Author Topic: Help soundproof my bedroom ceiling  (Read 3064 times)

cancon

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Help soundproof my bedroom ceiling
« on: April 20, 2015, 04:13:46 PM »
Hello Randy, Looking forward to some input!

I am trying to soundproof a ceiling of a 1st floor room in a 100yr+ double brick home. The floor above is wood on a minimal sub-floor, no insulation between the joists and a plaster ceiling below. The noise transfer is both talking/music and physical movement on the floor above (it is astounding how normal conversation travels between the floor, I swear I can hear the receiving end of a phone call).

I have come up with three options, can you please weigh in on a "best-bet"?

1) Remove plaster ceiling (yuck), install R19/Roxul safe-n-sound insulation between joists. Install resilient channel. Install 2 layers of 5/8" drywall with green glue in-between.

2) Keep plaster. Install resilient channel. Install 2 layers of 5/8" drywall with green glue in-between.

3) Keep plaster. Install 2 layers of 5/8" drywall with 2 layers of green glue (between plaster and drywall and between drywall layers).

I guess this boils down to the possible benefit of adding Roxul first, and if it's worth the hassle of removing the plaster ceiling.

Whichever option, I'm thinking that I should open up a 1" channel of the wall against the ceiling to insulate against sound traveling down behind the walls as well.

Any help is much appreciated.
Thank you!

Randy S

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Re: Help soundproof my bedroom ceiling
« Reply #1 on: April 20, 2015, 04:51:35 PM »
Ok Cancon,

My advise is gut the whole place, sorry but lathe and plaster as you are aware is the worst for sound transfer...since you are on the receiving side and not the source side it is not just the ceiling but the walls as well. You can do just the ceiling but be aware that the impact will go down the walls in the end.

1) 5/8" drywall in between the joist glued and screwed to the subfloor above.
2) caulk and seal this layer before insulation goes in.
3) insulate the entire ceiling.
4) 1/8" mass loaded vinyl , caulked and sealed air tight/ water tight.
5) isolation clips and hat channel NOT just resilient channel.
http://www.supersoundproofingsales.com/SSP-Clips-1/productinfo/09-IS/
6) followed by 2 layers 5/8" drywall with green glue in between.
1/4" gap around the entire perimeter filled with acoustic caulk each layer.
make sure you offset first and second layer so seams do not meet seams.

Feel free to contact me direct.

Randy S.
760-752-3030 ext 3095

Randy Sieg

Super Soundproofing Co
www.soundproofing.org
888-942-7723
Ph. 760-752-3030
Fax.760-752-3040

cancon

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Re: Help soundproof my bedroom ceiling
« Reply #2 on: April 20, 2015, 10:26:05 PM »
 :'(

Thanks for the quick reply.
Sounds like the ceiling is coming down for sure.
The room is 156 sq ft, how many sound clips and acoustic caulk tubes should I plan for?

Hypothetically, if I gut the walls too, what would rebuild job entail?

Randy S

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Re: Help soundproof my bedroom ceiling
« Reply #3 on: April 20, 2015, 10:40:57 PM »
Cancon,

40 clips for the ceiling

Send me an e-mail direct and I will send you instructions and pictures.

Randy@soundproofing.org

Randy S.
Randy Sieg

Super Soundproofing Co
www.soundproofing.org
888-942-7723
Ph. 760-752-3030
Fax.760-752-3040

 

anything