...okay, yeah....when you said "balloon up", I understood that as blowing up like a balloon.
...so, you are correct, an intake fan will help....but, I've only made bigger holes as an intake in your situation.
...if your mylar is still falling off, cut you some small squares of cardboard, and staple the cardboard onto the mylar. The carboard gives more of a surface area as support.
thanks for the tip man, sounds like a great idea
Hey u mad, im confused if theres positive pressure or negative pressure. You say negative, but then you say the room "balloons" up with air when the door is closed, which is positive pressure. When you go to first open the door to your room does it "suck" open like it is trying to pull into the room.....Or is it a little hard when you first open the door? Kinda like someone is on the other side "pushing" it closed in your face.
The "suck" is negative and the "push" is positive.
I also had this problem and it could be a couple of things. What size is the ducting on the inline fan that is sucking or pushing air out of the room compared to the size of the inline fan? If its necked down you can get positive pressure.
its getting sucked in strongly for sure, soon as i twist the door nob it practically opens half a foot or so.
the only mylar in my room is were there are possible air leaks (over my window which i attempted to seal) so i think the airs getting sucked through the gaps where it then tries to get into my room but the mylar is in the way, hence filling up like a balloon.
i hope this makes sence to use lol
again, thanks for the help.