Quote:
It's not going to give you the kind of thermal insulation that commercial doublepane windows do, b/c they are sealed etcetera. So, given that, it would be a LOT simpler to just get some doublesided tape and either clear plastic or bubblewrap, to put an inside layer over the windows during winter.
I tape bubblewrap over the inside of my basement windows. It ain't as good as proper thermopane windows but is a lot better than nothing. Is it better than a single clear plastic sheet? In theory. How much better? Dunno.
Pat
In reality, the effect of having two single panes would give you the same effect as having a double pane window assuming that the effficiency of each pane of glass is the same, I would have to assume that the old ones were replaced for higher efficiency windows. In a duel paned window the sealed area only acts as a buffer, in the scenario I mentioned you would have a 3 1/2 inch buffer instead of the 1/8th in that you get with a duel pane, assuming you installed both sides caulked properly and they are still in good shape. It will not be as preaty as a new window, but I ASSumed that you were looking to use what you had available to save money.