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I live in an older home with windows that build up frost in the winter, which indicates they aren't insulated very well. I am thinking of installing kits like these over the windows:
However, before I spend the time and money (and generate the additional plastic waste) I'd like to have a better idea of how effective they are.
Is there any research or studies on how effective these kits are?
I have heard lots of anecdotal evidence, so that's not what I'm interested in here.
They will help . But a word of caution ,water will be running off your window sills if you put them on the inside of the windows. They are not attractive but neater when on the outside. On the inside they insulate the window and it is colder; moisture from inside the house condenses and runs down the cold glass. When on the outside ,they make the glass a little warmer and there is no condensation. I have a garden shed /green house so it is fairly humid with some electric heaters . I found insulating the windows on the inside causes heavy condensation . Insulation on the outside causes less or no condensation on the glass. I use foil faced ridged foam panels so the insulation is greater than the subject plastic film , that makes my situation more pronounced.
