0 Helpful?

Condensaton and icing on new E-Star windows

Hello, I have a new house (under 1 year old) that is E-Star compliant with double-glazed thermopane casement windows. Now that the weather has turned colder I am seeing condensation and icing along the bottom of the interior (room) side of most of my windows. The humidity in the house is pretty low. Is this indicative of defective windows, and how can I make a more accurate determination?

Thanks in advance,
Ed

Asked by Edmund Nadolski
Posted Dec 26, 2012 1:35 PM ET

Tags:

2 Answers

Select your preferred way to display the comments and click "Save settings" to activate your changes.
1.

Ed,
You don't have defective windows; you are simply seeing a demonstration of physics in action.

To get rid of the condensation, add an exterior storm window or lower your indoor humidity level.

For more information on the topic, see Rating Windows for Condensation Resistance.

Answered by Martin Holladay
Posted Dec 26, 2012 2:06 PM ET
Edited Dec 26, 2012 2:08 PM ET.

2.

Ed: "The humidity in the house is pretty low." Define "pretty low", pls. Are the windows outies in real thick walls? Do you have curtains or shades drawn a lot of the time?

Answered by John Klingel
Posted Dec 27, 2012 2:22 AM ET

Other Questions in Energy efficiency and durability

Conventional heat pumps with mini-split low temp efficiency?

In Mechanicals | Asked by Mai Tai | Jun 22, 18

How to keep pine siding from greying

In General questions | Asked by tech1234 | Jun 23, 18

Natural Gas wall furnaces

In Energy efficiency and durability | Asked by frasca | Jun 24, 18

Unvented roof — vaulted ceilings — moisture, rot, etc.

In General questions | Asked by Meyersrl | Jun 22, 18

Air Barrier Location

In Energy efficiency and durability | Asked by Dan C | Aug 6, 17
Register for a free account and join the conversation


Get a free account and join the conversation!
Become a GBA PRO!