Quiet Drain Pipes

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If using CI pipe vs. PVC is best for reducing noise in the main stack, is there any reason I would want PVC sink/shower drains running to the main stack?

I'll be replacing all my bathroom plumbing (kitchen is below), and am thinking to use brass drain pipes as I've heard enough negative stories about the popping and cracking when running hot water through PVC.

Am I missing something?
 

Dj2

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CI is excellent, but expensive, so we all use ABS (or PVC). Under the sink I use plastic parts...metal parts corrode around the traps.

I once built a custom home and the h/o wanted "built in CI spouts" for the gutters... so they would be out of view. I never said no.
 
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So you think anything other than PVC is overkill for the lateral sink/shower drains? I'm really against the popping/cracking noises from expanding PVC, if I didn't want to use PVC what would you suggest?
 

Cwhyu2

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So you think anything other than PVC is overkill for the lateral sink/shower drains? I'm really against the popping/cracking noises from expanding PVC, if I didn't want to use PVC what would you suggest?
The noises you hear from PVC pipe from expansion and contraction is because it was roughed in tight where it went through studs or joists and is rubbing against the wood not from the pipe itself.
 

Michael Young

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So you think anything other than PVC is overkill for the lateral sink/shower drains? I'm really against the popping/cracking noises from expanding PVC, if I didn't want to use PVC what would you suggest?
Yes - way overkill. Even in multi-million dollar homes, the common practice is to install cast iron drops for noise reduction. Overhead, if you're really concerned, it would be easier and cheaper just to insulate the interior walls around where your plumbing pipes are running. That will address your noise concerns overhead and allow easy removal of insulation to access easy to the pipes if there are ever service issues.

 
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