I chose to use cheap food plastic wrap instead of buying expensive window insulation, and it worked great.
This wrap acts as a “third pane” of glass, adding a layer of air that keeps the room warm. Because the house stayed warmer without the need for extra heaters, I was able to lower my heating costs.
Another benefit of the insulation sheet is that it keeps windows from getting condensation. It’s a known fact that windows that get wet can grow mold where the glass and frame meet. There is less of this risk in the movie.
How should it be put together correctly?
