Quieting ABS pipe...

[tarmy]

I have ABS on the second floor running in between the floors...noisy down stairs...

I have plenty of room to add several solutions like extra insulation, spray foam etc....

Any suggestions are welcomed to help quiet the water flowing noise...thanks

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[Kevin54]

I'd just wrap it with insulation if you have access to the complete pipe.

 

[Milton Shaw]

A lot of two story houses have cast iron pipe in the ceilings of the first floor because the plastic is so noisy. I don't think insulation will get it that much quieter.

 

[nh_yota]

You want something that will absorb noise and vibration like fiberglass or rock wool. Spray foam is too rigid.

 

[Norcal]

Swap out the ABS for cast iron, but that is not always feasible.

 

[Stuart in MN]

I'd look at wrapping it with sound deadening material. In cars they use Dynamat or similar products, but for home use try that peel and stick rubber roofing stuff you can get at the big box store.

 

[nh_yota]

McMaster-Carr is a good source for generic sound deadening material. Anything with a brand name like Dynamat is going to cost significantly more. I looked into stuff like that 10-15 years ago when I was into car audio stuff.

 

[rlitman]

A lot of two story houses have cast iron pipe in the ceilings of the first floor because the plastic is so noisy. I don't think insulation will get it that much quieter.

Cast iron is by far the way to go.

The rubber stick on roofing in an interesting idea.
Wrapping in acoustilead should work well.

 

[BD1]

Preformed pipe insulation is the first step.

 

[e36jon]

I don't have any association with these guys, but this (Or something like it that combines a mass-loaded barrier layer and a foam isolation layer) is what you need: http://www.soundproofcow.com/Quiet-Wrap-Pipe-Soundproofing-Wrap.html

If you Google "PVC pipe noise reduction" you'll get lots of hits...

Good luck!

Jon

 

[Two Sheds]

One of the cheapest things is to wrap it in a few layers of waffle carpet pad secured with cable ties. Get the heaviest and densest you can find.

 

[Thumper68]

I replaced about 3 feet of cast iron with PVC in my basement workshop/office last week and I can sure tell the difference, noisy as hell now I may use one of these ideas to quiet it down.

 

[rayra]

Fiberglass batts or pipe insulation will do. Don't use a hard-setting foam, it will conduct almost as much noise as it attenuates.

Consider adding another layer of sound-blocking drywall.


/time warping to the days of Archie Bunker and Married With Children when a toilet flushing upstairs was a routine gag.

 

[rharman]

When we remodeled 20+ years ago and added a 2nd story, the architects spec'd cast iron for the drops from the upper floor. I thought that was kind of old school until they explained the difference. Definitely quieter than what I've heard in other new construction that was all ABS.

 

[kbs2244]

A plumbing supply shop will have self-sick lead tape to run the length of your pipe.
It adds mass to absorb any vibrations.
It is code required in some places if you are going to be using C I soil pipe.

 

[tarmy]

Excellent ideas...thank you for commenting...

I plan on implementing some belt and suspenders approach...probably go with split tube foam (insulation type)...with that lead wrap idea...I really don't have great access to all of it or I would do it right by going to cast iron...

 

[Dragfluid]

Tell 'em not to poop so much up stairs!