Maiking PVC DWV Lines More Quite

personalt

Added a new bathroom where the lines toilet and shower drains come across the ceililng of a 1st floor bedroom.

Being PVC they are somewhat loud. I plan to insulate the cavities they are in but anything else I do to lessen the noise?

KillerToiletSpider

Use CI pipe, it is a lot quieter.

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neolitic

I'm prescient!



I somehow knew just what you would say.

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Putty Truck

Bush died and left you president? How'd that work? Can I be Secretary of Girlie Bars?

mickeyco

No, that position has already been filled.

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A W Smith

Don't flush upstairs till the guests leave. That way they wont have to play "guess the length of that stool" As it plops down into the elbow above the living room and passes over head then drops into the basement waste line.

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neolitic

Once again,
I knew just where this thread
was going as soon as it started!

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A W Smith

I couldn't resist, This thread was begging for it.

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Putty Truck

I wanna girlie bar.

There's a crime family that has a few bars in the Seattle area, right? The grandfather got successfully sued for sexual harassment by a dancer.

personalt

Pipe is already run and just to much to redo in cast iron. Is there anything I can do to make more quiet?

I would imagine giving it more mass would do it. Roof cap cement might help but that would make a giant mess

Ron The Plumber

Try some Ear Plugs

Ron The Plumber

Truthfully, they do make sound board, sure it's more expensive the CI.

Ron The Plumber

What is ... Sound Deadening Board?
Sound Deadening Board is a specially made structural fiber board product designed for use in wall systems where sound control between rooms is desired.

http://www.housingzone.com/article/CA466516.html?q=stc

neolitic

Here goes...
You can try rigid fiberglass insulation,
with resilient acoustic channel, and ideally
a double layer of 5/8" drywall.
At least 1 layer of 5/8".
If you really want quiet, you might try
the above fiberglass and resilient channel
(auralex is one brand) with "Quiet Rock".
"SED" is another brand of "sound proofing" drywall.
Pricey is a word that comes to mind with
either drywall brand.
But then, the pretense that we don't have
animal functions is priceless!

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bob_cntrctr

Cellulose fibre insulation.

Check out this table:
http://www.soundsmart.ca/sound-absorption.aspx

Note that except for occupied seating, fibreglass batts and cellulose fibres have the highest Noise Reductin co-efficients. BUT - this table shows for 3 1/2" thick fibreglass batt versus just 1" thick cellulose. Taken per inch of material, fibreglass nrc = ~ 0.3 whereas cellulose =~ 0.5 - 0.75.

Fill your box with cellulose fibre. Modern stuff is treated with boric acid and other anti-mould agents so it won't go mouldy if there's ever a drain leak.

ChrWright

If only they paid by the pound...

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troubleseeker

Contact an insulation distributor for some sound proofing. There are different types, some sheet goods and some flexible wraps, that are available. It is commonly used in the marine industry to quite machinery room noises.

tdavis

we have wrapped a lot of ABS in grace ice and water shield and it seems to work pretty well. try a short section and see what you think.

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Sportbilly

Automotive Dynamat comes to mind, but not cheap, once again. Works on the principle of adding mass, reducing harmonics.

Legal? I have no idea. Effective? I have no idea, just a thought.