Aluminum Window Frames Frosting Up

Old 01-19-16, 09:07 AM
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Join Date: Dec 2006
Location: USA
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Aluminum Window Frames Frosting Up

I replaced my basement windows that sit in a aluminum frame. The new windows seem to be working fine, but I am having a problem with the aluminum frames they sit in frosting up. I believe what is happening is the aluminum frames are conducting the cold from the outside to the inside where it hits warm air and causing condensation. I have tried a few things to try and remedy this:

1) Put foam tape on the frame in the outside (exterior)
2) Wrap the frame with terry cloth towels in the inside (helped some)

What I may try:
1) Foam tape on the interior frame
2) Dehumidify my basement

I wondering if anyone else had this issue and perhaps have any insight to what could help.
Old 01-19-16, 10:38 AM
Join Date: Jan 2011
Location: USA
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You've already found the cause.
As long as that moist warm air comes in contact with the aluminum it will continue to happen.
Find out what the humidy level is before buying a dehumidifer.

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