Cement Contact With Copper Pipe

 
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Old 04-12-2007, 11:29 AM   #1
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Cement Contact With Copper Pipe


I have a water main coming through a poured concrete foundation. THe copper pipe main is encased in a black plastic sleeve. When it rains water comes in through this sleeve.

Can I fill the end of the sleeve with hydraulic water stop cement? I'm hearing conflicting info on whether the cement will hurt the copper pipe inside.
Feedback appreciated. Thanks
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Old 04-12-2007, 12:29 PM   #2
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Re: Cement Contact With Copper Pipe


why do you have to use a cementious filler??

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Old 04-12-2007, 03:39 PM   #3
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Re: Cement Contact With Copper Pipe


Quote:
Originally Posted by Capt2 View Post
I have a water main coming through a poured concrete foundation. THe copper pipe main is encased in a black plastic sleeve. When it rains water comes in through this sleeve.

Can I fill the end of the sleeve with hydraulic water stop cement? I'm hearing conflicting info on whether the cement will hurt the copper pipe inside.
Feedback appreciated. Thanks
Why not use expanding spray-foam, or some kind of silicone sealant (like 3M 5200)?
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Old 04-12-2007, 05:40 PM   #4
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Re: Cement Contact With Copper Pipe


I would be glad to use what works best.
Have you used spray foam before to hold back water?
Silicone was tried --not a complete success.
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Old 04-12-2007, 06:04 PM   #5
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Re: Cement Contact With Copper Pipe


5200 is a polyurethane sealant/adhesive and should stop all leakage. We primarily use it for sealing thru-hulls and other hull penetrations below the water line on boats. Got to get rid of all of the sillycone before it will work.

Look here http://www3.3m.com/catalog/us/en001/...er/output_html
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Old 04-12-2007, 07:22 PM   #6
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Re: Cement Contact With Copper Pipe


Did you try to see if the grade was correct around the slab. Also a major factor is downspouts from gutters sometimes they are way to close to the house, if thats the case get the down spout extenders. look into checking that out first to try to prevent the problem rather than fix it like that.

Just thought I would help out.
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Old 04-12-2007, 08:04 PM   #7
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Re: Cement Contact With Copper Pipe


Get some of that electrical shrink wrap, that will keep the water out.
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Old 04-12-2007, 08:07 PM   #8
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Re: Cement Contact With Copper Pipe


Ron, I assume that you are speaking of self-vulcanizing tape. How will that bond to concrete? It bonds to itself.
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Old 04-12-2007, 08:22 PM   #9
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Re: Cement Contact With Copper Pipe


It was a thought, and only a thought, for I don't know what it there, a picture would be helpful.
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Old 04-12-2007, 10:48 PM   #10
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Re: Cement Contact With Copper Pipe


I used marine grade epoxy putty. I'll see the result next time it rains.
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Old 04-12-2007, 11:22 PM   #11
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Re: Cement Contact With Copper Pipe


How about a foam backer, then cover it with silicone again.
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Old 04-17-2007, 09:05 PM   #12
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Re: Cement Contact With Copper Pipe


OK so we had heavy rain in NJ and I had used the marine epoxy putty before it started. Basically it held temporarily then started to leak. Just out of curiosity I applied this rubbery gutter sealant that can be applied when wet and bingo, it worked no more leak.

Now if I can just get the other little foundation leaks stopped.
What is the trick to using hydraulic cement??? Can it be applied while the leak is active? I did this and the leak wiggled its way to the edge of the cement.
Feedback appreciated.

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