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Isolating heating vents in Bulkhead
Old 17th October 2013
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ARIEL's Avatar
Isolating heating vents in Bulkhead

I am soundproofing a 20 x 10 room for drums . There is a bulkhead that runs along the one side of the ceiling in it is the heating for the room above . I have gutted the room so I can seal and soundproof properly . My question is regarding the heating vent would using mass loaded Vinyl and wrapping around the metal work helps in preventing the drum noise from going into the ducts ? anything else to be suggested ? I'll be using sound clips , 2 layers of 5/8 on all walls with green glue . But I thought I could add something to the ducts . Thanks
Old 17th October 2013
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jhbrandt's Avatar

MLV can help by adding mass & damping, but the help that you'd get may not be noticeable.

Your best approach would be a frame-out & several layers of gypsum board - DECOUPLED.

And you must baffle any vents that connect to/from the room. The devil is in the details and this is not all of them.

Rod explains much in his book,

I hope that link is good. Im on my phone...


Sent from my SM-N900
Old 17th October 2013
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ARIEL's Avatar
Thanks for the info ! I'll have to grab the book then . Thank fully none of the vents actually go into the room they just bring hot air into the room above . So looks like I just have to fraam out , insulate within the frame (bulkehead) . Whisper clips and channel . say 4 layers of 5/8" drywall with GG in between .
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