Re: DWV pipe sounds (Was Re: Leviton Intellisense Vs Others)

["BruceR" <br@xxxxxxxxxxxxxxxx>]

Oh boy, I could start a seperate newsgroup on THAT topic!  The density
of the cast iron is what keeps it quiet. Wrapping with insulation won't
be easy in a 4" or 6" wall. The sound is magnified if the ABS (plastic)
pipe is touching the drywall. If you can get to the ABS to insulate it,
just cut it out and replace it with cast iron. It's not difficult at
all.
 Another tip: Build your floors out of 3/4" tongue & groove (T&G)
plywood glued to the joists and screwed - not nailed - to prevent
bouncing and squeaks.

From:Robert Green
ROBERT_GREEN1963@xxxxxxxxx

> "BruceR" <br@xxxxxxxxxxxxxxxx> wrote in message
>
> <stuff snipped>
>
>>  As an off topic aside, another recommendation is to have the plumber
>> use cast iron waste risers if it's a multi-level home. That way you
>> won't hear a waterfall on the first floor when a second floor toilet
>> is flushed. The cost is nominal to do it and you won't regret it.
>
> Is that simply an issue of the thickness of the cast iron pipe
> deadening the sound of the flush?  I wonder if you couldn't retrofit
> a pipe wrap around the plastic waste pipe in a house that wasn't made
> cast iron waste risers.
>
> One of the many interesting gotchas of new home construction
> techniques. Have you discovered any others?
>
> --
> Bobby G.