Quote Originally Posted by goraman View Post
I am not saying it isn't grounded , I am just saying mylar can be used as a shield with no ground.
However would require other material such as graphite added to be partially effective as a conductor, with then shielding as perhaps one flamboyant use

Mylar on its own is a excellent electrical insulator, which unfortunately does not have properties as a electromagnetic shield https://en.wikipedia.org/wiki/Electromagnetic_shielding