Ok, I'm designing a tracking room that I want to isolate from the control room and the rest of the space.  I've got all the isolation design done on the walls and ceiling.  I'm going windowless, but going to have webcams in place so I can see what's going on while tracking.  My question is, are there any good sound deadening doors that I can use to help keep conversations and foot traffic from the hallway from getting into the tracking room.  I'm not worried about it when I'm tracking guitars and drums, but if I've got some quiet parts and delicate instruments I don't want to hear someone's phone "blowing up" in the hall.  What have you used, and what are some recommendations.  I'm on a pretty tight budget, so these can't be top of the line...but I want something that will work relatively well to compliment my wall design:  2x4 construction stuffed with insulation, then RC channel strips, soundboard and drywall.

P.S.  I have read about using exterior doors, but I'm not sure about that...seems like a good idea, but I wanted to elicit some other opinions.

Thanks!

Jeremy

Use solid core wood doors, the heavier, the better.  Ensure an airtight seal all the way around the door, and you'll be fine.

Darjama,

Your's is an intriguing idea that I had dismissed because it seemed like it would be difficult to attempt since I'm already framed out for a single door, and can't really take a step back to re-design.  Can you detail out how you would do it, so it would be cost effective?

Thanks,

Jeremy