Is plastic on my windows just as good a drapes for the winter?
why not both ! 3M product is really good ,very clear
yes if you surface mount it get a 5 dead air space between winder plastic winder is perfectly acceptable in Texas
Depends on where you live. Dry climate? probably will be ok, but why plastic? Humid climate? nope, I wouldn't. Condensation, bugs, etc...
The plastic should do a better job than the drapes if you have the windows sealed real good!!!!
Much, Much better -- and wait -- 3M makes a plastic just for windows -- just get right size -- cut to size, tape, and use hair dryer on it to tighten it. I'm telling you that people can't even see that it is there. I've had it on a 6' X 4' bay window in living room and left it up during summer it was so invisible. It's clear as a window and tight as hell.