point where the panes are set into the window frames, not where the windows are set into the wall. This leads me to believe you have an air infiltration problem between the actual pane and window frame, regardless of how many panes of glass, and gasses, casement or sash windows. I know I'm not in Iowa, but proper exterior glazing is the key to stopping this air infiltration. One good way to test this would be to put plastic sheeting, at least 4 mil, over the worst window frame that does this, on the outside, to prevent the wind and humidity from blowing onto and around the panes. See if there is any improvement on this problem. If so, you may have to get the exterior of your window frame/glass re-sealed.


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Old 12-31-2010, 01:58 PM   #17
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Very dry air, but windows condensate & ice up.

i suspect excess humidity/moisture ,maybe not in the whole house,but within the r.o itself

this looks like its been going on for sometime which led to a failure at the sash corners

need more picks from outside showing where the the window is situated on the house,more pics from inside standing back a little more

Last edited by Tom Struble; 12-31-2010 at 02:03 PM.
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Old 12-31-2010, 03:11 PM   #18
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Very dry air, but windows condensate & ice up.

I did a search on Marvin Casement Icing and
it seems there are others having the same problem
without any recourse from Marvin.

Since Marvin is still using a
metal spacer between their panes
this may be the problem.
What is the thickness of their glass?

Many companies have switched to
a rubber spacer to break the transfer
of the cold outside to the inside pane.
From the looks of those pics,I'd say
the problem is at that location.
As stated already,it could be aided
by a bad seal at the glass/wood
Definitely a warranty problem if your
humidity level is as you say.
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Old 01-01-2011, 12:50 AM   #19
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Very dry air, but windows condensate & ice up.

Use an incense or fireworks punk for smoke in the area next to. Fiberglass compressed will slow the air at jambs but it would be my last choice for stopping air movement. Pull the casings and install some twisted backer rod all around, you'll know if it's the window or the framing leakage after another smoke test.



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condensation , hvac air intake furnace , ventilation , windows

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