soundproof a door

Tough one without replacing the entire door with something considerably more substantial. Maybe sliding glass or at least the same door in a solid core format?? If not, you might consider filling the door cavity with low expansion foam to at least deaden some HF leakage, though this will do precious little from around 2-3 kHz on down. If anything, make the gaps around all sides of the door (and frame) as well sealed as possible. Good luck - and I think the reason more of us don't have this problem is that we have dedicated areas (or rooms) for our gear that makes this problem moot.

-Richard

I just returned from checking the new offices my coworkers and I will be moving to. It looks like I'm being put into a room that was "soundproofed" for recording reasons. There's a large double paned window between my room and the outer offices with glass that's about 1/2" thick each. When I rapped on it, it felt like my knuckles were hitting granite. Solid and quiet. The entry wasn't anything special except for a solid core door that seemed very heavy. Whether this room is soundproof or not is yet to be tested, but I think Richard is correct that replacing a hollow core door with a solid one would be a good step. Your bi-fold could get expensive though.

A solid core is better of course, but unless it's 3 inches thick and totally sealed when you close it you won't really accomplish much. Funny thing that sound, it's always gettin in somebody's ears.

I have built sliding panels similar to pocket doors. It would have to hang inside your room. If you want, email me and I'll explain and send you some pics.

Larry