4 mil window film, useful for security?
Interested in adding some security to a few especially vulnerable windows in a home. I'd like to make them a bit harder to smash. Not enough of a threat that I'm interested in replacing the windows, but hoping to add some deterrence to what would otherwise be an easy smash and enter.
I got a bid on 4-mil film to be applied to the windows, which range from 8 inches wide to large sliding door panels. Of course, the only way I'll know whether they work well is if I take one and try to smash it. :-) So I thought I'd ask all of you fine folks . . . would adding a layer of 4-mil (or 6-, or 8- . . .) film to one side of a window make it significantly more resistant to breaking through it?
Thanks for any advice!