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Old 12-08-2012, 07:23 PM   #16
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Shower stall leaking through ceiling below in kitchen


Try running a hose directly into the trap of the shower drain and let it to see if it leaks

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Old 12-09-2012, 06:45 AM   #17
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Shower stall leaking through ceiling below in kitchen


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Try running a hose directly into the trap of the shower drain and let it to see if it leaks
Plummen, tried that prior to first post for 30 minutes. No dice. The only way I can replicate the leak is (as ol'mike mentioned a post ago) if I point the shower stream at the door itself, and let the water cascade down the door onto the cap of the curb.

At that point, water leaks through to ceiling below - but NOT outside the threshold of the door on the other side of the curb. That's the really odd part.

So I can replicate the leak at will. What I'm doing now is, beyond a shadow of a doubt, eliminating everything else that's not the curb or cap.
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Old 12-09-2012, 06:55 AM   #18
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Shower stall leaking through ceiling below in kitchen


You may end up removing the curb cap and waterproofing the entire top of the curb before reinstalling it.

Caulking in the curb cap may work,but good waterproofing should no rely on caulk alone---
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Old 12-09-2012, 07:03 AM   #19
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Shower stall leaking through ceiling below in kitchen


Cut a 12 x 12 hole in the ceiling(or big enough to see good) and look from underneath. It has been wet up there so you might want to get a fan blowing to prevent any mold growth. Drywall/ceiling repair especially when you still have the cut out piece is not that difficult.
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Old 12-09-2012, 07:14 AM   #20
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Shower stall leaking through ceiling below in kitchen


Thanks mike.

FYI hour 16 of flood test and ceiling is dry. After I remove the ball, I have one more idea.

Shower side of curb directly under cap the grout looks compromised. You can sort of see it in my photos back in the first post. I plan on covering that portion with grout and lip of cap with **drumroll** duct tape! I want to isolate the specific portion of the curb/cap that's leaking.

If the duct tap stops the leak then I finally found the leak's origination point and at that point will have a game plan to fix. Wish me luck.
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Old 12-09-2012, 07:20 AM   #21
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Shower stall leaking through ceiling below in kitchen


Good luck---By the way---grout is not water proof---so silicone caulk would be the minimum---removing the cap and waterproofing with Hydroban (Latacrete) before resetting the cap into a bed of silicone will be a more trustworthy fix---
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Old 12-09-2012, 07:22 AM   #22
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Shower stall leaking through ceiling below in kitchen


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Shower side of curb directly under cap the grout looks compromised. You can sort of see it in my photos back in the first post.
Where???
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Shower stall leaking through ceiling below in kitchen-img_20121206_180101.jpg   Shower stall leaking through ceiling below in kitchen-img_20121206_180122-1.jpg  
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Old 12-09-2012, 07:41 AM   #23
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Shower stall leaking through ceiling below in kitchen


hammerline, through the elimination of all other possibilities, G H and I (actually the entire underside) is where I am now focusing my attention. Every other option (come 3pm today when flood test hits 24 hours) have been thoroughly eliminated.

Even so, it seems highly unlikely even to me. The below picture is what logic is telling me is happening, but it seems far fetched.

Behold my awesome skills in MS Paint.
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Old 12-09-2012, 07:48 AM   #24
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Shower stall leaking through ceiling below in kitchen


not that far fetched....once the water makes it under that cap and begins running below/under..I don't know the technical explanation...but the water leaking below/under will begin to draw in the water from the shower side. Maybe capillary action??
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Old 12-09-2012, 07:54 AM   #25
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Shower stall leaking through ceiling below in kitchen


Not so unlikely----I have seen water roll under the lip of a sill many times---

I found an entire condo complex where the exterior lime stone window sills were allowing water to roll into the interiors of the units---

Solution? Diamond cut a small groove under the sill--then caulk properly---sills are best with a drip groove---but proper caulking and bedding into a waterproof material will also do the job---
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Old 12-09-2012, 08:04 AM   #26
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Shower stall leaking through ceiling below in kitchen


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Solution? Diamond cut a small groove under the sill--then caulk properly---sills are best with a drip groove
My old sills on the brick veneer on the front of my house were rowlock courses of the brick. Had them replaced with one-piece limestone sills. The mason did cut the drip-edge on the underside of the sills. Think he called the cut a reglet.

Now back to mikestorm's issue.
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Old 12-16-2012, 09:06 AM   #27
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Shower stall leaking through ceiling below in kitchen


Sorry for not getting back to this post. Last week I had to cut the flood test short at 19 hours as I needed to leave the home for an extended period of time. Starting again and am at hour 15 of flood test two. No water so far.

I've done some more searching and I have a theory about what (specifically) may be wrong with the curb. If you look at my first set of photos, you'll notice a rust stain in one corner of the cap. I've recently discovered the existence of something called 'dam corners'.

I'm wondering if the lack of dam corners is causing water to wick in/around the curb into the walls and floor. Here are my questions:

1) Does this theory sound plausible?
2) Can dam corners be installed after the fact provided curb is torn down to the membrane or not? They apparently can be cut/folded into the liner, but there's also a standalone product one can buy.
3) Plumbing job or repair job?

Finally, I want to say thanks to everyone who has helped me thus far. I can't tell you how much it's appreciated.
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Old 12-16-2012, 06:52 PM   #28
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Shower stall leaking through ceiling below in kitchen


Well crap. Hour 24.5 I walked into the kitchen and noticed a solitary drip on the ground. Looking up, I saw another starting to form.

The odd thing is when I use the shower, the leak happens in minutes. Why would the flood test take 24 hours?

One thought: There are microfractures in the grout around the curb. When I'm in the shower, water cascades directly into them. With the flood test (water line was directly below) perhaps the water wicked up the grout to the microfractures? Does this sound plausible?

Based on the responses I may hedge my bet. I might bring in the mason/tile guy and have him remove door, remove cap, remove tile around curb, and inspect. If he still thinks it's the NOT a pan leak I'll ask him to waterproof, install dam corners, retile, reset cap, reinstall door. Otherwise, I'll have him stop there and call in the plumber to cut an exploratory hole in the ceiling where the leak is to see if he spots anything.

I'm becoming dismayed this might be a whole new shower stall situation
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Old 12-17-2012, 05:56 AM   #29
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Shower stall leaking through ceiling below in kitchen


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and call in the plumber to cut an exploratory hole in the ceiling where the leak is to see if he spots anything.
why would you need a plumber to cut a hole in the drywall ceiling. You should of done this already yourself. Not that difficult. At least you may be able to see something obvious and then make an informed decision
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Old 12-17-2012, 06:05 AM   #30
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Shower stall leaking through ceiling below in kitchen


You're right of course. Its not like cutting a hole in my ceilings is beyond my skillset. I will do this this evening and post photos. I think I'm psychologically equating the hole to my making things worse. I know my wife will

Thanks for the reality check.

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