Replies

1. 
   r_ignacki | Apr 09, 2003 12:48am | #1

   sometimes, where it's called for, we let the insulators batt the stud spaces with fiberglass.

   Did a shrinks office once, styrofoam between the studs, two layers 5/8 sheet rock staggered seams, and no receptacles in the partitions between offices. You couldn't hear anything.
2. 
   s_ericks0n | Apr 10, 2003 10:36pm | #2

   I've done some reading on this.  One book "Constructing Bathrooms" listed these techniques:

   • insulation
   • doubling the drywall
   • resilient channels (holds the drywall off the stud so there's a semi-interrupted path for sound waves to follow
   • thicker wall with staggered studs
   • double stud wall

   There were several combinations that were rated from poor to excellent in terms of sound transmission.  I'm planning to use insulation in combination with resilient channel with standard 2x6 framing.  This rates in the "good" category (simple insulation is rated "marginal" and only one step above just normal framing.

   I'd like to know if anyone has experience with resilient channel.  The concept is simple, but are there any complications?

   Scott

1. 
   jonblakemore | Apr 11, 2003 12:11am | #3

   Scott,

   If you're going with a 5-1/2" wall already, I would recommend 2x3 studs, with a 1/2" space between them.  Same thickness, but with insulatoin and drywall, I think it probably would be better than 2x6 with RC.

   Just my take on it. 

   Jon Blakemore

3. 
   WayneL5 | Apr 15, 2003 12:31am | #4

   Here's a site with sound ratings for various wall and ceiling assemblies made with this manufacturer's materials.  You can see how to build walls with various sound ratings.

   http://www.nationalgypsum.com/resources/firesound/