Condensaton and icing on new E-Star windows
ednadolski
| Posted in Energy Efficiency and Durability on
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
GBA Detail Library
A collection of one thousand construction details organized by climate and house part
Search and download construction details
Replies
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.
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?