Does anyone know of a product that one can apply to the glass window panes that will reduce the amount of cold temperature that they transmit (radiate?) to a room? Everywhere sells films that will reduce the amount of heat gain, but I'm trying to decrease the cold transmittance.
My daughter's room has a relatively large window for small room and it is by far the coldest room in the house so I am looking for ways to reduce the amount of heat loss or cold gain. I haven't been able to identify a draft/leak in the window and it faces east so I don't think that is the answer. Maybe some of y'all from up north know of something? I'm trying to avoid having to put an oil radiator in there. Thanks

 

This isn't a permanent solution to your prob, and you should probably check the insulation in the room and/or replace the windows with newer ones (or that room could just be furthest from the furnace, and not getting the same amount of heat through the vents).....But in the winter here, we used to cover/seal some windows and/or sliding glass doors with very thick plastic. They sell it for this exact purpose. You use double-sided tape or other methods, and vacuum seal the plastic. This should eliminate all of the draft coming through the glass.

If there is a draft, you'll see the space behind the plastic fill with air (like a sail). The downside: some plastics weren't completely clear, so the view to the outdoors wasn't perfect, and you can't use that door/window while the plastic is up (no opening or closing unless you unseal part of the plastic).

 

The insulation is intact/present (I was at our house everyday when they built it) and there is no detectable draft - I used matches/smoke to look for any air current and there wasn't any.

The plastic idea is what my next door neighbor (who builds multi million dollar homes) suggested too as a way to create a dead space for insulation but we are going to be listing our current home soon and so we don't want to do anything too drastic or aesthetically unappealing to the window. I think we're going to end up with a portable oil radiator in the end as this needs to be a one winter fix. Thanks----

 

What about replacing the window?

 

This guy has a pretty good idea... Kind of a twist on SS's idea.

http://www.hammerzone.com/archives/e...ndow_cover.htm

It only works if the heat loss is through the glass and not drafts from behind the casing.

 

Thats the best fix. How old are the windows? Is it a picture window, if it is get a piece of plexiglass cut to fit over the glass, should help a little.

 

The window is about 4 X 6 with a half circle above it. Replacing it would be the best fix, but we're moving come March so I'm hesitant to pour more money into the house when we're leaving in 5 months. Not trying to be cheap, but all of the windows I've seen around here have visible transmittance, heat gain coefficient, etc labeling - nothing on the windows I've seen suggests anything about cold weather insulation or resistance to thermal radiation.
I know double paned/argon windows would do it, but again, I'm reluctant to put a few hundred more dollars (or more) in a $160K house knowing that I'll never be able to recoup it when we move in the spring.

Basically, I'm looking for something that is cheap, effective, and won't make the place look like a red-neck bungalo when we start showing it in the next few weeks. Thanks again for the input.