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#2751111 - 01/29/16 05:26 PM Drain pipe
MikePope Offline
Senior Member

Registered: 08/16/15
Posts: 36
Loc: Maryland
Hey Ethan. I'm wondering what to do about a drain pipe I have running floor to ceiling in my basement. Yeah...right in the f-ing middle of the main room. The guy who did the finish work built a huge pillar around it, which was really obtrusive. I just ripped it out of there, exposing it and the support jack post right next to it.

I'll probably just paint the post...if you can't fix it (house would collapse), feature it, right? And I'd do something similar with the drain pipe (3" pvc) but I happened to notice that it's pretty noisy when water is running through it which would be a problem.

My first thought was to get a piece of 4" PVC, slice it in half along its length, and reassemble it around the existing 3" pipe with SOMETHING in the little bit of space between the outside of the 3", and the inside of the 4" and then paint the whole thing.

Do you have any idea what material I might use, there?
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#2751304 - 01/30/16 11:40 AM Re: Drain pipe [Re: MikePope]
Ethan Winer Moderator Offline
MP Hall of Fame Member

Registered: 06/12/00
Posts: 8905
Loc: New Milford, CT, USA
A 3-inch diameter pipe is not a problem acoustically unless it's directly in front of your face as you listen to loudspeakers. Same for a jack post. They're just too small (too little surface area) to have much affect.

--Ethan

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#2751334 - 01/30/16 01:03 PM Re: Drain pipe [Re: Ethan Winer]
MikePope Offline
Senior Member

Registered: 08/16/15
Posts: 36
Loc: Maryland
But what of the sound that eminates from the drain pipe as water flows through it? Any ideas for how to quiet it down?
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#2751335 - 01/30/16 01:03 PM Re: Drain pipe [Re: MikePope]
MikePope Offline
Senior Member

Registered: 08/16/15
Posts: 36
Loc: Maryland
By the way, great interview at the link on FB.
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#2751341 - 01/30/16 01:14 PM Re: Drain pipe [Re: MikePope]
Ethan Winer Moderator Offline
MP Hall of Fame Member

Registered: 06/12/00
Posts: 8905
Loc: New Milford, CT, USA
Ah, I didn't realize the pipe makes noise! If the noise is mostly midrange sounds, maybe some sort of heavy rubber would damp it? If you encase the pipe with something rigid like an outer PVC pipe, it's important that the outer pipe not touch the inner pipe. I guess a wrap of fluffy insulation would keep the pieces separate.

--Ethan

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#2751349 - 01/30/16 01:27 PM Re: Drain pipe [Re: Ethan Winer]
Rky Offline
Senior Member

Registered: 07/15/06
Posts: 162
Loc: Chicagoland,Illinois,USA
Mike, are you saying you hear gurgling or a rushing water sound coming from the 3" pipe? Yeah, I work in a lot of homes where you can hear the water running in drain pipes in the wall of a living room when someone flushes a toilet or takes a shower.

If so, it sounds like you need to isolate the pipe acoustically i.e. soundproof it. To quiet it, you will probably have to build a column again with possibly 2 or 3 drywall layers and with insulation around the pipe. I don't know exactly what it would take but maybe this forum might be a place to ask: https://www.gearslutz.com/board/studio-building-acoustics/

Cheers,
Rock

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#2751353 - 01/30/16 01:43 PM Re: Drain pipe [Re: Rky]
Rky Offline
Senior Member

Registered: 07/15/06
Posts: 162
Loc: Chicagoland,Illinois,USA

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#2752262 - 02/02/16 11:38 AM Re: Drain pipe [Re: Rky]
MikePope Offline
Senior Member

Registered: 08/16/15
Posts: 36
Loc: Maryland
I'm going to encase the 3" pipe in a 4" pipe and attach a vacuum cleaner to suck the air out of the space between the two, thus creating a vacuum through which sound cannot travel.

Any ideas on how to quiet down the vacuum cleaner? crazy
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#2752291 - 02/02/16 01:00 PM Re: Drain pipe [Re: MikePope]
Rky Offline
Senior Member

Registered: 07/15/06
Posts: 162
Loc: Chicagoland,Illinois,USA
In space, no one can hear you vacuum.

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#2752295 - 02/02/16 01:16 PM Re: Drain pipe [Re: Rky]
MikePope Offline
Senior Member

Registered: 08/16/15
Posts: 36
Loc: Maryland
BTW, I like that acoustical fabric. I might try some of that.
Thanks!
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#2780212 - 05/21/16 01:36 AM Re: Drain pipe [Re: MikePope]
Steve V Offline
Member

Registered: 09/08/06
Posts: 24
Loc: USA
As a former plumber, I had to chime in. Why not wrap it in rigid fiberglass pipe insulation? It would absorb the sound of the water running through it. And if you take the foil/paper wrap off of it and wrap it with cloth, the outside would absorb sound making it acoustically invisible.

You can purchase it at any plumbing or insulation supply house.

https://www.zoro.com/owens-corning-fiberglass-pipe-insulation-fittings-and-tape/g/00065925/
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#2780213 - 05/21/16 01:42 AM Re: Drain pipe [Re: Steve V]
Steve V Offline
Member

Registered: 09/08/06
Posts: 24
Loc: USA
The link above may not show all sizes, but you can get it in sizes up to 33". Here's a link to OC's website: http://commercial.owenscorning.com/products/pipe/fiberglas-pipe-insulation/

I used to use 20" ones filled with fluffy insulation and capped on both ends as "tube traps" in my corners.


Edited by Steve V (05/21/16 01:42 AM)
Edit Reason: Typo
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