hardware for copper pipe strap


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Old 01-22-16, 12:20 PM
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hardware for copper pipe strap

I am going to replace some copper pipe hangers under the house, and, since it's just preventative maintenance for the most part, wonder about the current conventional wisdom regarding the hardware for straps. The original ones appear to all be held to the joists with roofing nails and bolted together with plain steel bolts, and most look in pretty good shape after 40 some years, but may as well do it right. I assume copper or brass nails or screws to attach it to the joists and brass cap screws and nuts for bolting it back to itself, but haven't made a trip to the hardware store yet to see how available everything is.
 
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Old 01-22-16, 02:10 PM
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I wouldn't replace them, I would add to what's there, if you think it's needed. Removing the existing hangers could lead to problems. These days, I would look for plastic since the weather won't bother it. I wouldn't be swinging a hammer under there either. A screw gun with exterior screws sounds better as long as you don't send a screw through a pipe.
 
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Old 01-22-16, 03:32 PM
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Thank you, Pulpo, and I wouldn't replace any of them either, except that I found a few that were slack, maybe due to never having been tight and I didn't notice it before, and a few where the bolts and/or nails look suspect, so will just go in and add a new one alongside of those. The main thing that I have going on is a tee where one of the bathrooms and a stack tie in that has settled just enough to crack the solder where the pipes connect on both sides tie into of it, right at the bottom of each joint. I'm hoping to carefully raise the tee just a bit, looks like about 1/8" will do it, and see if I can solder the bottoms of the joints back up. If I can, then I will go ahead and replace or add support on the whole system as needed. If it doesn't work, my questions are mute, because I will just go ahead and replace the whole thing with PVC. Thank you again.
 
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Old 01-22-16, 04:59 PM
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PVC should never be used to supply lines!
In your area I'd only concider using PEX to replace copper plumbing.
Trying to resolder without pulling it all apart, cleaning and resoldering is just not going to happen without causing leaks.
 
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Old 01-22-16, 05:24 PM
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I'm hoping to carefully raise the tee just a bit, looks like about 1/8" will do it, and see if I can solder the bottoms of the joints back up.
Doubtful..... I never had much luck in reheating an old fitting and having it seal properly.

I use these plastic hooks. They work great. They snap onto the pipe and you can replace the supplied nail with a screw. A simple one-handed installation.

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Old 01-23-16, 02:25 AM
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These are the 3" waste lines, Joe. I'm aware that it generally makes sense to replace them with PVC, but I've tapped all along them, and everything seems in good shape with the exception of these two joints where the problem is related to the tee having settled a bit, not rot. In retrospect, it looks like it could have been avoided by even one more well placed strap near the tee, but that was about 40 years ago, so irrelevant now. PJ, I do know it's doubtful, but figured that the only thing it's going to cost me to try is a couple hours, if that, so seems worth a shot. If it doesn't work, well, I of course can't just slip Fernco's on the 3" tee, so it's going to turn into a bit more of a job.
 
 

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