This is a follow-up to this question. The official answerer A.I. Breveleri writes:
The ideal separation distance between film and glass is 1/2 inch. Even 1 inch is too thick as it allows the trapped air to circulate freely within the gap. But at 1/2 inch, unless the plastic film is quite tight, it will bow in and stick to the glass over at least part of the window.
A similar question appears here.
I have windows of irregular depth and cannot achieve this uniform 1/2 inch gap. So I was wondering:
- Could I use two layers of window film, separated by about 1/2 inch, to get close to the ideal air gap?
- Could I do the same as #1 and also stick a layer of bubble wrap in between those two layers? What would be the effect?