Anyone have any additional thoughts on how to effectively soundproof a room? I have become increasingly irritated over the years on anyone hearing me practice, even if I'm playing on a silent brass mute (which can still be heard by family members). I'm at the point now where I flat-out refuse to play my trumpet if anyone else is in the house. That has resulted in a great lack of consistency in my playing, as my total practice time is 100% reliant if anyone is in the house at all. I have even stopped practice sessions cold when I hear someone get home from work.
I don't have enough money to buy some isolated house somewhere, but I do have $3500 I could spend on soundproofing a room. There is an 8.5 x 12 room out in my garage that is basically just a library right now, so I'm looking at somehow soundproofing that. I just have to have total isolation when I play. If I don't, my trumpet playing days may be numbered, as I hate playing on weak lips.
Any ideas or any contractors you know of that does this sort of thing?