what kind of ambient air and humidity are you looking at? I would think that condensation would absorb into that and make it very heavy and difficult to keep in place. Something like reflectix wouldn't absorb moisture and still give you a barrier
WOODY: Hey, Mr. Peterson, there's a cold one waiting for you.
NORM: I know. If she calls, I'm not here.
Keg2: Pumpkin Ale
Bottled: Bourbon Oaked Porter
Primary: Empty :(