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Topic: Pinhole leak in pex piping...how do I patch it?

Posted By: LoudRam on 05/19/11 04:29pm

As the title says I have a pinhole leak in my water line going to my toilet. It's about an inch or two belew the floor so I can reach it by pulling excess pipe up. How can I patch that? I bought some JB Weld "Kwik Plastic" putty but it says that it won't stick to polyethylene. Any suggestions?


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Posted By: BillArf on 05/19/11 04:38pm

Self bonding silicone tape. There are various brands. Do a Google search for info. Marine stores for one sell it.. "Marine silicone tape"
You can also cut the pipe at the leak and then rejoin with a pex fitting. This is easy to do and preferred repair.






Posted By: SooperDaddy on 05/19/11 04:39pm

PEX Repair


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Posted By: Rick From Sequim on 05/19/11 04:48pm

I'd try a hose clamp over a piece of tubber, like a tire patch or a piece of tube. Slip the rubber over the hole and tighten the hose clamp over the rubber. Works like a charm on pvc as well, no tools required except a screw driver.


Rick
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Posted By: LarryJM on 05/19/11 04:56pm

Rick From Sequim wrote:

I'd try a hose clamp over a piece of tubber, like a tire patch or a piece of tube. Slip the rubber over the hole and tighten the hose clamp over the rubber. Works like a charm on pvc as well, no tools required except a screw driver.


That is what I would use if you can get the hose clamp (use all S/S and note some have just a S/S band and regular screw so use an all S/S) back down thru the hole in the floor. For the rubber you could also use some of the clear vinyl tubing split since it's on the cold water side.

Larry


2001 standard box 7.3L E-350 PSD Van with 4.10 rear and 2007 Holiday Rambler Aluma-Lite 8306S Been RV'ing since 1974.
RAINKAP INSTALL////ETERNABOND INSTALL



Posted By: hershey on 05/19/11 05:02pm

There is a tape available at Lowes that is a fix-all tape. It stretches around the pipe or hose with a hole and bonds to itself. That and a hose clamp to help you sleep better might work unless you have enough room to use a splice made for that job.


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Posted By: LoudRam on 05/19/11 05:05pm

Those are all some great ideas. Thanks. I like having a lot of options.


Posted By: BillArf on 05/19/11 05:10pm

hershey wrote:

There is a tape available at Lowes that is a fix-all tape. It stretches around the pipe or hose with a hole and bonds to itself. That and a hose clamp to help you sleep better might work unless you have enough room to use a splice made for that job.


Self bonding silicone tape. There are various brands. Can be had at Lowes as you mention.

No need for a hose clamp if you use this tape.


Posted By: YC 1 on 05/19/11 05:12pm

fordsooperdooty wrote:

PEX Repair


Ditto:

Get an inline splice for $6 at an rv or plumbing outlet and be done with it. There can be a lot of pressure in that line and chasing a leak will drive you crazy. The inline splices have worked very well for me. If you can put the ends of the hose in hot water they are easier to get on.


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Posted By: LoudRam on 05/20/11 07:10pm

The silicon tape seems to be holding but I might still consider a shark bite repair. The valve or T mod sounds handy. But right now the tape will get me by until I decide what to do. We're not going camping for a couple more weeks. As always thanks again for the advice.


Posted By: InspectorMark on 05/21/11 05:48pm

Another vote for Shark Bits, those things are amazing. Just cut the PEX in half at the hole and and push both ends in to a Shark Bite connector. You will be done in 30 seconds.


Mark Mustola
Linden, Michigan


Posted By: coolbreeze01 on 05/20/11 05:48pm

RedRocket204 wrote:

coolbreeze01 wrote:

Good time to add a valve if you don't have one to the toilet. May come in handy later.


Valve? I would suggest cutting the PEX at the pin hole, adding a T and creating the secondary toilet hose to make it easier to add the 5 gals of water back into the black tank after a dump.


Yes, a shutoff valve. Nice to have when you need to replace the water works on the toilet


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Posted By: RedRocket204 on 05/20/11 07:22pm

coolbreeze01 wrote:

RedRocket204 wrote:

coolbreeze01 wrote:

Good time to add a valve if you don't have one to the toilet. May come in handy later.


Valve? I would suggest cutting the PEX at the pin hole, adding a T and creating the secondary toilet hose to make it easier to add the 5 gals of water back into the black tank after a dump.


Yes, a shutoff valve. Nice to have when you need to replace the water works on the toilet


hehe, my dealer told me that nothing on my RV will ever break...and I believed him right up until he broke his promise, which was about 2 minutes later.

What should have been said in my response was not just add the valve, add the secondary hose as well.


I love me some land yachting


Posted By: Bobbo on 05/20/11 04:03pm

Old-Biscuit wrote:

Either use an in-line splice (PEX connectors available at Home Depot, Lowes etc)

OR

Replace PEX line back to first connector.

Do it right and be done with it..........

This is my vote.


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Posted By: RedRocket204 on 05/20/11 09:02am

coolbreeze01 wrote:

Good time to add a valve if you don't have one to the toilet. May come in handy later.


Valve? I would suggest cutting the PEX at the pin hole, adding a T and creating the secondary toilet hose to make it easier to add the 5 gals of water back into the black tank after a dump.


Posted By: RCMAN46 on 05/19/11 09:45pm

Old-Biscuit wrote:

Either use an in-line splice (PEX connectors available at Home Depot, Lowes etc)

OR

Replace PEX line back to first connector.

Do it right and be done with it..........

X2 all of the other fixes mentioned will not hold as good as the in-line splice. But total replacement of the line is the most reliable but it will require replacement of the connectors at both ends. Most connectors I have seen used in trailers can not be reused and it is very difficult to remove the PEX from them. You usually have to cut them off which results in the PEX being an inch or two shorter.


Posted By: RCMAN46 on 05/19/11 09:48pm

Another thought. What caused the pin hole leak? Be sure to eliminate what ever that was.


Posted By: deltamaster on 05/19/11 09:58pm

slickest1 wrote:

There are connectors out there now called shark bite connectors. They work great and are a permanent fix. You just cut the line and push the pex in and done. Fisrt time I seen them I thought they were cheezy but a plumber buddy of mine swears by them. Other than that replace the line or it will be a pain in the butt.

This i precisely what I would do.

The fittings cost a little more than the mechanical pex connectors but what you save in time and grief is well worth the extra cost.

I used these on a remodel in my rental apartment in Wyoming and have not used anything else since.

The really great thing about the Shark Bite (Lowes sells an identical product by another name) is that if you mess up you can get a little plastic "C" shaped tool and release the fitting and use it again.

These fittings also work great to connect Pex to other types of plumbing such as copper and PVC. You can also use them to connect copper to copper and such.

As mentioned you should (best)repair this by replacing the damaged section of pipe. remove the fittings at both ends and replace both fittings and the pipe between for a worry free repair.

As for the suggestions about tape and clamping on a piece of rubber... I would only suggest them for temporary repair until you can get the job done right.


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Posted By: dalehelman on 05/19/11 11:19pm

I love these things Shark Bite No tools just cut the pex at the leak and push the ends into the coupler. Find them at any Home Depot.


Dale & Sandi
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Posted By: coolbreeze01 on 05/20/11 07:54am

Good time to add a valve if you don't have one to the toilet. May come in handy later.


Posted By: LoudRam on 05/19/11 05:21pm

Home Depot has that silicone tape too. I think I'm going to try that. It says it gives a permanent watertight seal. I rather not have a splice under the floor. That will be a last resort. Thanks again everyone. As usual you guys are a huge help.


Posted By: mobilefleet on 05/19/11 06:02pm

eternabond


Posted By: Chris Bryant on 05/19/11 06:59pm

I'm sorry , but the only real fix is going to be replace the pipe. I wouldn't trust any of the patch fixes.
A leak under the floor- trying a patch that could (and will) leak at least a bit? A splice should be way, way above a patch.


-- Chris Bryant
My RV Service Blog
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Posted By: Old-Biscuit on 05/19/11 07:17pm

Either use an in-line splice (PEX connectors available at Home Depot, Lowes etc)

OR

Replace PEX line back to first connector.

Do it right and be done with it..........


Posted By: slickest1 on 05/19/11 07:42pm

There are connectors out there now called shark bite connectors. They work great and are a permanent fix. You just cut the line and push the pex in and done. Fisrt time I seen them I thought they were cheezy but a plumber buddy of mine swears by them. Other than that replace the line or it will be a pain in the butt.


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Posted By: kakampers on 05/19/11 10:37pm

Rescue Tape...clicky


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