how do you insulate and seal drafty windows?
We moved into a condo that has some poorly insulated venting windows and sliding doors to a balcony. If there existed a rectangular clear plastic bladder with three layers that could be made to fit in the space between the inner and outer windows, and if this bladder could be blown up with air, would it be effective in eliminating drafts and and behave much like a triple glazed window? Who would make a prototype to test the idea? The bladder would be easy to insert or remove and would be almost invisible. I think the idea has merit.