Super Soundproofing Community Forum

Soundproofing Forum Topics => Other Soundproofing Questions => Topic started by: Jason27 on December 07, 2017, 03:49:22 AM

Title: Basement sound proofing game plan
Post by: Jason27 on December 07, 2017, 03:49:22 AM
I'm finishing my basement and want to reduce the foot fall and nosies from above.  I can hear complete conversations easily above. 

Here's my plan:

5/8 drywall between 16" OC joist cavities with green glue sandwiched up to the subfloor above. 
Q: How much of a difference would a second layer of 5/8 drywall and green glue make?   The drywall is only about $175 more but the green glue is another $500 so if the difference is slight, I'll skip the second layer.

R19 faced insulation throughout

1/2" channel screwed to every other joist (Q: can I do every 2 joists?)

Single layer drywall screwed to channel.  Q: since it's a single layer, does it make much of a difference if it's 1/2" or 5/8"?

Once all this is done, I'll evaluate the effectiveness and if it's still bad, I'll probably spring for another layer of drywall with green glue although I'm hoping it won't be necessary.

Thanks for your input!!
Title: Re: Basement sound proofing game plan
Post by: Randy S on December 11, 2017, 09:01:06 PM
Impact noise is challenging..

5/8" with titebond 771-step in between the studs..

I would use clips and channel instead of just using resilient channel which would let have as much as 4' between clip locations. and yes you would have to screw the channel every joist using resilient channel.

Always use 2 layers of 5/8" drywall with green glue

Randy S.