hi guys
if there a problem to put 2 panels of rigid fiberglass when they have some glass film on it on one side because it's gonna make a double membrane system!
do i put one side with film like fsk in front of the wall and one facing the room or do i put the two of them facing the room so the membrane stays at the back and the open glass front
any ideas?

Run,

> do i put one side with film like fsk in front of the wall and one facing the room or ... <

I've never tested all those combinations so I can't say for sure. Though I may test that some day. For flat wall mounting I doubt it makes much difference which way the facing goes on the panel closer to the wall. Obviously, it makes a big difference on the side that faces the room.

--Ethan