Corrosion at Polybutylene Pipe Joints

Originally Posted By: Joe Funderburk
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1st time I’ve seen this. Is it specific to Polybutylene piping?


[ Image: http://www.nachi.org/bbsystem/usrimages/0/083005_007.jpg ]


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Thanks,

Joe Funderburk
York County, SC
Alpha & Omega Home Inspection, LLC
jfunderburk@aohomeinspection.com
www.aohomeinspection.com

Originally Posted By: dlott
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I bet if someone rubbed the sediment buildup off the fittings it would be a very slow water leak at both fittings. Probably an improper crimp on fitting. If not that, maybe electrolysis coming from downstream connection. I can’t see what the solid copper pipe attaches to. If it is galvanized without a dyelectric union, then that might be a issue. Doubt it though since the poly tubing should serve as a barrier on the poly to poly connection. My guess is very very small leak that is temporarily stopped by the sediment buildup.


Originally Posted By: Jay Moge
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not typical to PB, but it is if you use copper connections that leak. icon_cool.gif


Originally Posted By: bkelly2
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Joe Funderburk wrote:
1st time I've seen this. Is it specific to Polybutylene piping?



No, it is specific to leaky pipe. All pipes eventually leak.


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"I used to be disgusted, Now I try to Be amused"-Elvis Costello

Originally Posted By: ddivito
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I have seen copper fittings corrode like this on ‘all copper’ systems when the crawlspace is very damp. I haven’t seen it in poly fittings, but I wouldn’t be surprised.


Originally Posted By: Jay Moge
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that’s exactly it. the pipe is pb but the fittings are copper. there are no pb anything curroding. physicly imposible. icon_cool.gif