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BANGKOK 19 January 2019 19:02
pikao

Tiny leak

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Hi there,

I´m rentig out a house. My tenants are nice and clean and they pay. They are a bit pedantic though. Under the sink in the bathroom (after a failed repair) there stays a tiny leak. Outflow about 10 ml (or less) per day. But there is a leak and they insist (softly) to fix it. It´s about the PVC pipe coming out directly flat from the wall with a male thread (also PVC) to fix the hose to the tap. At the last torque the thread broke at it´s bottom. It was still holding on so I´ve let it dry (not enough obviously) and put some two component glue on. Better, but not. Next I tried several other kinds of stuff but as the water was once under it nothing would stick. Next I would have to  open the wall, which I want to avoid. Years ago in a teleshopping program they advertised a "glue" that was made for wet surfaces (such as a leaking roof during rain).

Don´t know if it worked. Does anyone know if such thing (maybe for boats) is available in TH ? Any other good advice is also appreciated. Thanks

P.S. Long story for a tiny leak, but I wanted to show the situation and the dimesion of the options. A bit of glue or opening a wall

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The best way would be to "open the wall" and replace the broken joint....but you could try some 2 part epoxy putty it will set in the wet but not under pressure so turn the water off for a few hours to allow time for it to dry a bit.

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2 minutes ago, johng said:

The best way would be to "open the wall" and replace the broken joint....but you could try some 2 part epoxy putty it will set in the wet but not under pressure so turn the water off for a few hours to allow time for it to dry a bit.

Yes that should be my approach also. Be sure the tenants are not able to switch on water pump,  Take them out for diner, lunch, breakfast, or best, all three.

 

The best repairs in cases like this is start all over again. But maybe you are lucky.....

 

Arjen.

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I 2nd, 3rd the above.  The problem is that you over-torqued in the first place.  So, don't do that again!  Most threaded joints really do not need much more than finger tighten.  A bit more but not much.

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can you get a close-up clear photo of the problem / fitting coming from the wall, it will help us to devise a good fix-up for you.

 

Possibly you can chip away a bit of the wall to expose the pipe / fitting, then using a 2 part epoxy and female / male PVC fitting  - after fitting the new fitting apply a good amount of epoxy into the hole and around the pipe fitting. 

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2 hours ago, Lacessit said:

There's a saying about leaks. They never get better.

I disagree.

 

Many small leaks actually right themselves relatively quickly, with impurities coming via a water main or crap that ended up down the waste pipe.

 

I have had a cup under the sink for a leak on the water main but i was very wary to overtighten an already twisted flexi. After 6months the problem disappeared.

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You might try aqua putty two part adhesive that is available from home pro.  it can be wised under water and i used it to repair a couple of small leaks when i built my house 20 years ago intending to go back and fix them right later.  here it is 20 years later, i haven't repaired the leaks  and they still do not leak,  my motto "don't fix something that is not broken".  I've actually used it to repair a small hole in a biG plastic bucket and it still holds water.

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Assuming theres some good PVC thread poking out of the wall, try this:-

  • Get an iron (not PVC) female - female and an iron male - male fitting (or better a stop tap) fitting of the correct size.
  • Apply LOTS of PTFE tape to the PVC coming out of the wall.
  • Put the female fitting on.
  • The thread is much longer than the flexy nut and should seal nicely on the remaining good PVC.
  • Screw the stop-tap into the other end of the fitting (use enough PTFE).
  • Re-fit the flexy (check the rubber washer).

Job done.

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First of all.....Thank´s a lot to everybody

19 hours ago, faraday said:

You tried the ptfe plumbers tape? 

I did, but it doesn´t work on the wall as the pipe comes out too flat (even)

19 hours ago, johng said:

The best way would be to "open the wall" and replace the broken joint....but you could try some 2 part epoxy putty it will set in the wet but not under pressure so turn the water off for a few hours to allow time for it to dry a bit.

Agree with the first point, but it would be a bigger job + very inconvenient to work (difficult access)

Tried the putty (which I called "glue", sorry), without pressure, but it worked out only 99%

19 hours ago, Arjen said:

The best repairs in cases like this is start all over again. But maybe you are lucky.....

Agree to both (hoping)

 

18 hours ago, bankruatsteve said:

The problem is that you over-torqued in the first place.

Yes. And I know about the sensibility of PVC pipes. Problem was that it´s a combination of several connections and it should be horizontal. Last 5mm were...just..too much

 

18 hours ago, Artisi said:

can you get a close-up clear photo of the problem / fitting coming from the wall, it will help us to devise a good fix-up for you.

Can´t do that now, and you would only see the "mess" that it is at present (putty, tape, glue..)

 

18 hours ago, Artisi said:

Possibly you can chip away a bit of the wall to expose the pipe / fitting, then using a 2 part epoxy and female / male PVC fitting  - after fitting the new fitting apply a good amount of epoxy into the hole and around the pipe fitting.

Probably the next step if I´m not lucky, referring to eyecatchers post

 

16 hours ago, eyecatcher said:

Many small leaks actually right themselves relatively quickly, with impurities coming via a water main or crap that ended up down the waste pipe.

That´s what I´m hoping for

 

9 hours ago, wayned said:

You might try aqua putty two part adhesive that is available from home pro.

I definately will

 

8 hours ago, Crossy said:

Assuming theres some good PVC thread poking out of the wall,

Unfortunately not. It´s that part that broke.

 

8 hours ago, Crossy said:
  • Get an iron (not PVC) female - female and an iron male - male fitting (or better a stop tap) fitting of the correct size.
  • Apply LOTS of PTFE tape to the PVC coming out of the wall.
  • Put the female fitting on.
  • The thread is much longer than the flexy nut and should seal nicely on the remaining good PVC.
  • Screw the stop-tap into the other end of the fitting (use enough PTFE).
  • Re-fit the flexy (check the rubber washer).

This could come in play in another occasion. Very good advice. Thanks

 

2 hours ago, CGW said:

If you can get it liquid PTFE would work

Will try

 

Again...thank you all

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4 minutes ago, edgarfriendly said:

SUGRU

What is it or what does it mean ?

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