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AR15.COM
5/5/2009 11:23:49 AM EDT
I have double-paned windows all-around, but the inside still feels a bit cold during the winter months.

Is this thermal-barrier window film anything I should look into?  Replacing the windows is not an option, although I have made sure all the seals and such are in good condition, as well as making sure they all latch properly.  There are no drafts to speak of, just loss of heat through the glass.

Comments?
5/5/2009 12:29:06 PM EDT
[#1]
Nothing much you can do that is transparent and has any R value (R = 1/U).

You could try adding another layer of plastic, but that is mostly for infiltration.

An insulated (pleated) shade can help, or heavy drapes.
5/6/2009 3:36:13 PM EDT
[#2]
You will always have heat loss through windows.  Low-E argon filled double paned helps, but even they will not have anywhere close to the R value of a solid wall.
5/6/2009 4:05:41 PM EDT
[#3]
I thought it sounded too good to be true, and apparently it was.

Well, I guess I'll continue to add insulation to the attic and take the usual measures against heat loss/cold infiltration.

Thanks for your responses.
5/6/2009 4:14:30 PM EDT
[#4]
We replaced a picture window that was 2 pane wih a triple pane and were amazed at how big the difference was.
Used to be able to feel the cold through the window and now we do not.
Cannot remember if it had gas or not.
Was worth the money up here.
5/6/2009 4:19:27 PM EDT
[#5]
Quoted:
I have double-paned windows all-around, but the inside still feels a bit cold during the winter months.

Is this thermal-barrier window film anything I should look into?  Replacing the windows is not an option, although I have made sure all the seals and such are in good condition, as well as making sure they all latch properly.  There are no drafts to speak of, just loss of heat through the glass.

Comments?


You could buy the best windows in the world and you're still only going to have about R-3 insulating value. No way around it, glass is going to transfer heat and cold. All you can do is make sure the latches are tight, caulk around the frames and buy some insulated window coverings (i.e. drapes). Close the covers at night and when the sun is shining hard on the windows. Unless your windows are flat out worn out, you'll never save enough money on energy to justify better windows.

And no, that film probably doesn't do much.