Maiking PVC DWV Lines More Quite - Plumbing - Contractor Talk

Maiking PVC DWV Lines More Quite

 
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Old 02-11-2008, 03:30 PM   #1
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Maiking PVC DWV Lines More Quite


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?

Last edited by personalt; 02-11-2008 at 04:26 PM.
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Old 02-11-2008, 05:46 PM   #2
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Re: Maiking PVC DWV Lines More Quite


Quote:
Originally Posted by personalt View Post
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?
Use CI pipe, it is a lot quieter.

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Old 02-11-2008, 05:56 PM   #3
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Re: Maiking PVC DWV Lines More Quite


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Originally Posted by KillerToiletSpi View Post
Use CI pipe, it is a lot quieter.
I'm prescient!



I somehow knew just what you would say.
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Old 02-11-2008, 08:23 PM   #4
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Re: Maiking PVC DWV Lines More Quite


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I'm prescient!
Bush died and left you president? How'd that work? Can I be Secretary of Girlie Bars?
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Old 02-11-2008, 08:32 PM   #5
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Re: Maiking PVC DWV Lines More Quite


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Bush died and left you president? How'd that work? Can I be Secretary of Girlie Bars?
No, that position has already been filled.
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Old 02-11-2008, 10:29 PM   #6
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Re: Maiking PVC DWV Lines More Quite


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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Old 02-11-2008, 10:40 PM   #7
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Re: Maiking PVC DWV Lines More Quite


Once again,
I knew just where this thread
was going as soon as it started!
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Old 02-11-2008, 10:46 PM   #8
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Re: Maiking PVC DWV Lines More Quite


Quote:
Originally Posted by neolitic View Post
Once again,
I knew just where this thread
was going as soon as it started!
I couldn't resist, This thread was begging for it.
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Old 02-12-2008, 04:52 AM   #9
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Re: Maiking PVC DWV Lines More Quite


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.
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Old 02-12-2008, 06:23 AM   #10
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Re: Maiking PVC DWV Lines More Quite


Quote:
Originally Posted by KillerToiletSpi View Post
Use CI pipe, it is a lot quieter.
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
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Old 02-12-2008, 07:40 AM   #11
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Re: Maiking PVC DWV Lines More Quite


Try some Ear Plugs
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Old 02-12-2008, 07:46 AM   #12
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Re: Maiking PVC DWV Lines More Quite


Truthfully, they do make sound board, sure it's more expensive the CI.
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Old 02-12-2008, 07:51 AM   #13
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Re: Maiking PVC DWV Lines More Quite


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
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Old 02-12-2008, 11:22 AM   #14
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Re: Maiking PVC DWV Lines More Quite


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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Old 02-12-2008, 12:11 PM   #15
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Re: Maiking PVC DWV Lines More Quite


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.
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Old 02-12-2008, 12:38 PM   #16
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Re: Maiking PVC DWV Lines More Quite


If only they paid by the pound...

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Old 02-12-2008, 08:16 PM   #17
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Re: Maiking PVC DWV Lines More Quite


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.
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Old 02-13-2008, 01:12 AM   #18
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Re: Maiking PVC DWV Lines More Quite


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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Old 02-13-2008, 02:45 AM   #19
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Re: Maiking PVC DWV Lines More Quite


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.

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