[header] How to dewinterize a house [title] Take insulation off windows. [step] If you've put up insulation film on the windows, you'll need to take it down before you can open the windows. Leaving insulation film up after the winter will make it stuffy and hot inside your home. 
[substeps] Use a hairdryer to heat up the double-sided tape along the perimeter of the windows. Once the adhesive agent is warm and soft, you should be able to pull the plastic straight off the window frame.