Pranay writes from Downingtown, Pennsylvania: "I just placed a plastic film to insulate my family room windows during the winter - after having placed the film around my windows (it was a difficult process), I noticed that some air still seems trapped between the window and the film. Is that normal? If not, can that hurt my windows when I remove the film in the spring?"

Answer: Thanks for the question but the topic is really outside my expertise and the expertise of my friends at Owens Corning. You should contact the film maker or the window maker. Good luck.