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Old 11-04-2012, 11:45 AM   #1
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Leak every 5 months

I moved into a house almost 2 years ago. Shortly after moving in I noticed a wet spot in the spare bedroom ceiling, right below the master bedroom bathroom. I opened the ceiling up to find the hot and cold water shut off, as well as the drain for the tub/shower. I tried every scenario to try and replicate the leak but with no luck. I have left the ceiling open and every 5 or 6 months there is a massive leak after a shower. I'm talking about a huge puddle of water on the floor, not a slow leak. Since it only happens every 5 months I am never there to see the leak happen, only the aftermath. Again, I try every scenario to try and make it leak but with no luck. I can't tell if the leak is coming from the actual water line (cold water copper line is usually wet after a leak) or from higher up on the tub. Once it happens, it doesn't occur again for a least 5 or 6 months.

Does anyone have any ideas or things I could look for?

The house is almost 40 years old, but the bathroom has been renovated at least 1 time, probably 10 or so years ago.



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Old 11-04-2012, 12:25 PM   #2
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Bad water possibly. Ask your neighbors if they are seeing the same problems.


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Old 11-04-2012, 05:03 PM   #3
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The occasional leak like that is almost always water 'escaping' around a shower curtain or shower door---

If everything checks out in the plumbing and valve /tub over flow--then it's escaping water.

One rare problem---the overflow----with so many tubs used only as showers---the over flow gasket can be a leaker and go unnoticed for ,say 5 months , between the tub actually being used for a bath----

intentionally over fill that tub-----see if the overflow gasket is the culprit.
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Old 11-05-2012, 10:15 AM   #4
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I also though of the tub overflow drain, but have already filled the tub up past it and no signs of the leak. I also tried splashing water all around the tub seal and on the floor outside the tub. Still no signs of the leak.
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Old 11-05-2012, 01:12 PM   #5
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Perhaps the water pressure varies with periodic spikes that result in a leak from one of the valves. Second possibility might be the shower diverter valve.
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