Mike Lamb Posted April 22, 2013 Report Share Posted April 22, 2013 A client had a question for me about insulating a ceiling for sound. This is about a 10-year-old Chicago condo that most likely has a wood truss floor/ceiling system. I was thinking laminating a thick foam board with a drywall finish to the ceiling. Any other ideas? Quote Link to comment Share on other sites More sharing options...
ghentjr Posted April 22, 2013 Report Share Posted April 22, 2013 A client had a question for me about insulating a ceiling for sound. This is about a 10-year-old Chicago condo that most likely has a wood truss floor/ceiling system. I was thinking laminating a thick foam board with a drywall finish to the ceiling. Any other ideas? Is he trying to keep upstairs sound out or his sound from annoying others? Quote Link to comment Share on other sites More sharing options...
Chad Fabry Posted April 22, 2013 Report Share Posted April 22, 2013 Another layer of 5/8 drywall mounted on resilient channel is fast, cheap and highly effective. Quote Link to comment Share on other sites More sharing options...
inspector57 Posted April 22, 2013 Report Share Posted April 22, 2013 Lots of different products out there and it depends on the frequency that is the biggest concern. There used to be a product called "Deciban (sp?)" that is a plywood type product that could be layered. Resilient channels that create a thin air space between layers of drywall are another option. Don't forget the acoustic electrical box wrap. Quote Link to comment Share on other sites More sharing options...
Marc Posted April 22, 2013 Report Share Posted April 22, 2013 What Chad said. Whatever you use, it needs to be dense - heavy. The more dense the material is and the thicker it is, the greater the attenuation. The low pitch sounds will see less attenuation than the upper. So a man's voice will carry further than a woman's voice and I'm not being sexist. Marc Quote Link to comment Share on other sites More sharing options...
Rob Amaral Posted April 22, 2013 Report Share Posted April 22, 2013 Be careful.. factor in the dead-weight of any materials.. "Quiet rock" is a product used by recording and rehearsal studios.. I did a double-layer of drywall with resilient channel and it cut down the highs very, very well... (not the LF).. Quote Link to comment Share on other sites More sharing options...
John Kogel Posted April 22, 2013 Report Share Posted April 22, 2013 Condo ceiling - he or she wants to cut the sound of footsteps upstairs. Quote Link to comment Share on other sites More sharing options...
Mike Lamb Posted April 22, 2013 Author Report Share Posted April 22, 2013 Is he trying to keep upstairs sound out or his sound from annoying others? Would it matter? Noisy dog/foot traffic above. Quote Link to comment Share on other sites More sharing options...
ghentjr Posted April 22, 2013 Report Share Posted April 22, 2013 Originally posted by ghentjr Would it matter? Noisy dog/foot traffic above. I think each would be handled differently. If one had a music room and wanted to keep the noise in, it would require a different method than trying to quiet noisy footsteps from above. In this case, the best solution would probably be to pay for them to carpet their apartment. Quote Link to comment Share on other sites More sharing options...
Scottpat Posted April 22, 2013 Report Share Posted April 22, 2013 I see several homes a year with soundproofing around rooms of the home, most are used for music studios. They are built pretty much like Chad described but they fill or pack the resilient channel(2" to 4" airspace between the sections of walls/ceilings) with fiberglass or spray it with dense cellulose insulation. Then the final sheet of drywall is mounted with rubber or felt pads over each point of contact/attachment to reduce the vibrations. Quote Link to comment Share on other sites More sharing options...
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