Super Soundproofing Community Forum

Soundproofing Forum Topics => Soundproofing your single family home from traffic noise and neighbors. => Topic started by: Jonathan on January 29, 2015, 01:55:43 PM

Title: Advice on something soundproofing bathroom wall
Post by: Jonathan on January 29, 2015, 01:55:43 PM
Hi, I'm putting a new bathroom suite in so at the same time want to sound proof (as much as possible) the wall in the photo. The reason being is a property is on the other side and you can quite literally hear everything.
My idea was to place stud work down the wall and fill with acoustic wool (50mm) then cover this with acoustic plasterboard.
I'm restricted to depth due to all the pipework so am thinking of placing another layer of stud work over the plasterboard to create a type of air gap. My worry is the second wall has to be connected to the first for support. Within this wall would be the pipes etc.
I'd the plasterboard over the second wall.
Any advice would be greatly appreciated.
Thank you
Title: Re: Advice on something soundproofing bathroom wall
Post by: Randy S on January 29, 2015, 08:55:58 PM
Just double the ACTUAL weight of the wall which would give you a 40% reduction of airborne sound that is coming through the wall today...
The only way you can reduce the pipe noise is to decouple the pipe from the structure so that it does not touch the structure by putting something like a closed cell foam mat between the pipe and any strapping and disconnecting the pipe from framing.

Remember that adding a single layer to the wall does not double the weight..

Randy S.
Title: Re: Advice on something soundproofing bathroom wall
Post by: Jonathan on January 30, 2015, 12:28:05 PM
Thanks for the reply. What do you mean doubling the actual weight of the wall? New to this so limited knowledge.

Many thanks
Title: Re: Advice on something soundproofing bathroom wall
Post by: Randy S on January 30, 2015, 05:28:51 PM
if the wall has a layer of 5/8" drywall @ 2.3 lbs per sqft. on both sides then you would need to add 5 more lbs per sqft to the wall just to double the mass of the wall.

no matter what is there currently ( both sides and frame combined) you need to add that same amount to double it..
This is where most people make their first mistake by simply adding a single layer instead of a double layer to double what is there.

make sense?

Randy S.