Sound reduction in bathroom wall

[Possom]

I'm aware that if rolls of floor insulation are installed below a timber floor that one also has to use a net to hold the roll up to the floor to allow continued air circulation.

I think there is a similar product roll which can be purchased but which reduces sound. I was considering installing this in the cavity of the wall beside where the bath/shower is.

Does some sort of similar net have to be installed to keep the roll affixed to one side of the cavity wall, and allow air circulation, or is it simply nailed against one of the walls meaning it won't block the entire cavity?

Thanks!

 

[Burnerman]

Are you talking about a studding timber wall here? I'd just fill it up with cavity slab insulation if it is.
John

 

[freddiemercurystwin]

In a separating floor you would only use netting if say the underside was lath and plaster and susceptible to collapse in the event of a fire. If it were a ground floor then you'd need netting to hold it up against the floor boards.

With regards to a partition you'd normally purchase something like Knuaf Acoustic Roll and I'd use the full thickness to fill the cavity. It's not the same as ordinary loft insulation as it's denser, normally greater than 10kg/m3.

 

[Possom]

Are you talking about a studding timber wall here? I'd just fill it up with cavity slab insulation if it is.
John

Thanks.

Yes, it's a stud timber wall.